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[HUDI-1352] Add FileSystemView APIs to query pending clustering ops #2202

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merged 1 commit into from
Nov 5, 2020

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What is the purpose of the pull request

Add FileSystemView APIs to query pending clustering ops

Brief change log

  • Clustering is tracked using 'REPLACE' action
  • Introduce metadata for replace requested file. OperationType is set to cluster to differentiate between Clustering and other use cases
  • Changes to support IncrementalTimeline pending. HUDI-1353
  • Changes to block updates on files in pending clustering is pending HUDI-1354
  • How clustering interacts with other files such as bootstrapped (non-hudi) files is pending.

Verify this pull request

This change added tests and can be verified as follows:

Committer checklist

  • Has a corresponding JIRA in PR title & commit

  • Commit message is descriptive of the change

  • CI is green

  • Necessary doc changes done or have another open PR

  • For large changes, please consider breaking it into sub-tasks under an umbrella JIRA.

* limitations under the License.
*/
{
"namespace":"org.apache.hudi.avro.model",
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At a high level, don't think we need a clustering strategy avsc for this, we can just drive this from Reflection and classnames, just like CompactionPlans ?

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There needs to be coordination between scheduling and executing clustering. For example, when scheduling, we specify parameters such as 'sortColumns', 'targetFileSize' etc. These needs to be passed to async job that clusters data. These parameters are serialized and stored in the strategy/plan.

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The parameters such as 'sortColumns', 'targetFileSize' etc serialized to the clustering job makes sense to me, my question is around the strategy class name itself being written to the file. Is it just for tracking the strategy or will the async clustering job actually make use of this strategy to read our the strategyParams ?

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Yes, async strategy job would read the strategy to instantiate the class. That strategy object will be used to write clustered records (Example: strategy may use custom partitioner to respect sortColumns)

* limitations under the License.
*/
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"namespace":"org.apache.hudi.avro.model",
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Same comment, just roll up all the datastructures that you need into the HoodieClusteringPlan, is it possible to merge the clustering plan with the insert-overwrite plan ?

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I think this model is flexible for future operations. Replace could be used for other operations such as column pruning and many other use cases. Trying to fit metadata for all these special operations into one format may cause problems (InsertOverwrite doesnt really have a plan today. so we have to generate plan just for sake of creating it). We also dont want to introduce other top level commits because its lot of work, so i want to keep this as generic as possible.

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Keeping the model flexible sounds fair to me, I'm not following how that is connected to introducing other top level commits, could you please expand ?

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initially we were considering replacecommit, clusteringcommit as separate things. Only reason not to introduce new commit is to keep it simple as post commit metadata looks very similar. I was trying to say that if these were separate top level commits, this file is not needed.

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@satishkotha left some comments.

High level, few more questions:

  1. Seems like a lot of commonality of code with compaction, are we planning on merging them together ?
  2. I see that we are going to allow schedule clustering for file groups that even have log files, in the scheduling process are we checking if a compaction is already scheduled for some file groups for which we cannot schedule clustering ?

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@satishkotha left some comments.

High level, few more questions:

  1. Seems like a lot of commonality of code with compaction, are we planning on merging them together ?
  2. I see that we are going to allow schedule clustering for file groups that even have log files, in the scheduling process are we checking if a compaction is already scheduled for some file groups for which we cannot schedule clustering ?
  1. This PR just includes FileSystemView APIs. I think its better to keep them separate APIs because the functionality is different (updates are allowed for files in compaction for example). When actual scheduling and clustering is implemented, its possible to reuse some of core logic such as ActionExecutors. Let me know if you see better way to organize this and share FileSystemView API as well
  2. scheduling logic is not implemented yet. This is just first PR to cover high level FileSystemView APIs. The next PR will include this logic. Let me know if you want me to combine everything into one PR or if you have any other feedback.

@satishkotha satishkotha force-pushed the sk/scheduleClustering branch 2 times, most recently from fe11638 to d20e11d Compare October 28, 2020 23:26
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codecov-io commented Oct 29, 2020

Codecov Report

Merging #2202 into master will decrease coverage by 0.12%.
The diff coverage is 69.59%.

