-
Notifications
You must be signed in to change notification settings - Fork 2.4k
Commit
This commit does not belong to any branch on this repository, and may belong to a fork outside of the repository.
- Loading branch information
Showing
4 changed files
with
300 additions
and
7 deletions.
There are no files selected for viewing
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,78 @@ | ||
| #!/usr/bin/env bash | ||
|
|
||
| function usage { | ||
| >&2 echo "Error: $1" | ||
| >&2 echo "" | ||
| >&2 echo "Usage: KEYSPACE={keyspace} $0" | ||
| >&2 echo "" | ||
| >&2 echo "The following parameters can be set via environment:" | ||
| >&2 echo " KEYSPACE - keyspace " | ||
| >&2 echo "" | ||
| exit 1 | ||
| } | ||
|
|
||
| confirm() { | ||
| read -r -p "${1:-Are you sure? [y/N]} " response | ||
| case "$response" in | ||
| [yY][eE][sS]|[yY]) | ||
| true | ||
| ;; | ||
| *) | ||
| exit 1 | ||
| ;; | ||
| esac | ||
| } | ||
|
|
||
| keyspace=${KEYSPACE} | ||
|
|
||
| if [[ ${keyspace} == "" ]]; then | ||
| usage "missing KEYSPACE parameter" | ||
| fi | ||
|
|
||
| if [[ ${keyspace} =~ [^a-zA-Z0-9_] ]]; then | ||
| usage "invalid characters in KEYSPACE=$keyspace parameter, please use letters, digits or underscores" | ||
| fi | ||
|
|
||
|
|
||
| row_count=$(cqlsh -e "select count(*) from $keyspace.dependencies;"|head -4|tail -1| tr -d ' ') | ||
|
|
||
| echo "About to copy $row_count rows." | ||
| confirm | ||
|
|
||
| cqlsh -e "COPY $keyspace.dependencies (ts, dependencies ) to 'dependencies.csv'" | ||
|
|
||
| if [ ! -f dependencies.csv ]; then | ||
| echo "Could not find dependencies.csv. Backup from cassandra was probably not successful" | ||
| exit 1 | ||
| fi | ||
|
|
||
| if [ ${row_count} -ne $(wc -l dependencies.csv | cut -f 1 -d ' ') ]; then | ||
| echo "Number of rows in file is not equal to number of rows in cassandra" | ||
| exit 1 | ||
| fi | ||
|
|
||
|
|
||
| while IFS="," read ts dependency; do bucket=`date +"%Y%m%d" -d "$ts"`; echo "$bucket,$ts,$dependency"; done < dependencies.csv > dependencies_datebucket.csv | ||
|
|
||
| dependencies_ttl=$(cqlsh -e "select default_time_to_live from system_schema.tables WHERE keyspace_name='$keyspace' AND table_name='dependencies';"|head -4|tail -1|tr -d ' ') | ||
|
|
||
| echo "Setting dependencies_ttl to $dependencies_ttl" | ||
|
|
||
| cqlsh -e "DROP INDEX IF EXISTS $keyspace.ts_index" | ||
| cqlsh -e "DROP TABLE IF EXISTS $keyspace.dependencies" | ||
|
|
||
| cqlsh -e "CREATE TABLE $keyspace.dependencies ( | ||
| ts timestamp, | ||
| date_bucket bigint, | ||
| dependencies list<frozen<dependency>>, | ||
| PRIMARY KEY (date_bucket, ts) | ||
| ) WITH CLUSTERING ORDER BY (ts DESC) | ||
| AND compaction = { | ||
| 'min_threshold': '4', | ||
| 'max_threshold': '32', | ||
| 'class': 'org.apache.cassandra.db.compaction.SizeTieredCompactionStrategy' | ||
| } | ||
| AND default_time_to_live = $dependencies_ttl | ||
| " | ||
|
|
||
| cqlsh -e "COPY $keyspace.dependencies (date_bucket, ts, dependencies) FROM 'dependencies_datebucket.csv'" |
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,202 @@ | ||
| -- | ||
| -- Creates Cassandra keyspace with tables for traces and dependencies. | ||
| -- | ||
| -- Required parameters: | ||
| -- | ||
| -- keyspace | ||
| -- name of the keyspace | ||
| -- replication | ||
| -- replication strategy for the keyspace, such as | ||
| -- for prod environments | ||
| -- {'class': 'NetworkTopologyStrategy', '$datacenter': '${replication_factor}' } | ||
| -- for test environments | ||
| -- {'class': 'SimpleStrategy', 'replication_factor': '1'} | ||
| -- trace_ttl | ||
| -- default time to live for trace data, in seconds | ||
| -- dependencies_ttl | ||
