Drop chunks from materialized hypertables #1666

gayyappan · 2020-01-30T20:31:48Z

Add support for dropping chunks from materialized
hypertables. drop_chunks_policy can now be set up
for materialized hypertables.
Fixes #1639

Note to Reviewers:
This PR supports:
A. add_drop_chunks_policy( '<schema_name>.<view_name>' , ... )
cannot pass in materialized hypertable name directly here.
Policies are added by specifying the cont. aggregate view name.
If the cont. aggregate is based on "integer-type" time table, then the integer_now function is inherited by the cont. aggregate as well.
B. drop_chunks support for materialized hypertables.

drop_chunks( 'schema_name', 'view_name' , ... ) supported
drop_chunks ('_timescaledb_internal', ' materialized_hypertable_name', ... ) is supported.
drop_chunks( older_than => ..)
The table_name/view_name is not specifically passed in.
This variant errors out if any materialization hypertable satisfies the criterion for older_than.
(see continuous_aggs_ddl.sql.in for the variants )

If the schema_name is not passed in, the "search_path" is used to determine the schemas that will be searched for tables matching the criterion.

svenklemm

please add to CHANGELOG.md

erimatnor

I am approving, but I am not convinced that this is the right approach. Still, I assume this can be refined later.

src/chunk.c

erimatnor · 2020-02-03T08:27:37Z

src/chunk.c

@@ -2413,9 +2419,18 @@ ts_chunk_do_drop_chunks(Oid table_relid, Datum older_than_datum, Datum newer_tha
 	switch (ts_continuous_agg_hypertable_status(hypertable_id))
 	{
 		case HypertableIsMaterialization:
+			if (user_supplied_table_name == false)
+			{
+				elog(ERROR, "cannot drop_chunks on a continuous aggregate materialization table");


Suggested change

elog(ERROR, "cannot drop_chunks on a continuous aggregate materialization table");

elog(ERROR, "cannot drop chunks on a continuous aggregate materialization table");

erimatnor · 2020-02-03T08:27:46Z

src/chunk.c

-			pg_unreachable();
+			if (user_supplied_table_name == false)
+			{
+				elog(ERROR, "cannot drop_chunks on a continuous aggregate materialization table");


Suggested change

elog(ERROR, "cannot drop_chunks on a continuous aggregate materialization table");

elog(ERROR, "cannot drop chunks on a continuous aggregate materialization table");

src/chunk.c

codecov · 2020-02-07T20:28:44Z

Codecov Report

Merging #1666 into master will increase coverage by 0.36%.
The diff coverage is 95.86%.

@@            Coverage Diff             @@
##           master    #1666      +/-   ##
==========================================
+ Coverage   91.52%   91.88%   +0.36%     
==========================================
  Files         144      142       -2     
  Lines       21874    21034     -840     
==========================================
- Hits        20020    19327     -693     
+ Misses       1854     1707     -147

Flag	Coverage Δ
#cron	`?`
#pr	`91.88% <95.86%> (+0.01%)`	⬆️

Impacted Files	Coverage Δ
src/cross_module_fn.c	`68.54% <ø> (ø)`	⬆️
src/chunk.h	`100% <ø> (ø)`	⬆️
src/interval.c	`85.06% <100%> (+0.68%)`	⬆️
tsl/src/bgw_policy/drop_chunks_api.c	`98.73% <100%> (+0.65%)`	⬆️
tsl/src/continuous_aggs/drop.c	`88.88% <100%> (-1.74%)`	⬇️
src/hypertable.c	`89.6% <100%> (+0.67%)`	⬆️
src/chunk.c	`95.57% <82.35%> (-0.34%)`	⬇️
tsl/src/bgw_policy/job.c	`89.53% <90%> (+1.23%)`	⬆️
src/continuous_agg.c	`97.58% <97.87%> (+0.24%)`	⬆️
src/plan_add_hashagg.c	`41.66% <0%> (-46.67%)`	⬇️
... and 85 more

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erimatnor

Mostly nits.

I suggest leaving the question of API changes (not allowing wildcards) for later since this is a breaking API change.

src/chunk.c

erimatnor · 2020-02-11T09:25:09Z

src/chunk.c

+			if (ca == NULL)
+				ereport(ERROR,
+						(errcode(ERRCODE_TS_HYPERTABLE_NOT_EXIST),
+						 errmsg("hypertable \"%s\" does not exist", NameStr(*table_name))));


I guess this error is a bit confusing in case one passed in the view name. I suggest updating the error to say something like: errmsg("%s is not a hypertable or continuous aggregate view") errhint("It is only possible to drop chunks on a user-created hypertable or continuous aggregate view.")

erimatnor · 2020-02-11T09:27:11Z

src/chunk.c

 	ht_oids = ts_hypertable_get_all_by_name(schema_name, table_name, CurrentMemoryContext);

 	if (table_name != NULL)
 	{
+		ContinuousAgg *ca = NULL;


Move declaration inside the local context where it is used.

erimatnor · 2020-02-11T09:28:45Z

src/continuous_agg.c

@@ -783,3 +783,51 @@ ts_continuous_agg_get_user_view_oid(ContinuousAgg *agg)
 		elog(ERROR, "could not find user view for continuous agg");
 	return view_relid;
 }
+static int32


Add newline

src/continuous_agg.c

erimatnor · 2020-02-11T09:46:44Z

tsl/src/bgw_policy/drop_chunks_api.c

+		{
+			ereport(ERROR,
+					(errcode(ERRCODE_FEATURE_NOT_SUPPORTED),
+					 errmsg("cannot add drop chunks policy to materialized hypertables \"%s\" ",