Impacted file tree graph

@@             Coverage Diff              @@
##             master    #2202      +/-   ##
============================================
- Coverage     53.63%   53.50%   -0.13%     
+ Complexity     2848     2767      -81     
============================================
  Files           359      348      -11     
  Lines         16545    16098     -447     
  Branches       1780     1642     -138     
============================================
- Hits           8874     8614     -260     
+ Misses         6912     6789     -123     
+ Partials        759      695      -64     
Flag Coverage Δ Complexity Δ
hudicli 38.37% <ø> (ø) 193.00 <ø> (ø)
hudiclient 100.00% <ø> (ø) 0.00 <ø> (ø)
hudicommon 55.26% <68.09%> (+0.51%) 1853.00 <41.00> (+58.00)
hudihadoopmr 32.94% <ø> (-0.12%) 183.00 <ø> (+2.00) ⬇️
hudispark 65.58% <ø> (+0.10%) 155.00 <ø> (-149.00) ⬆️
huditimelineservice 65.30% <100.00%> (+3.01%) 56.00 <3.00> (+6.00)
hudiutilities 70.09% <ø> (+0.01%) 327.00 <ø> (+2.00)

Flags with carried forward coverage won't be shown. Click here to find out more.

Impacted Files Coverage Δ Complexity Δ
...che/hudi/common/table/timeline/HoodieTimeline.java 93.18% <ø> (ø) 43.00 <0.00> (ø)
...udi/common/table/timeline/dto/ClusteringOpDTO.java 0.00% <0.00%> (ø) 0.00 <0.00> (?)
...common/table/view/PriorityBasedFileSystemView.java 97.10% <0.00%> (-1.43%) 33.00 <0.00> (ø)
...on/table/view/RemoteHoodieTableFileSystemView.java 0.00% <0.00%> (ø) 0.00 <0.00> (ø)
...i/common/table/view/HoodieTableFileSystemView.java 66.66% <28.57%> (-8.61%) 34.00 <3.00> (+3.00) ⬇️
.../common/table/view/RocksDbBasedFileSystemView.java 80.40% <66.66%> (-0.06%) 72.00 <8.00> (+10.00) ⬇️
...on/table/view/SpillableMapBasedFileSystemView.java 74.19% <77.77%> (+0.60%) 13.00 <1.00> (+1.00)
...common/table/view/FileSystemViewStorageConfig.java 60.00% <83.33%> (+1.57%) 11.00 <1.00> (+1.00)
...a/org/apache/hudi/common/util/ClusteringUtils.java 90.47% <90.47%> (ø) 18.00 <18.00> (?)
...g/apache/hudi/common/model/WriteOperationType.java 55.55% <100.00%> (+1.70%) 2.00 <0.00> (ø)
... and 45 more

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LGTM, @vinothchandar can you take a final pass and merge this ?

@vinothchandar vinothchandar self-assigned this Oct 29, 2020
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@satishkotha @n3nash will do

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@satishkotha this pull request is so good. Base on this pull request. Can i begin to work on implement Simple ClusteringStrategy and ClusteringActionExecutor? or have other task i can participate about clustering now. cc @n3nash @vinothchandar @leesf

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Only some minor comments. Looks awesome!

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@satishkotha this is good to go, except for some minor comments. Feel free to address or file follow ups (except may be the version field, which is good to do now).

@n3nash I will let you take it from here.

@lw309637554 I believe @satishkotha has a umbrella jira with all the issues. Any thoughts on how we can parallelize @satishkotha ?

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@satishkotha this pull request is so good. Base on this pull request. Can i begin to work on implement Simple ClusteringStrategy and ClusteringActionExecutor? or have other task i can participate about clustering now. cc @n3nash @vinothchandar @leesf

@lw309637554 we can use subtasks here to distribute https://issues.apache.org/jira/browse/HUDI-1042. I have already started ClusteringStrategy and executor based on leesf's PR and description in RFC-19. You can pick up other subtasks in HUDI-1042? You could also add another strategy after I send PR for first strategy. The strategy I'm adding is very simple and may not be sufficient for all usecases.