| -- default time to live for dependencies data, in seconds (0 for no TTL) | ||
| -- | ||
| -- Non-configurable settings: | ||
| -- gc_grace_seconds is non-zero, see: http://www.uberobert.com/cassandra_gc_grace_disables_hinted_handoff/ | ||
| -- For TTL of 2 days, compaction window is 1 hour, rule of thumb here: http://thelastpickle.com/blog/2016/12/08/TWCS-part1.html | ||
|
|
||
| CREATE KEYSPACE IF NOT EXISTS ${keyspace} WITH replication = ${replication}; | ||
|
|
||
| CREATE TYPE IF NOT EXISTS ${keyspace}.keyvalue ( | ||
| key text, | ||
| value_type text, | ||
| value_string text, | ||
| value_bool boolean, | ||
| value_long bigint, | ||
| value_double double, | ||
| value_binary blob, | ||
| ); | ||
|
|
||
| CREATE TYPE IF NOT EXISTS ${keyspace}.log ( | ||
| ts bigint, | ||
| fields list<frozen<keyvalue>>, | ||
| ); | ||
|
|
||
| CREATE TYPE IF NOT EXISTS ${keyspace}.span_ref ( | ||
| ref_type text, | ||
| trace_id blob, | ||
| span_id bigint, | ||
| ); | ||
|
|
||
| CREATE TYPE IF NOT EXISTS ${keyspace}.process ( | ||
| service_name text, | ||
| tags list<frozen<keyvalue>>, | ||
| ); | ||
|
|
||
| -- Notice we have span_hash. This exists only for zipkin backwards compat. Zipkin allows spans with the same ID. | ||
| -- Note: Cassandra re-orders non-PK columns alphabetically, so the table looks differently in CQLSH "describe table". | ||
| -- start_time is bigint instead of timestamp as we require microsecond precision | ||
| CREATE TABLE IF NOT EXISTS ${keyspace}.traces ( | ||
| trace_id blob, | ||
| span_id bigint, | ||
| span_hash bigint, | ||
| parent_id bigint, | ||
| operation_name text, | ||
| flags int, | ||
| start_time bigint, | ||
| duration bigint, | ||
| tags list<frozen<keyvalue>>, | ||
| logs list<frozen<log>>, | ||
| refs list<frozen<span_ref>>, | ||
| process frozen<process>, | ||
| PRIMARY KEY (trace_id, span_id, span_hash) | ||
| ) | ||
| WITH compaction = { | ||
| 'compaction_window_size': '1', | ||
| 'compaction_window_unit': 'HOURS', | ||
| 'class': 'org.apache.cassandra.db.compaction.TimeWindowCompactionStrategy' | ||
| } | ||
| AND dclocal_read_repair_chance = 0.0 | ||
| AND default_time_to_live = ${trace_ttl} | ||
| AND speculative_retry = 'NONE' | ||
| AND gc_grace_seconds = 10800; -- 3 hours of downtime acceptable on nodes | ||
|
|
||
| CREATE TABLE IF NOT EXISTS ${keyspace}.service_names ( | ||
| service_name text, | ||
| PRIMARY KEY (service_name) | ||
| ) | ||
| WITH compaction = { | ||
| 'min_threshold': '4', | ||
| 'max_threshold': '32', | ||
| 'class': 'org.apache.cassandra.db.compaction.SizeTieredCompactionStrategy' | ||
| } | ||
| AND dclocal_read_repair_chance = 0.0 | ||
| AND default_time_to_live = ${trace_ttl} | ||
| AND speculative_retry = 'NONE' | ||
| AND gc_grace_seconds = 10800; -- 3 hours of downtime acceptable on nodes | ||
|
|
||
| CREATE TABLE IF NOT EXISTS ${keyspace}.operation_names ( | ||
| service_name text, | ||
| operation_name text, | ||
| PRIMARY KEY ((service_name), operation_name) | ||
| ) | ||
| WITH compaction = { | ||
| 'min_threshold': '4', | ||
| 'max_threshold': '32', | ||
| 'class': 'org.apache.cassandra.db.compaction.SizeTieredCompactionStrategy' | ||
| } | ||
| AND dclocal_read_repair_chance = 0.0 | ||
| AND default_time_to_live = ${trace_ttl} | ||
| AND speculative_retry = 'NONE' | ||
| AND gc_grace_seconds = 10800; -- 3 hours of downtime acceptable on nodes | ||
|
|
||
| -- index of trace IDs by service + operation names, sorted by span start_time. | ||
| CREATE TABLE IF NOT EXISTS ${keyspace}.service_operation_index ( | ||
| service_name text, | ||
| operation_name text, | ||
| start_time bigint, | ||
| trace_id blob, | ||
| PRIMARY KEY ((service_name, operation_name), start_time) | ||