Suggested change

errmsg("cannot add drop chunks policy to materialized hypertables \"%s\" ",

errmsg("cannot add drop chunks policy to materialized hypertable \"%s\" ",

erimatnor · 2020-02-11T09:48:06Z

tsl/src/bgw_policy/drop_chunks_api.c

+		open_dim = hyperspace_get_open_dimension(meta->ht->space, 0);
+		partitioning_type = ts_dimension_get_partition_type(open_dim);
+		if (IS_INTEGER_TYPE(partitioning_type))
+		{


elide braces

erimatnor · 2020-02-11T09:48:51Z

tsl/src/bgw_policy/job.c

+
+		open_dim = ts_continous_agg_find_integer_now_func_by_materialization_id(mat_id);
+		if (open_dim == NULL)
+		{


elide braces

tsl/test/expected/continuous_aggs_bgw_drop_chunks.out

erimatnor · 2020-02-11T09:55:37Z

tsl/test/expected/continuous_aggs_ddl-10.out

@@ -1048,3 +1045,36 @@ ORDER BY ranges;
 _timescaledb_internal._hyper_13_22_chunk | {"[20,40)"}
 (1 row)

+-- TEST drop chunks from continuous aggregates by specifying view name
+SELECT drop_chunks(
+    table_name => 'drop_chunks_view',


Same here as above. What is the behavior of cascade_to_materializations = true when drop_chunks is called on the view?

Do we need to test?

there are no dependencies on this view/materialized hypertable. But I will add a contrived case and test. This would help when we extend functionality to create views based on existing views (like 1 day view based on 1 hour view).

Update: contrived case doesn't work as we disable cont. aggregates based on existing cont. aggregates.

erimatnor

Approving, but suggest applying the fixes to the error messages to make them more human readable and consistent.

svenklemm · 2020-02-13T22:07:20Z

src/chunk.c

+	{
+		/* default schema is public */
+		schema_name = (NameData *) palloc0(NAMEDATALEN);
+		namestrcpy(schema_name, "public");


the schema shouldnt be hardcoded like that and you should call current_schema to get default schema instead

The behavior described in the docs is that we will only look for "public" schema if it is not specified explicitly. We were missing this check earlier.

svenklemm

i think you shouldnt hardcode the default schema to "public"

pmwkaa

Looks good, just a couple of non-important minors

pmwkaa · 2020-02-17T12:41:55Z

src/chunk.c

@@ -2413,9 +2416,18 @@ ts_chunk_do_drop_chunks(Oid table_relid, Datum older_than_datum, Datum newer_tha
 	switch (ts_continuous_agg_hypertable_status(hypertable_id))
 	{
 		case HypertableIsMaterialization:
+			if (user_supplied_table_name == false)


Just nit, I guess those two cases can be combined together to avoid having error message duplication, like this:

case HypertableIsMaterialization: case HypertableIsMaterializationAndRaw: if (user_supplied_table_name == false) elog(ERROR, "cannot drop chunks on a continuous aggregate materialization table"); has_continuous_aggs = (status == HypertableIsMaterializationAndRaw); break;

pmwkaa · 2020-02-17T12:47:21Z

src/continuous_agg.c

+		htid = form->raw_hypertable_id;
+		count++;
+	}
+	Assert(count <= 1);


Maybe just do Assert(htid == INVALID_HYPERTABLE_ID) instead of count when assigning htid. In case if Assert is disabled, we might get compiler warning saying that count is set but not used.

pmwkaa · 2020-02-17T12:54:32Z

src/chunk.c

+			ContinuousAgg *ca = NULL;
+			ca = ts_continuous_agg_find_by_view_name(NameStr(*schema_name), NameStr(*table_name));
+			if (ca == NULL)
+				ereport(ERROR,


Just noticed that sometimes we are using elog(ERROR) and sometimes ereport(ERROR) here, maybe we should stick to one of them, unless there is a good reason for it

pmwkaa · 2020-02-17T12:58:53Z

src/interval.c

-			res = DatumGetInt64(now) - interval;
-			if (res > DatumGetInt64(now))
+		{
+			bool overflow = pg_sub_s64_overflow(DatumGetInt64(now), interval, &res);


Do we still need to put blank line after a variable definition?

pmwkaa · 2020-02-17T13:17:00Z

tsl/src/bgw_policy/drop_chunks_api.c

-											older_than_type,
-											"older_than",
-											"add_drop_chunks_policy");
+	hcache = ts_hypertable_cache_pin();


Do we need to unpin the cache after usage in this function?

not needed as cache gets unpinned automatically at end of txn.

Seems to be released already.

Generally, though, probably good practice to have explicit unpins/releases to avoid holding on to memory longer than necessary.

svenklemm · 2020-02-24T11:50:29Z

Can you add a test where a hypertable with the same name exists in schema a and schema b which are both in search path

Add support for dropping chunks from materialized hypertables. drop_chunks_policy can now be set up for materialized hypertables.