"default": null
},
{
"name":"version",
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Can we add this as the first field (so no issues with reordering etc) we should always be able to read this

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Realize we can achieve this by passing writer/reader schema and also there are places where this is not being done uniformly. So treat this more as a nit

@vinothchandar vinothchandar merged commit 33ec88f into apache:master Nov 5, 2020
prashantwason pushed a commit to prashantwason/incubator-hudi that referenced this pull request Feb 22, 2021
prashantwason pushed a commit to prashantwason/incubator-hudi that referenced this pull request Feb 22, 2021
…pache#2185)

Summary:
[MINOR] Make sure factory method is used to instanciate DFSPathSelector (apache#2187)

* Move createSourceSelector into DFSPathSelector factory method
* Replace constructor call with factory method
* Added some javadoc

[HUDI-1330] handle prefix filtering at directory level (apache#2157)

The current DFSPathSelector only ignore prefix(_, .) at the file level while files under subdirectories
e.g. (.checkpoint/*) are still considered which result in bad-format exception during reading.

[HUDI-1200] fixed NPE in CustomKeyGenerator (apache#2093)

- config field is no longer transient in key generator
- verified that the key generator object is shipped from the driver to executors, just the one time and reused for each record

[HUDI-1209] Properties File must be optional when running deltastreamer (apache#2085)

[MINOR] Fix caller to SparkBulkInsertCommitActionExecutor (apache#2195)

Fixed calling the wrong constructor

[HUDI-1326] Added an API to force publish metrics and flush them. (apache#2152)

* [HUDI-1326] Added an API to force publish metrics and flush them.

Using the added API, publish metrics after each level of the DAG completed in hudi-test-suite.

* Code cleanups

Co-authored-by: Vinoth Chandar <vinoth@apache.org>

[HUDI-1118] Cleanup rollback files residing in .hoodie folder (apache#2205)

[MINOR] Private the NoArgsConstructor of SparkMergeHelper and code clean (apache#2194)

1. Fix merge on read DAG to make docker demo pass (apache#2092)

1. Fix merge on read DAG to make docker demo pass (apache#2092)
2. Fix repeat_count, rollback node

[HUDI-1274] Make hive synchronization supports hourly partition (apache#2122)

[HUDI-1351] Improvements to the hudi test suite for scalability and repeated testing. (apache#2197)

1. Added the --clean-input and --clean-output parameters to clean the input and output directories before starting the job
2. Added the --delete-old-input parameter to deleted older batches for data already ingested. This helps keep number of redundant files low.
3. Added the --input-parallelism parameter to restrict the parallelism when generating input data. This helps keeping the number of generated input files low.
4. Added an option start_offset to Dag Nodes. Without ability to specify start offsets, data is generated into existing partitions. With start offset, DAG can control on which partition, the data is to be written.
5. Fixed generation of records for correct number of partitions
  - In the existing implementation, the partition is chosen as a random long. This does not guarantee exact number of requested partitions to be created.
6. Changed variable blacklistedFields to be a Set as that is faster than List for membership checks.
7. Fixed integer division for Math.ceil. If two integers are divided, the result is not double unless one of the integer is casted to double.

[HUDI-1338] Adding Delete support to test suite framework (apache#2172)

- Adding Delete support to test suite.
         Added DeleteNode
         Added support to generate delete records

Use RateLimiter instead of sleep. Repartition WriteStatus to optimize Hbase index writes (apache#1484)

[HUDI-912] Refactor and relocate KeyGenerator to support more engines (apache#2200)

* [HUDI-912] Refactor and relocate KeyGenerator to support more engines

* Rename KeyGenerators

[HUDI-892] RealtimeParquetInputFormat skip adding projection columns if there are no log files (apache#2190)

* [HUDI-892] RealtimeParquetInputFormat skip adding projection columns if there are no log files
* [HUDI-892]  for test
* [HUDI-892]  fix bug generate array from split
* [HUDI-892] revert test log

[HUDI-1352] Add FileSystemView APIs to query pending clustering operations (apache#2202)

[HUDI-1375] Fix bug in HoodieAvroUtils.removeMetadataFields() method (apache#2232)

Co-authored-by: Wenning Ding <wenningd@amazon.com>

[HUDI-1358] Fix Memory Leak in HoodieLogFormatWriter (apache#2217)

[HUDI-1377] remove duplicate code (apache#2235)

[HUDI-1327] Introduce base implemetation of hudi-flink-client (apache#2176)

[HUDI-1400] Replace Operation enum with WriteOperationType (apache#2259)

[HUDI-1384] Decoupling hive jdbc dependency when HIVE_USE_JDBC_OPT_KEY set false (apache#2241)

[MINOR] clean up and add comments to flink client (apache#2261)

[MINOR] Add apacheflink label (apache#2268)