| ) WITH CLUSTERING ORDER BY (start_time DESC) | ||
| AND compaction = { | ||
| 'compaction_window_size': '1', | ||
| 'compaction_window_unit': 'HOURS', | ||
| 'class': 'org.apache.cassandra.db.compaction.TimeWindowCompactionStrategy' | ||
| } | ||
| AND dclocal_read_repair_chance = 0.0 | ||
| AND default_time_to_live = ${trace_ttl} | ||
| AND speculative_retry = 'NONE' | ||
| AND gc_grace_seconds = 10800; -- 3 hours of downtime acceptable on nodes | ||
|
|
||
| CREATE TABLE IF NOT EXISTS ${keyspace}.service_name_index ( | ||
| service_name text, | ||
| bucket int, | ||
| start_time bigint, | ||
| trace_id blob, | ||
| PRIMARY KEY ((service_name, bucket), start_time) | ||
| ) WITH CLUSTERING ORDER BY (start_time DESC) | ||
| AND compaction = { | ||
| 'compaction_window_size': '1', | ||
| 'compaction_window_unit': 'HOURS', | ||
| 'class': 'org.apache.cassandra.db.compaction.TimeWindowCompactionStrategy' | ||
| } | ||
| AND dclocal_read_repair_chance = 0.0 | ||
| AND default_time_to_live = ${trace_ttl} | ||
| AND speculative_retry = 'NONE' | ||
| AND gc_grace_seconds = 10800; -- 3 hours of downtime acceptable on nodes | ||
|
|
||
| CREATE TABLE IF NOT EXISTS ${keyspace}.duration_index ( | ||
| service_name text, // service name | ||
| operation_name text, // operation name, or blank for queries without span name | ||
| bucket timestamp, // time bucket, - the start_time of the given span rounded to an hour | ||
| duration bigint, // span duration, in microseconds | ||
| start_time bigint, | ||
| trace_id blob, | ||
| PRIMARY KEY ((service_name, operation_name, bucket), duration, start_time, trace_id) | ||
| ) WITH CLUSTERING ORDER BY (duration DESC, start_time DESC) | ||
| AND compaction = { | ||
| 'compaction_window_size': '1', | ||
| 'compaction_window_unit': 'HOURS', | ||
| 'class': 'org.apache.cassandra.db.compaction.TimeWindowCompactionStrategy' | ||
| } | ||
| AND dclocal_read_repair_chance = 0.0 | ||
| AND default_time_to_live = ${trace_ttl} | ||
| AND speculative_retry = 'NONE' | ||
| AND gc_grace_seconds = 10800; -- 3 hours of downtime acceptable on nodes | ||
|
|
||
| -- a bucketing strategy may have to be added for tag queries | ||
| -- we can make this table even better by adding a timestamp to it | ||
| CREATE TABLE IF NOT EXISTS ${keyspace}.tag_index ( | ||
| service_name text, | ||
| tag_key text, | ||
| tag_value text, | ||
| start_time bigint, | ||
| trace_id blob, | ||
| span_id bigint, | ||
| PRIMARY KEY ((service_name, tag_key, tag_value), start_time, trace_id, span_id) | ||
| ) | ||
| WITH CLUSTERING ORDER BY (start_time DESC) | ||
| AND compaction = { | ||
| 'compaction_window_size': '1', | ||
| 'compaction_window_unit': 'HOURS', | ||
| 'class': 'org.apache.cassandra.db.compaction.TimeWindowCompactionStrategy' | ||
| } | ||
| AND dclocal_read_repair_chance = 0.0 | ||
| AND default_time_to_live = ${trace_ttl} | ||
| AND speculative_retry = 'NONE' | ||
| AND gc_grace_seconds = 10800; -- 3 hours of downtime acceptable on nodes | ||
|
|
||
| CREATE TYPE IF NOT EXISTS ${keyspace}.dependency ( | ||
| parent text, | ||
| child text, | ||
| call_count bigint, | ||
| ); | ||
|
|
||
| -- compaction strategy is intentionally different as compared to other tables due to the size of dependencies data | ||
| CREATE TABLE IF NOT EXISTS ${keyspace}.dependencies ( | ||
| ts timestamp, | ||
| date_bucket bigint, | ||
| dependencies list<frozen<dependency>>, | ||
| PRIMARY KEY (date_bucket, ts) | ||
| ) WITH CLUSTERING ORDER BY (ts DESC) | ||
| AND compaction = { | ||
| 'min_threshold': '4', | ||
| 'max_threshold': '32', | ||
| 'class': 'org.apache.cassandra.db.compaction.SizeTieredCompactionStrategy' | ||
| } | ||
| AND default_time_to_live = ${dependencies_ttl}; |