@RJPhillips01

This maintenance release contains bugfixes since the 1.6.0 release. We deem it medium priority for upgrading. In particular the fixes contained in this maintenance release address bugs in continuous aggregates, time_bucket_gapfill, partial index handling and drop_chunks. **Major Features** **Minor Features** * timescale#1666 Support drop_chunks API for continuous aggregates * timescale#1711 Change log level for continuous aggregate materialization messages **Bugfixes** * timescale#1630 Print notice for COPY TO on hypertable * timescale#1648 Drop chunks from materialized hypertable * timescale#1668 Cannot add dimension if hypertable has empty chunks * timescale#1673 Fix crash when interrupting create_hypertable * timescale#1674 Fix time_bucket_gapfill's interaction with GROUP BY * timescale#1686 Fix order by queries on compressed hypertables that have char segment by column * timescale#1687 Fix issue with disabling compression when foreign keys are present * timescale#1688 Handle many BGW jobs better * timescale#1698 Add logic to ignore dropped chunks in hypertable_relation_size * timescale#1704 Fix bad plan for continuous aggregate materialization * timescale#1709 Prevent starting background workers with NOLOGIN * timescale#1713 Fix miscellaneous background worker issues * timescale#1715 Fix issue with overly aggressive chunk exclusion in outer joins * timescale#1719 Fix restoring/scheduler entrypoint to avoid BGW death * timescale#1720 Add scheduler cache invalidations * timescale#1727 Fix compressing INTERVAL columns * timescale#1728 Handle Sort nodes in ConstraintAwareAppend * timescale#1730 Fix partial index handling hypertables * timescale#1739 Use release OpenSSL DLLs for debug builds on Windows * timescale#1740 Fix invalidation entries from multiple caggs on same hypertable * timescale#1743 Fix continuous aggregate materialization timezone handling * timescale#1748 Fix remove_drop_chunks_policy for continuous aggregates **Thanks** * @RJPhillips01 for reporting an issue with drop chunks. * @b4eEX for reporting an issue with disabling compression. * @dark048 for reporting an issue with order by on compressed hypertables * @mrechte for reporting an issue with compressing INTERVAL columns * @tstaehli for reporting an issue with ConstraintAwareAppend * @chadshowalter for reporting an issue with partial index on hypertables * @geoffreybennett for reporting an issue with create_hypertable when interrupting operations * @alxndrdude for reporting an issue with background workers during restore * @zcavaliero for reporting and fixing an issue with dropped columns in hypertable_relation_size * @ismailakpolat for reporting an issue with cagg materialization on hypertables with TIMESTAMP column

@RJPhillips01

This maintenance release contains bugfixes since the 1.6.0 release. We deem it medium priority for upgrading. In particular the fixes contained in this maintenance release address bugs in continuous aggregates, time_bucket_gapfill, partial index handling and drop_chunks. **Major Features** **Minor Features** * timescale#1666 Support drop_chunks API for continuous aggregates * timescale#1711 Change log level for continuous aggregate materialization messages **Bugfixes** * timescale#1630 Print notice for COPY TO on hypertable * timescale#1648 Drop chunks from materialized hypertable * timescale#1668 Cannot add dimension if hypertable has empty chunks * timescale#1673 Fix crash when interrupting create_hypertable * timescale#1674 Fix time_bucket_gapfill's interaction with GROUP BY * timescale#1686 Fix order by queries on compressed hypertables that have char segment by column * timescale#1687 Fix issue with disabling compression when foreign keys are present * timescale#1688 Handle many BGW jobs better * timescale#1698 Add logic to ignore dropped chunks in hypertable_relation_size * timescale#1704 Fix bad plan for continuous aggregate materialization * timescale#1709 Prevent starting background workers with NOLOGIN * timescale#1713 Fix miscellaneous background worker issues * timescale#1715 Fix issue with overly aggressive chunk exclusion in outer joins * timescale#1719 Fix restoring/scheduler entrypoint to avoid BGW death * timescale#1720 Add scheduler cache invalidations * timescale#1727 Fix compressing INTERVAL columns * timescale#1728 Handle Sort nodes in ConstraintAwareAppend * timescale#1730 Fix partial index handling on hypertables * timescale#1739 Use release OpenSSL DLLs for debug builds on Windows * timescale#1740 Fix invalidation entries from multiple caggs on same hypertable * timescale#1743 Fix continuous aggregate materialization timezone handling * timescale#1748 Fix remove_drop_chunks_policy for continuous aggregates **Thanks** * @RJPhillips01 for reporting an issue with drop chunks. * @b4eEX for reporting an issue with disabling compression. * @dark048 for reporting an issue with order by on compressed hypertables * @mrechte for reporting an issue with compressing INTERVAL columns * @tstaehli for reporting an issue with ConstraintAwareAppend * @chadshowalter for reporting an issue with partial index on hypertables * @geoffreybennett for reporting an issue with create_hypertable when interrupting operations * @alxndrdude for reporting an issue with background workers during restore * @zcavaliero for reporting and fixing an issue with dropped columns in hypertable_relation_size * @ismailakpolat for reporting an issue with cagg materialization on hypertables with TIMESTAMP column

@RJPhillips01

This maintenance release contains bugfixes since the 1.6.0 release. We deem it medium priority for upgrading. In particular the fixes contained in this maintenance release address bugs in continuous aggregates, time_bucket_gapfill, partial index handling and drop_chunks. **Major Features** **Minor Features** * timescale#1666 Support drop_chunks API for continuous aggregates * timescale#1711 Change log level for continuous aggregate materialization messages **Bugfixes** * timescale#1630 Print notice for COPY TO on hypertable * timescale#1648 Drop chunks from materialized hypertable * timescale#1668 Cannot add dimension if hypertable has empty chunks * timescale#1673 Fix crash when interrupting create_hypertable * timescale#1674 Fix time_bucket_gapfill's interaction with GROUP BY * timescale#1686 Fix order by queries on compressed hypertables that have char segment by column * timescale#1687 Fix issue with disabling compression when foreign keys are present * timescale#1688 Handle many BGW jobs better * timescale#1698 Add logic to ignore dropped chunks in hypertable_relation_size * timescale#1704 Fix bad plan for continuous aggregate materialization * timescale#1709 Prevent starting background workers with NOLOGIN * timescale#1713 Fix miscellaneous background worker issues * timescale#1715 Fix issue with overly aggressive chunk exclusion in outer joins * timescale#1719 Fix restoring/scheduler entrypoint to avoid BGW death * timescale#1720 Add scheduler cache invalidations * timescale#1727 Fix compressing INTERVAL columns * timescale#1728 Handle Sort nodes in ConstraintAwareAppend * timescale#1730 Fix partial index handling on hypertables * timescale#1739 Use release OpenSSL DLLs for debug builds on Windows * timescale#1740 Fix invalidation entries from multiple caggs on same hypertable * timescale#1743 Fix continuous aggregate materialization timezone handling * timescale#1748 Fix remove_drop_chunks_policy for continuous aggregates **Thanks** * @RJPhillips01 for reporting an issue with drop chunks. * @b4eEX for reporting an issue with disabling compression. * @darko408 for reporting an issue with order by on compressed hypertables * @mrechte for reporting an issue with compressing INTERVAL columns * @tstaehli for reporting an issue with ConstraintAwareAppend * @chadshowalter for reporting an issue with partial index on hypertables * @geoffreybennett for reporting an issue with create_hypertable when interrupting operations * @alxndrdude for reporting an issue with background workers during restore * @zcavaliero for reporting and fixing an issue with dropped columns in hypertable_relation_size * @ismailakpolat for reporting an issue with cagg materialization on hypertables with TIMESTAMP column