[HUDI-1393] Add compaction action in archive command (apache#2246)

[HUDI-1364] Add HoodieJavaEngineContext to hudi-java-client (apache#2222)

[HUDI-1396] Fix for preventing bootstrap datasource jobs from hanging via spark-submit (apache#2253)

Co-authored-by: Wenning Ding <wenningd@amazon.com>

[HUDI-1358] Fix leaks in DiskBasedMap and LazyFileIterable (apache#2249)

[HUDI-1392] lose partition info when using spark parameter basePath (apache#2243)

Co-authored-by: zhang wen <wen.zhang@dmall.com>

[MINOR] refactor code in HoodieMergeHandle (apache#2272)

[HUDI-1424]  Write Type changed to BULK_INSERT when set ENABLE_ROW_WRITER_OPT_KEY=true (apache#2289)

[HUDI-1373] Add Support for OpenJ9 JVM (apache#2231)

* add supoort for OpenJ9 VM
* add 32bit openJ9
* Pulled the memory layout specs into their own classes.

[HUDI-1357] Added a check to validate records are not lost during merges. (apache#2216)

- Turned off by default

[HUDI-1196] Update HoodieKey when deduplicating records with global index (apache#2248)

- Works only for overwrite payload (default)
- Does not alter current semantics otherwise

Co-authored-by: Ryan Pifer <ryanpife@amazon.com>

[HUDI-1349] spark sql support overwrite use insert_overwrite_table (apache#2196)

[HUDI-1343] Add standard schema postprocessor which would rewrite the schema using spark-avro conversion (apache#2192)

Co-authored-by: liujh <liujh@t3go.cn>

[HUDI-1427] Fix FileAlreadyExistsException when set HOODIE_AUTO_COMMIT_PROP to true (apache#2295)

[HUDI-1412] Make HoodieWriteConfig support setting different default … (apache#2278)

* [HUDI-1412] Make HoodieWriteConfig support setting different default value according to engine type

fix typo (apache#2308)

Co-authored-by: Xi Chen <chenxi07@qiyi.com>

[HUDI-1040] Make Hudi support Spark 3 (apache#2208)

* Fix flaky MOR unit test

* Update Spark APIs to make it be compatible with both spark2 & spark3

* Refactor bulk insert v2 part to make Hudi be able to compile with Spark3

* Add spark3 profile to handle fasterxml & spark version

* Create hudi-spark-common module & refactor hudi-spark related modules

Co-authored-by: Wenning Ding <wenningd@amazon.com>

[MINOR] Throw an exception when keyGenerator initialization failed (apache#2307)

[HUDI-1395] Fix partition path using FSUtils (apache#2312)

Fixed the logic to get partition path in Copier and Exporter utilities.

[HUDI-1445] Refactor AbstractHoodieLogRecordScanner to use Builder (apache#2313)

[MINOR] Minor improve in IncrementalRelation (apache#2314)

[HUDI-1439] Remove scala dependency from hudi-client-common (apache#2306)

[HUDI-1428] Clean old fileslice is invalid (apache#2292)

Co-authored-by: zhang wen <wen.zhang@dmall.com>
Co-authored-by: zhang wen <steven@stevendeMac-mini.local>

[HUDI-1448]  Hudi dla sync support skip rt table syncing (apache#2324)

[HUDI-1435] Fix bug in Marker File Reconciliation for Non-Partitioned datasets (apache#2301)

[MINOR] Improve code readability by passing in the fileComparisonsRDD in bloom index (apache#2319)

[HUDI-1376] Drop Hudi metadata cols at the beginning of Spark datasource writing (apache#2233)

Co-authored-by: Wenning Ding <wenningd@amazon.com>

[MINOR] Fix error information in exception (apache#2341)

[MINOR] Make QuickstartUtil generate random timestamp instead of 0 (apache#2340)

[HUDI-1406] Add date partition based source input selector for Delta streamer (apache#2264)

- Adds ability to list only recent date based partitions from source data.
- Parallelizes listing for faster tailing of DFSSources

[HUDI-1437]  support more accurate spark JobGroup for better performance tracking (apache#2322)

[HUDI-1470] Use the latest writer schema, when reading from existing parquet files in the hudi-test-suite (apache#2344)

[HUDI-115] Adding DefaultHoodieRecordPayload to honor ordering with combineAndGetUpdateValue (apache#2311)