@RJPhillips01

This maintenance release contains bugfixes since the 1.6.0 release. We deem it medium priority for upgrading. In particular the fixes contained in this maintenance release address bugs in continuous aggregates, time_bucket_gapfill, partial index handling and drop_chunks. **Major Features** **Minor Features** * timescale#1666 Support drop_chunks API for continuous aggregates * timescale#1711 Change log level for continuous aggregate materialization messages **Bugfixes** * timescale#1630 Print notice for COPY TO on hypertable * timescale#1648 Drop chunks from materialized hypertable * timescale#1668 Cannot add dimension if hypertable has empty chunks * timescale#1673 Fix crash when interrupting create_hypertable * timescale#1674 Fix time_bucket_gapfill's interaction with GROUP BY * timescale#1686 Fix order by queries on compressed hypertables that have char segment by column * timescale#1687 Fix issue with disabling compression when foreign keys are present * timescale#1688 Handle many BGW jobs better * timescale#1698 Add logic to ignore dropped chunks in hypertable_relation_size * timescale#1704 Fix bad plan for continuous aggregate materialization * timescale#1709 Prevent starting background workers with NOLOGIN * timescale#1713 Fix miscellaneous background worker issues * timescale#1715 Fix issue with overly aggressive chunk exclusion in outer joins * timescale#1719 Fix restoring/scheduler entrypoint to avoid BGW death * timescale#1720 Add scheduler cache invalidations * timescale#1727 Fix compressing INTERVAL columns * timescale#1728 Handle Sort nodes in ConstraintAwareAppend * timescale#1730 Fix partial index handling on hypertables * timescale#1739 Use release OpenSSL DLLs for debug builds on Windows * timescale#1740 Fix invalidation entries from multiple caggs on same hypertable * timescale#1743 Fix continuous aggregate materialization timezone handling * timescale#1748 Fix remove_drop_chunks_policy for continuous aggregates **Thanks** * @RJPhillips01 for reporting an issue with drop chunks. * @b4eEX for reporting an issue with disabling compression. * @darko408 for reporting an issue with order by on compressed hypertables * @mrechte for reporting an issue with compressing INTERVAL columns * @tstaehli for reporting an issue with ConstraintAwareAppend * @chadshowalter for reporting an issue with partial index on hypertables * @geoffreybennett for reporting an issue with create_hypertable when interrupting operations * @alxndrdude for reporting an issue with background workers during restore * @zcavaliero for reporting and fixing an issue with dropped columns in hypertable_relation_size * @ismailakpolat for reporting an issue with cagg materialization on hypertables with TIMESTAMP column

@RJPhillips01

This maintenance release contains bugfixes since the 1.6.0 release. We deem it medium priority for upgrading. In particular the fixes contained in this maintenance release address bugs in continuous aggregates, time_bucket_gapfill, partial index handling and drop_chunks. **Major Features** **Minor Features** * timescale#1666 Support drop_chunks API for continuous aggregates * timescale#1711 Change log level for continuous aggregate materialization messages **Bugfixes** * timescale#1630 Print notice for COPY TO on hypertable * timescale#1648 Drop chunks from materialized hypertable * timescale#1668 Cannot add dimension if hypertable has empty chunks * timescale#1673 Fix crash when interrupting create_hypertable * timescale#1674 Fix time_bucket_gapfill's interaction with GROUP BY * timescale#1686 Fix order by queries on compressed hypertables that have char segment by column * timescale#1687 Fix issue with disabling compression when foreign keys are present * timescale#1688 Handle many BGW jobs better * timescale#1698 Add logic to ignore dropped chunks in hypertable_relation_size * timescale#1704 Fix bad plan for continuous aggregate materialization * timescale#1709 Prevent starting background workers with NOLOGIN * timescale#1713 Fix miscellaneous background worker issues * timescale#1715 Fix issue with overly aggressive chunk exclusion in outer joins * timescale#1719 Fix restoring/scheduler entrypoint to avoid BGW death * timescale#1720 Add scheduler cache invalidations * timescale#1727 Fix compressing INTERVAL columns * timescale#1728 Handle Sort nodes in ConstraintAwareAppend * timescale#1730 Fix partial index handling on hypertables * timescale#1739 Use release OpenSSL DLLs for debug builds on Windows * timescale#1740 Fix invalidation entries from multiple caggs on same hypertable * timescale#1743 Fix continuous aggregate materialization timezone handling * timescale#1748 Fix remove_drop_chunks_policy for continuous aggregates **Thanks** * @RJPhillips01 for reporting an issue with drop chunks. * @b4eEX for reporting an issue with disabling compression. * @darko408 for reporting an issue with order by on compressed hypertables * @mrechte for reporting an issue with compressing INTERVAL columns * @tstaehli for reporting an issue with ConstraintAwareAppend * @chadshowalter for reporting an issue with partial index on hypertables * @geoffreybennett for reporting an issue with create_hypertable when interrupting operations * @alxndrdude for reporting an issue with background workers during restore * @zcavaliero for reporting and fixing an issue with dropped columns in hypertable_relation_size * @ismailakpolat for reporting an issue with cagg materialization on hypertables with TIMESTAMP column

@RJPhillips01

This maintenance release contains bugfixes since the 1.6.0 release. We deem it medium priority for upgrading. In particular the fixes contained in this maintenance release address bugs in continuous aggregates, time_bucket_gapfill, partial index handling and drop_chunks. **Major Features** **Minor Features** * timescale#1666 Support drop_chunks API for continuous aggregates * timescale#1711 Change log level for continuous aggregate materialization messages **Bugfixes** * timescale#1630 Print notice for COPY TO on hypertable * timescale#1648 Drop chunks from materialized hypertable * timescale#1668 Cannot add dimension if hypertable has empty chunks * timescale#1673 Fix crash when interrupting create_hypertable * timescale#1674 Fix time_bucket_gapfill's interaction with GROUP BY * timescale#1686 Fix order by queries on compressed hypertables that have char segment by column * timescale#1687 Fix issue with disabling compression when foreign keys are present * timescale#1688 Handle many BGW jobs better * timescale#1698 Add logic to ignore dropped chunks in hypertable_relation_size * timescale#1704 Fix bad plan for continuous aggregate materialization * timescale#1709 Prevent starting background workers with NOLOGIN * timescale#1713 Fix miscellaneous background worker issues * timescale#1715 Fix issue with overly aggressive chunk exclusion in outer joins * timescale#1719 Fix restoring/scheduler entrypoint to avoid BGW death * timescale#1720 Add scheduler cache invalidations * timescale#1727 Fix compressing INTERVAL columns * timescale#1728 Handle Sort nodes in ConstraintAwareAppend * timescale#1730 Fix partial index handling on hypertables * timescale#1739 Use release OpenSSL DLLs for debug builds on Windows * timescale#1740 Fix invalidation entries from multiple caggs on same hypertable * timescale#1743 Fix continuous aggregate materialization timezone handling * timescale#1748 Fix remove_drop_chunks_policy for continuous aggregates **Thanks** * @RJPhillips01 for reporting an issue with drop chunks. * @b4eEX for reporting an issue with disabling compression. * @darko408 for reporting an issue with order by on compressed hypertables * @mrechte for reporting an issue with compressing INTERVAL columns * @tstaehli for reporting an issue with ConstraintAwareAppend * @chadshowalter for reporting an issue with partial index on hypertables * @geoffreybennett for reporting an issue with create_hypertable when interrupting operations * @alxndrdude for reporting an issue with background workers during restore * @zcavaliero for reporting and fixing an issue with dropped columns in hypertable_relation_size * @ismailakpolat for reporting an issue with cagg materialization on hypertables with TIMESTAMP column

@RJPhillips01

This maintenance release contains bugfixes since the 1.6.0 release. We deem it medium priority for upgrading. In particular the fixes contained in this maintenance release address bugs in continuous aggregates, time_bucket_gapfill, partial index handling and drop_chunks. **For this release only**, you will need to restart the database before running `ALTER EXTENSION` **Minor Features** * timescale#1666 Support drop_chunks API for continuous aggregates * timescale#1711 Change log level for continuous aggregate materialization messages **Bugfixes** * timescale#1630 Print notice for COPY TO on hypertable * timescale#1648 Drop chunks from materialized hypertable * timescale#1668 Cannot add dimension if hypertable has empty chunks * timescale#1673 Fix crash when interrupting create_hypertable * timescale#1674 Fix time_bucket_gapfill's interaction with GROUP BY * timescale#1686 Fix order by queries on compressed hypertables that have char segment by column * timescale#1687 Fix issue with disabling compression when foreign keys are present * timescale#1688 Handle many BGW jobs better * timescale#1698 Add logic to ignore dropped chunks in hypertable_relation_size * timescale#1704 Fix bad plan for continuous aggregate materialization * timescale#1709 Prevent starting background workers with NOLOGIN * timescale#1713 Fix miscellaneous background worker issues * timescale#1715 Fix issue with overly aggressive chunk exclusion in outer joins * timescale#1719 Fix restoring/scheduler entrypoint to avoid BGW death * timescale#1720 Add scheduler cache invalidations * timescale#1727 Fix compressing INTERVAL columns * timescale#1728 Handle Sort nodes in ConstraintAwareAppend * timescale#1730 Fix partial index handling on hypertables * timescale#1739 Use release OpenSSL DLLs for debug builds on Windows * timescale#1740 Fix invalidation entries from multiple caggs on same hypertable * timescale#1743 Fix continuous aggregate materialization timezone handling * timescale#1748 Fix remove_drop_chunks_policy for continuous aggregates **Thanks** * @RJPhillips01 for reporting an issue with drop chunks. * @b4eEX for reporting an issue with disabling compression. * @darko408 for reporting an issue with order by on compressed hypertables * @mrechte for reporting an issue with compressing INTERVAL columns * @tstaehli for reporting an issue with ConstraintAwareAppend * @chadshowalter for reporting an issue with partial index on hypertables * @geoffreybennett for reporting an issue with create_hypertable when interrupting operations * @alxndrdude for reporting an issue with background workers during restore * @zcavaliero for reporting and fixing an issue with dropped columns in hypertable_relation_size * @ismailakpolat for reporting an issue with cagg materialization on hypertables with TIMESTAMP column