* Added ability to pass in `properties` to payload methods, so they can perform table/record specific merges
* Added default methods so existing payload classes are backwards compatible.
* Adding DefaultHoodiePayload to honor ordering while merging two records
* Fixing default payload based on feedback

[HUDI-1419] Add base implementation for hudi java client (apache#2286)

[MINOR] Pass root exception to HoodieKeyGeneratorException for more information (apache#2354)

Co-authored-by: Xi Chen <chenxi07@qiyi.com>

[HUDI-1075] Implement simple clustering strategies to create ClusteringPlan and to run the plan

[HUDI-1471] Make QuickStartUtils generate deletes according to specific ts (apache#2357)

[HUDI-1485] Fix Deletes issued without any prior commits exception (apache#2361)

[HUDI-1488] Fix Test Case Failure in TestHBaseIndex (apache#2365)

[HUDI-1489] Fix null pointer exception when reading updated written bootstrap table (apache#2370)

Co-authored-by: Wenning Ding <wenningd@amazon.com>

[HUDI-1451] Support bulk insert v2 with Spark 3.0.0 (apache#2328)

Co-authored-by: Wenning Ding <wenningd@amazon.com>

- Added support for bulk insert v2 with datasource v2 api in Spark 3.0.0.

[HUDI-1487] fix unit test testCopyOnWriteStorage random failed (apache#2364)

[HUDI-1490] Incremental Query should work even when there are  partitions that have no incremental changes (apache#2371)

* Incremental Query should work even when there are  partitions that have no incremental changes

Co-authored-by: Sivabalan Narayanan <sivabala@uber.com>

[HUDI-1331] Adding support for validating entire dataset and long running tests in test suite framework (apache#2168)

* trigger rebuild

* [HUDI-1156] Remove unused dependencies from HoodieDeltaStreamerWrapper Class (apache#1927)

* Adding support for validating records and long running tests in test sutie framework

* Adding partial validate node

* Fixing spark session initiation in Validate nodes

* Fixing validation

* Adding hive table validation to ValidateDatasetNode

* Rebasing with latest commits from master

* Addressing feedback

* Addressing comments

Co-authored-by: lamber-ken <lamberken@163.com>
Co-authored-by: linshan-ma <mabin194046@163.com>

[HUDI-1481]  add  structured streaming and delta streamer clustering unit test (apache#2360)

[HUDI-1354] Block updates and replace on file groups in clustering (apache#2275)

* [HUDI-1354] Block updates and replace on file groups in clustering

* [HUDI-1354]  Block updates and replace on file groups in clustering

[HUDI-1350] Support Partition level delete API in HUDI (apache#2254)

* [HUDI-1350] Support Partition level delete API in HUDI

* [HUDI-1350] Support Partition level delete API in HUDI base InsertOverwriteCommitAction

* [HUDI-1350] Support Partition level delete API in HUDI base InsertOverwriteCommitAction

[HUDI-1495] Upgrade Flink version to 1.12.0 (apache#2384)

[MINOR] Remove the duplicate code in AbstractHoodieWriteClient.startCommit (apache#2385)

[HUDI-1398] Align insert file size for reducing IO (apache#2256)

* [HUDI-1398] Align insert file size for reducing IO

Co-authored-by: zhang wen <wen.zhang@dmall.com>

[HUDI-1484] Escape the partition value in HiveSyncTool (apache#2363)

[HUDI-1474] Add additional unit tests to TestHBaseIndex (apache#2349)

[HUDI-1147] Modify GenericRecordFullPayloadGenerator to generate vali… (apache#2045)

* [HUDI-1147] Modify GenericRecordFullPayloadGenerator to generate valid timestamps

Co-authored-by: Sivabalan Narayanan <sivabala@uber.com>

[HUDI-1493] Fixed schema compatibility check for fields. (apache#2350)

Some field types changes are allowed (e.g. int -> long) while maintaining schema backward compatibility within HUDI. The check was reversed with the reader schema being passed for the write schema.