@RJPhillips01

This maintenance release contains bugfixes since the 1.6.0 release. We deem it medium priority for upgrading. In particular the fixes contained in this maintenance release address bugs in continuous aggregates, time_bucket_gapfill, partial index handling and drop_chunks. **For this release only**, you will need to restart the database before running `ALTER EXTENSION` **Minor Features** * timescale#1666 Support drop_chunks API for continuous aggregates * timescale#1711 Change log level for continuous aggregate materialization messages **Bugfixes** * timescale#1630 Print notice for COPY TO on hypertable * timescale#1648 Drop chunks from materialized hypertable * timescale#1668 Cannot add dimension if hypertable has empty chunks * timescale#1673 Fix crash when interrupting create_hypertable * timescale#1674 Fix time_bucket_gapfill's interaction with GROUP BY * timescale#1686 Fix order by queries on compressed hypertables that have char segment by column * timescale#1687 Fix issue with disabling compression when foreign keys are present * timescale#1688 Handle many BGW jobs better * timescale#1698 Add logic to ignore dropped chunks in hypertable_relation_size * timescale#1704 Fix bad plan for continuous aggregate materialization * timescale#1709 Prevent starting background workers with NOLOGIN * timescale#1713 Fix miscellaneous background worker issues * timescale#1715 Fix issue with overly aggressive chunk exclusion in outer joins * timescale#1719 Fix restoring/scheduler entrypoint to avoid BGW death * timescale#1720 Add scheduler cache invalidations * timescale#1727 Fix compressing INTERVAL columns * timescale#1728 Handle Sort nodes in ConstraintAwareAppend * timescale#1730 Fix partial index handling on hypertables * timescale#1739 Use release OpenSSL DLLs for debug builds on Windows * timescale#1740 Fix invalidation entries from multiple caggs on same hypertable * timescale#1743 Fix continuous aggregate materialization timezone handling * timescale#1748 Fix remove_drop_chunks_policy for continuous aggregates **Thanks** * @RJPhillips01 for reporting an issue with drop chunks. * @b4eEX for reporting an issue with disabling compression. * @darko408 for reporting an issue with order by on compressed hypertables * @mrechte for reporting an issue with compressing INTERVAL columns * @tstaehli for reporting an issue with ConstraintAwareAppend * @chadshowalter for reporting an issue with partial index on hypertables * @geoffreybennett for reporting an issue with create_hypertable when interrupting operations * @alxndrdude for reporting an issue with background workers during restore * @zcavaliero for reporting and fixing an issue with dropped columns in hypertable_relation_size * @ismailakpolat for reporting an issue with cagg materialization on hypertables with TIMESTAMP column

@RJPhillips01

This maintenance release contains bugfixes since the 1.6.0 release. We deem it medium priority for upgrading. In particular the fixes contained in this maintenance release address bugs in continuous aggregates, time_bucket_gapfill, partial index handling and drop_chunks. **For this release only**, you will need to restart the database after upgrade before restoring a backup. **Minor Features** * timescale#1666 Support drop_chunks API for continuous aggregates * timescale#1711 Change log level for continuous aggregate materialization messages **Bugfixes** * timescale#1630 Print notice for COPY TO on hypertable * timescale#1648 Drop chunks from materialized hypertable * timescale#1668 Cannot add dimension if hypertable has empty chunks * timescale#1673 Fix crash when interrupting create_hypertable * timescale#1674 Fix time_bucket_gapfill's interaction with GROUP BY * timescale#1686 Fix order by queries on compressed hypertables that have char segment by column * timescale#1687 Fix issue with disabling compression when foreign keys are present * timescale#1688 Handle many BGW jobs better * timescale#1698 Add logic to ignore dropped chunks in hypertable_relation_size * timescale#1704 Fix bad plan for continuous aggregate materialization * timescale#1709 Prevent starting background workers with NOLOGIN * timescale#1713 Fix miscellaneous background worker issues * timescale#1715 Fix issue with overly aggressive chunk exclusion in outer joins * timescale#1719 Fix restoring/scheduler entrypoint to avoid BGW death * timescale#1720 Add scheduler cache invalidations * timescale#1727 Fix compressing INTERVAL columns * timescale#1728 Handle Sort nodes in ConstraintAwareAppend * timescale#1730 Fix partial index handling on hypertables * timescale#1739 Use release OpenSSL DLLs for debug builds on Windows * timescale#1740 Fix invalidation entries from multiple caggs on same hypertable * timescale#1743 Fix continuous aggregate materialization timezone handling * timescale#1748 Fix remove_drop_chunks_policy for continuous aggregates **Thanks** * @RJPhillips01 for reporting an issue with drop chunks. * @b4eEX for reporting an issue with disabling compression. * @darko408 for reporting an issue with order by on compressed hypertables * @mrechte for reporting an issue with compressing INTERVAL columns * @tstaehli for reporting an issue with ConstraintAwareAppend * @chadshowalter for reporting an issue with partial index on hypertables * @geoffreybennett for reporting an issue with create_hypertable when interrupting operations * @alxndrdude for reporting an issue with background workers during restore * @zcavaliero for reporting and fixing an issue with dropped columns in hypertable_relation_size * @ismailakpolat for reporting an issue with cagg materialization on hypertables with TIMESTAMP column

@RJPhillips01

This maintenance release contains bugfixes since the 1.6.0 release. We deem it medium priority for upgrading. In particular the fixes contained in this maintenance release address bugs in continuous aggregates, time_bucket_gapfill, partial index handling and drop_chunks. **For this release only**, you will need to restart the database after upgrade before restoring a backup. **Minor Features** * #1666 Support drop_chunks API for continuous aggregates * #1711 Change log level for continuous aggregate materialization messages **Bugfixes** * #1630 Print notice for COPY TO on hypertable * #1648 Drop chunks from materialized hypertable * #1668 Cannot add dimension if hypertable has empty chunks * #1673 Fix crash when interrupting create_hypertable * #1674 Fix time_bucket_gapfill's interaction with GROUP BY * #1686 Fix order by queries on compressed hypertables that have char segment by column * #1687 Fix issue with disabling compression when foreign keys are present * #1688 Handle many BGW jobs better * #1698 Add logic to ignore dropped chunks in hypertable_relation_size * #1704 Fix bad plan for continuous aggregate materialization * #1709 Prevent starting background workers with NOLOGIN * #1713 Fix miscellaneous background worker issues * #1715 Fix issue with overly aggressive chunk exclusion in outer joins * #1719 Fix restoring/scheduler entrypoint to avoid BGW death * #1720 Add scheduler cache invalidations * #1727 Fix compressing INTERVAL columns * #1728 Handle Sort nodes in ConstraintAwareAppend * #1730 Fix partial index handling on hypertables * #1739 Use release OpenSSL DLLs for debug builds on Windows * #1740 Fix invalidation entries from multiple caggs on same hypertable * #1743 Fix continuous aggregate materialization timezone handling * #1748 Fix remove_drop_chunks_policy for continuous aggregates **Thanks** * @RJPhillips01 for reporting an issue with drop chunks. * @b4eEX for reporting an issue with disabling compression. * @darko408 for reporting an issue with order by on compressed hypertables * @mrechte for reporting an issue with compressing INTERVAL columns * @tstaehli for reporting an issue with ConstraintAwareAppend * @chadshowalter for reporting an issue with partial index on hypertables * @geoffreybennett for reporting an issue with create_hypertable when interrupting operations * @alxndrdude for reporting an issue with background workers during restore * @zcavaliero for reporting and fixing an issue with dropped columns in hypertable_relation_size * @ismailakpolat for reporting an issue with cagg materialization on hypertables with TIMESTAMP column

@RJPhillips01

This maintenance release contains bugfixes since the 1.6.0 release. We deem it medium priority for upgrading. In particular the fixes contained in this maintenance release address bugs in continuous aggregates, time_bucket_gapfill, partial index handling and drop_chunks. **For this release only**, you will need to restart the database after upgrade before restoring a backup. **Minor Features** * #1666 Support drop_chunks API for continuous aggregates * #1711 Change log level for continuous aggregate materialization messages **Bugfixes** * #1630 Print notice for COPY TO on hypertable * #1648 Drop chunks from materialized hypertable * #1668 Cannot add dimension if hypertable has empty chunks * #1673 Fix crash when interrupting create_hypertable * #1674 Fix time_bucket_gapfill's interaction with GROUP BY * #1686 Fix order by queries on compressed hypertables that have char segment by column * #1687 Fix issue with disabling compression when foreign keys are present * #1688 Handle many BGW jobs better * #1698 Add logic to ignore dropped chunks in hypertable_relation_size * #1704 Fix bad plan for continuous aggregate materialization * #1709 Prevent starting background workers with NOLOGIN * #1713 Fix miscellaneous background worker issues * #1715 Fix issue with overly aggressive chunk exclusion in outer joins * #1719 Fix restoring/scheduler entrypoint to avoid BGW death * #1720 Add scheduler cache invalidations * #1727 Fix compressing INTERVAL columns * #1728 Handle Sort nodes in ConstraintAwareAppend * #1730 Fix partial index handling on hypertables * #1739 Use release OpenSSL DLLs for debug builds on Windows * #1740 Fix invalidation entries from multiple caggs on same hypertable * #1743 Fix continuous aggregate materialization timezone handling * #1748 Fix remove_drop_chunks_policy for continuous aggregates **Thanks** * @RJPhillips01 for reporting an issue with drop chunks. * @b4eEX for reporting an issue with disabling compression. * @darko408 for reporting an issue with order by on compressed hypertables * @mrechte for reporting an issue with compressing INTERVAL columns * @tstaehli for reporting an issue with ConstraintAwareAppend * @chadshowalter for reporting an issue with partial index on hypertables * @geoffreybennett for reporting an issue with create_hypertable when interrupting operations * @alxndrdude for reporting an issue with background workers during restore * @zcavaliero for reporting and fixing an issue with dropped columns in hypertable_relation_size * @ismailakpolat for reporting an issue with cagg materialization on hypertables with TIMESTAMP column

@RJPhillips01

This maintenance release contains bugfixes since the 1.6.0 release. We deem it medium priority for upgrading. In particular the fixes contained in this maintenance release address bugs in continuous aggregates, time_bucket_gapfill, partial index handling and drop_chunks. **For this release only**, you will need to restart the database after upgrade before restoring a backup. **Minor Features** * #1666 Support drop_chunks API for continuous aggregates * #1711 Change log level for continuous aggregate materialization messages **Bugfixes** * #1630 Print notice for COPY TO on hypertable * #1648 Drop chunks from materialized hypertable * #1668 Cannot add dimension if hypertable has empty chunks * #1673 Fix crash when interrupting create_hypertable * #1674 Fix time_bucket_gapfill's interaction with GROUP BY * #1686 Fix order by queries on compressed hypertables that have char segment by column * #1687 Fix issue with disabling compression when foreign keys are present * #1688 Handle many BGW jobs better * #1698 Add logic to ignore dropped chunks in hypertable_relation_size * #1704 Fix bad plan for continuous aggregate materialization * #1709 Prevent starting background workers with NOLOGIN * #1713 Fix miscellaneous background worker issues * #1715 Fix issue with overly aggressive chunk exclusion in outer joins * #1719 Fix restoring/scheduler entrypoint to avoid BGW death * #1720 Add scheduler cache invalidations * #1727 Fix compressing INTERVAL columns * #1728 Handle Sort nodes in ConstraintAwareAppend * #1730 Fix partial index handling on hypertables * #1739 Use release OpenSSL DLLs for debug builds on Windows * #1740 Fix invalidation entries from multiple caggs on same hypertable * #1743 Fix continuous aggregate materialization timezone handling * #1748 Fix remove_drop_chunks_policy for continuous aggregates * #1756 Fix handling of dropped chunks in compression background worker **Thanks** * @RJPhillips01 for reporting an issue with drop chunks. * @b4eEX for reporting an issue with disabling compression. * @darko408 for reporting an issue with order by on compressed hypertables * @mrechte for reporting an issue with compressing INTERVAL columns * @tstaehli for reporting an issue with ConstraintAwareAppend * @chadshowalter for reporting an issue with partial index on hypertables * @geoffreybennett for reporting an issue with create_hypertable when interrupting operations * @alxndrdude for reporting an issue with background workers during restore * @zcavaliero for reporting and fixing an issue with dropped columns in hypertable_relation_size * @ismailakpolat for reporting an issue with cagg materialization on hypertables with TIMESTAMP column