[MINOR] Update report_coverage.sh (apache#2396)

[HUDI-1434] fix incorrect log file path in HoodieWriteStat (apache#2300)

* [HUDI-1434] fix incorrect log file path in HoodieWriteStat

* HoodieWriteHandle#close() returns a list of WriteStatus objs

* Handle rolled-over log files and return a WriteStatus per log file written

 - Combined data and delete block logging into a single call
 - Lazily initialize and manage write status based on returned AppendResult
 - Use FSUtils.getFileSize() to set final file size, consistent with other handles
 - Added tests around returned values in AppendResult
 - Added validation of the file sizes returned in write stat

Co-authored-by: Vinoth Chandar <vinoth@apache.org>

[HUDI-1418] Set up flink client unit test infra (apache#2281)

[MINOR] Sync UpsertPartitioner modify of HUDI-1398 to flink/java (apache#2390)

Co-authored-by: zhang wen <wen.zhang@dmall.com>

[HUDI-1423] Support delete in hudi-java-client (apache#2353)

[MINOR] Add maven profile to support skipping shade sources jars (apache#2358)

Co-authored-by: Xi Chen <chenxi07@qiyi.com>

[HUDI-842] Implementation of HUDI RFC-15.

 - Introduced an internal metadata table, that stores file listings.
 - metadata table is kept upto date with
 - Fixed handling of CleanerPlan.
 - [HUDI-842] Reduce parallelism to speed up the test.
 - [HUDI-842] Implementation of CLI commands for metadata operations and lookups.
 - [HUDI-842] Extend rollback metadata to include the files which have been appended to.
 - [HUDI-842] Support for rollbacks in MOR Table.
 - MarkerBasedRollbackStrategy needs to correctly provide the list of files for which rollback blocks were appended.
 - [HUDI-842] Added unit test for rollback of partial commits (inflight but not completed yet).
 - [HUDI-842] Handled the error case where metadata update succeeds but dataset commit fails.
 - [HUDI-842] Schema evolution strategy for Metadata Table. Each type of metadata saved (FilesystemMetadata, ColumnIndexMetadata, etc.) will be a separate field with default null. The type of the record will identify the valid field. This way, we can grow the schema when new type of information is saved within in which still keeping it backward compatible.
 - [HUDI-842] Fix non-partitioned case and speedup initial creation of metadata table.Choose only 1 partition for jsc as the number of records is low (hundreds to thousands). There is more overhead of creating large number of partitions for JavaRDD and it slows down operations like WorkloadProfile.
For the non-partitioned case, use "." as the name of the partition to prevent empty keys in HFile.
 - [HUDI-842] Reworked metrics pusblishing.
 - Code has been split into reader and writer side. HoodieMetadata code to be accessed by using HoodieTable.metadata() to get instance of metdata for the table.
Code is serializable to allow executors to use the functionality.
 - [RFC-15] Add metrics to track the time for each file system call.
 - [RFC-15] Added a distributed metrics registry for spark which can be used to collect metrics from executors. This helps create a stats dashboard which shows the metadata table improvements in real-time for production tables.
 - [HUDI-1321] Created HoodieMetadataConfig to specify configuration for the metadata table. This is safer than full-fledged properties for the metadata table (like HoodieWriteConfig) as it makes burdensome to tune the metadata. With limited configuration, we can control the performance of the metadata table closely.

[HUDI-1319][RFC-15] Adding interfaces for HoodieMetadata, HoodieMetadataWriter (apache#2266)
 - moved MetadataReader to HoodieBackedTableMetadata, under the HoodieTableMetadata interface
 - moved MetadataWriter to HoodieBackedTableMetadataWriter, under the HoodieTableMetadataWriter
 - Pulled all the metrics into HoodieMetadataMetrics
 - Writer now wraps the metadata, instead of extending it
 - New enum for MetadataPartitionType
 - Streamlined code flow inside HoodieBackedTableMetadataWriter w.r.t initializing metadata state
 - [HUDI-1319] Make async operations work with metadata table (apache#2332)
 - Changes the syncing model to only move over completed instants on data timeline
 - Syncing happens postCommit and on writeClient initialization
 - Latest delta commit on the metadata table is sufficient as the watermark for data timeline archival
 - Cleaning/Compaction use a suffix to the last instant written to metadata table, such that we keep the 1-1
 - .. mapping between data and metadata timelines.
 - Got rid of a lot of the complexity around checking for valid commits during open of base/log files
 - Tests now use local FS, to simulate more failure scenarios
 - Some failure scenarios exposed HUDI-1434, which is needed for MOR to work correctly

co-authored by: Vinoth Chandar <vinoth@apache.org>

[HUDI-1450] Use metadata table for listing in HoodieROTablePathFilter (apache#2326)