@RJPhillips01

This maintenance release contains bugfixes since the 1.6.0 release. We deem it medium priority for upgrading. In particular the fixes contained in this maintenance release address bugs in continuous aggregates, time_bucket_gapfill, partial index handling and drop_chunks. **For this release only**, you will need to restart the database after upgrade before restoring a backup. **Minor Features** * #1666 Support drop_chunks API for continuous aggregates * #1711 Change log level for continuous aggregate materialization messages **Bugfixes** * #1630 Print notice for COPY TO on hypertable * #1648 Drop chunks from materialized hypertable * #1668 Cannot add dimension if hypertable has empty chunks * #1673 Fix crash when interrupting create_hypertable * #1674 Fix time_bucket_gapfill's interaction with GROUP BY * #1686 Fix order by queries on compressed hypertables that have char segment by column * #1687 Fix issue with disabling compression when foreign keys are present * #1688 Handle many BGW jobs better * #1698 Add logic to ignore dropped chunks in hypertable_relation_size * #1704 Fix bad plan for continuous aggregate materialization * #1709 Prevent starting background workers with NOLOGIN * #1713 Fix miscellaneous background worker issues * #1715 Fix issue with overly aggressive chunk exclusion in outer joins * #1719 Fix restoring/scheduler entrypoint to avoid BGW death * #1720 Add scheduler cache invalidations * #1727 Fix compressing INTERVAL columns * #1728 Handle Sort nodes in ConstraintAwareAppend * #1730 Fix partial index handling on hypertables * #1739 Use release OpenSSL DLLs for debug builds on Windows * #1740 Fix invalidation entries from multiple caggs on same hypertable * #1743 Fix continuous aggregate materialization timezone handling * #1748 Fix remove_drop_chunks_policy for continuous aggregates * #1756 Fix handling of dropped chunks in compression background worker **Thanks** * @RJPhillips01 for reporting an issue with drop chunks. * @b4eEX for reporting an issue with disabling compression. * @darko408 for reporting an issue with order by on compressed hypertables * @mrechte for reporting an issue with compressing INTERVAL columns * @tstaehli for reporting an issue with ConstraintAwareAppend * @chadshowalter for reporting an issue with partial index on hypertables * @geoffreybennett for reporting an issue with create_hypertable when interrupting operations * @alxndrdude for reporting an issue with background workers during restore * @zcavaliero for reporting and fixing an issue with dropped columns in hypertable_relation_size * @ismailakpolat for reporting an issue with cagg materialization on hypertables with TIMESTAMP column

@RJPhillips01

This maintenance release contains bugfixes since the 1.6.0 release. We deem it medium priority for upgrading. In particular the fixes contained in this maintenance release address bugs in continuous aggregates, time_bucket_gapfill, partial index handling and drop_chunks. **For this release only**, you will need to restart the database after upgrade before restoring a backup. **Minor Features** * #1666 Support drop_chunks API for continuous aggregates * #1711 Change log level for continuous aggregate materialization messages **Bugfixes** * #1630 Print notice for COPY TO on hypertable * #1648 Drop chunks from materialized hypertable * #1668 Cannot add dimension if hypertable has empty chunks * #1673 Fix crash when interrupting create_hypertable * #1674 Fix time_bucket_gapfill's interaction with GROUP BY * #1686 Fix order by queries on compressed hypertables that have char segment by column * #1687 Fix issue with disabling compression when foreign keys are present * #1688 Handle many BGW jobs better * #1698 Add logic to ignore dropped chunks in hypertable_relation_size * #1704 Fix bad plan for continuous aggregate materialization * #1709 Prevent starting background workers with NOLOGIN * #1713 Fix miscellaneous background worker issues * #1715 Fix issue with overly aggressive chunk exclusion in outer joins * #1719 Fix restoring/scheduler entrypoint to avoid BGW death * #1720 Add scheduler cache invalidations * #1727 Fix compressing INTERVAL columns * #1728 Handle Sort nodes in ConstraintAwareAppend * #1730 Fix partial index handling on hypertables * #1739 Use release OpenSSL DLLs for debug builds on Windows * #1740 Fix invalidation entries from multiple caggs on same hypertable * #1743 Fix continuous aggregate materialization timezone handling * #1748 Fix remove_drop_chunks_policy for continuous aggregates * #1756 Fix handling of dropped chunks in compression background worker **Thanks** * @RJPhillips01 for reporting an issue with drop chunks. * @b4eEX for reporting an issue with disabling compression. * @darko408 for reporting an issue with order by on compressed hypertables * @mrechte for reporting an issue with compressing INTERVAL columns * @tstaehli for reporting an issue with ConstraintAwareAppend * @chadshowalter for reporting an issue with partial index on hypertables * @geoffreybennett for reporting an issue with create_hypertable when interrupting operations * @alxndrdude for reporting an issue with background workers during restore * @zcavaliero for reporting and fixing an issue with dropped columns in hypertable_relation_size * @ismailakpolat for reporting an issue with cagg materialization on hypertables with TIMESTAMP column

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Drop chunks from materialized hypertables

c77780b

Add support for dropping chunks from materialized hypertables. drop_chunks_policy can now be set up for materialized hypertables.

gayyappan force-pushed the compress_fix branch from 4cb5b0c to c77780b Compare February 26, 2020 15:38

gayyappan merged commit 91fe723 into timescale:master Feb 26, 2020

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Documentation changes for 1.6.1 timescale/docs.timescale.com-content#334

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Release 1.6.1 #1749

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Drop chunks from materialized hypertables #1666

Drop chunks from materialized hypertables #1666

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svenklemm commented Feb 24, 2020

	elog(ERROR, "cannot drop_chunks on a continuous aggregate materialization table");
	elog(ERROR, "cannot drop chunks on a continuous aggregate materialization table");

	errmsg("cannot add drop chunks policy to materialized hypertables \"%s\" ",
	errmsg("cannot add drop chunks policy to materialized hypertable \"%s\" ",

Drop chunks from materialized hypertables #1666

Drop chunks from materialized hypertables #1666

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