[HUDI-1394] [RFC-15] Use metadata table (if present) to get all partition paths (apache#2351)

[HUDI-1469] Faster initialization of metadata table using parallelized listing. (apache#2343)

 * [HUDI-1469] Faster initialization of metadata table using parallelized listing which finds partitions and files in a single scan.
 * MINOR fixes

Co-authored-by: Vinoth Chandar <vinoth@apache.org>

[HUDI-1325] [RFC-15] Merge updates of unsynced instants to metadata table (apache#2342)

[RFC-15] Fix partition key in metadata table when bootstrapping from file system (apache#2387)

Co-authored-by: Ryan Pifer <ryanpife@amazon.com>

[HUDI-1312] [RFC-15] Support for metadata listing for snapshot queries through Hive/SparkSQL (apache#2366)

Co-authored-by: Ryan Pifer <ryanpife@amazon.com>

[HUDI-1504] Allow log files generated during restore/rollback to be synced as well

 - TestHoodieBackedMetadata#testSync etc now run for MOR tables
 - HUDI-1502 is still pending and has issues for MOR/rollbacks
 - Also addressed bunch of code review comments.

[HUDI-1498] Read clustering plan from requested file for inflight instant (apache#2389)

[HUDI-1506] Fix wrong exception thrown in HoodieAvroUtils (apache#2405)

[HUDI-1383] Fixing sorting of partition vals for hive sync computation (apache#2402)

[HUDI-1507] Change timeline utils to support reading replacecommit metadata (apache#2407)

[MINOR] Rename unit test package of hudi-spark3 from scala to java (apache#2411)

[HUDI-1513] Introduce WriteClient#preWrite() and relocate metadata table syncing (apache#2413)

- Syncing to metadata table, setting operation type, starting async cleaner done in preWrite()
 - Fixes an issues where delete() was not starting async cleaner correctly
 - Fixed tests and enabled metadata table for TestAsyncCompaction

[HUDI-1510] Move HoodieEngineContext and its dependencies to hudi-common (apache#2410)

[MINOR] Sync HUDI-1196 to  FlinkWriteHelper (apache#2415)

[HUDI-1514] Avoid raw type use for parameter of Transformer interface (apache#2420)

[HUDI-920] Support Incremental query for MOR table (apache#1938)

[HUDI-1276] [HUDI-1459] Make Clustering/ReplaceCommit and Metadata table be compatible (apache#2422)

* [HUDI-1276] [HUDI-1459] Make Clustering/ReplaceCommit and Metadata table be compatible

* Use filesystemview and json format from metadata. Add tests

Co-authored-by: Satish Kotha <satishkotha@uber.com>

[HUDI-1399] support a independent clustering spark job to asynchronously clustering (apache#2379)

* [HUDI-1481]  add  structured streaming and delta streamer clustering unit test

* [HUDI-1399] support a independent clustering spark job to asynchronously clustering

* [HUDI-1399]  support a  independent clustering spark job to asynchronously clustering

* [HUDI-1498] Read clustering plan from requested file for inflight instant (apache#2389)

* [HUDI-1399]  support  a independent clustering spark job with schedule generate instant time

Co-authored-by: satishkotha <satishkotha@uber.com>

[MINOR] fix spark 3 build for incremental query on MOR (apache#2425)

[HUDI-1479] Use HoodieEngineContext to parallelize fetching of partiton paths (apache#2417)

* [HUDI-1479] Use HoodieEngineContext to parallelize fetching of partition paths

* Adding testClass for FileSystemBackedTableMetadata

Co-authored-by: Nishith Agarwal <nagarwal@uber.com>

[HUDI-1520] add configure for spark sql overwrite use INSERT_OVERWRITE_TABLE (apache#2428)

[HUDI-1502] MOR rollback and restore support for metadata sync (apache#2421)

- Adds field to RollbackMetadata that capture the logs written for rollback blocks
- Adds field to RollbackMetadata that capture new logs files written by unsynced deltacommits

Co-authored-by: Vinoth Chandar <vinoth@apache.org>

Reviewers: O955 Project Hoodie Project Reviewer: Add blocking reviewers!, PHID-PROJ-pxfpotkfgkanblb3detq!, #ldap_hudi, modi

Reviewed By: #ldap_hudi, modi

Differential Revision: https://code.uberinternal.com/D5347141
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