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hudi/RELEASE_NOTES.md
2019-02-27 06:47:56 -08:00

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Release 0.4.5
------------------------------------
### Highlights
* Dockerized demo with support for different Hive versions
* Smoother handling of append log on cloud stores
* Introducing a global bloom index, that enforces unique constraint across partitions
* CLI commands to analyze workloads, manage compactions
* Migration guide for folks wanting to move datasets to Hudi
* Added Spark Structured Streaming support, with a Hudi sink
* In-built support for filtering duplicates in DeltaStreamer
* Support for plugging in custom transformation in DeltaStreamer
* Better support for non-partitioned Hive tables
* Support hard deletes for Merge on Read storage
* New slack url & site urls
* Added presto bundle for easier integration
* Tons of bug fixes, reliability improvements
### Full PR List
* **@bhasudha** - Create hoodie-presto bundle jar. fixes #567 #571
* **@bhasudha** - Close FSDataInputStream for meta file open in HoodiePartitionMetadata . Fixes issue #573 #574
* **@yaoqinn** - handle no such element exception in HoodieSparkSqlWriter #576
* **@vinothchandar** - Update site url in README
* **@yaooqinn** - typo: bundle jar with unrecognized variables #570
* **@bvaradar** - Table rollback for inflight compactions MUST not delete instant files at any time to avoid race conditions #565
* **@bvaradar** - Fix Hoodie Record Reader to work with non-partitioned dataset ( ISSUE-561) #569
* **@bvaradar** - Hoodie Delta Streamer Features : Transformation and Hoodie Incremental Source with Hive integration #485
* **@vinothchandar** - Updating new slack signup link #566
* **@yaooqinn** - Using immutable map instead of mutables to generate parameters #559
* **@n3nash** - Fixing behavior of buffering in Create/Merge handles for invalid/wrong schema records #558
* **@n3nash** - cleaner should now use commit timeline and not include deltacommits #539
* **@n3nash** - Adding compaction to HoodieClient example #551
* **@n3nash** - Filtering partition paths before performing a list status on all partitions #541
* **@n3nash** - Passing a path filter to avoid including folders under .hoodie directory as partition paths #548
* **@n3nash** - Enabling hard deletes for MergeOnRead table type #538
* **@msridhar** - Add .m2 directory to Travis cache #534
* **@artem0** - General enhancements #520
* **@bvaradar** - Ensure Hoodie works for non-partitioned Hive table #515
* **@xubo245** - fix some spell errorin Hudi #530
* **@leletan** - feat(SparkDataSource): add structured streaming sink #486
* **@n3nash** - Serializing the complete payload object instead of serializing just the GenericRecord in HoodieRecordConverter #495
* **@n3nash** - Returning empty Statues for an empty spark partition caused due to incorrect bin packing #510
* **@bvaradar** - Avoid WriteStatus collect() call when committing batch to prevent Driver side OOM errors #512
* **@vinothchandar** - Explicitly handle lack of append() support during LogWriting #511
* **@n3nash** - Fixing number of insert buckets to be generated by rounding off to the closest greater integer #500
* **@vinothchandar** - Enabling auto tuning of insert splits by default #496
* **@bvaradar** - Useful Hudi CLI commands to debug/analyze production workloads #477
* **@bvaradar** - Compaction validate, unschedule and repair #481
* **@shangxinli** - Fix addMetadataFields() to carry over 'props' #484
* **@n3nash** - Adding documentation for migration guide and COW vs MOR tradeoffs #470
* **@leletan** - Add additional feature to drop later arriving dups #468
* **@bvaradar** - Fix regression bug which broke HoodieInputFormat handling of non-hoodie datasets #482
* **@vinothchandar** - Add --filter-dupes to DeltaStreamer #478
* **@bvaradar** - A quickstart demo to showcase Hudi functionalities using docker along with support for integration-tests #455
* **@bvaradar** - Ensure Hoodie metadata folder and files are filtered out when constructing Parquet Data Source #473
* **@leletan** - Adds HoodieGlobalBloomIndex #438
Release 0.4.4
------------------------------------
### Highlights
* Dependencies are now decoupled from CDH and based on apache versions!
* Support for Hive 2 is here!! Use -Dhive11 to build for older hive versions
* Deltastreamer tool reworked to make configs simpler, hardended tests, added Confluent Kafka support
* Provide strong consistency for S3 datasets
* Removed dependency on commons lang3, to ease use with different hadoop/spark versions
* Better CLI support and docs for managing async compactions
* New CLI commands to manage datasets
### Full PR List
* **@vinothchandar** - Perform consistency checks during write finalize #464
* **@bvaradar** - Travis CI tests needs to be run in quieter mode (WARN log level) to avoid max log-size errors #465
* **@lys0716** - Fix the name of avro schema file in Test #467
* **@bvaradar** - Hive Sync handling must work for datasets with multi-partition keys #460
* **@bvaradar** - Explicitly release resources in LogFileReader and TestHoodieClientBase. Fixes Memory allocation errors #463
* **@bvaradar** - [Release Blocking] Ensure packaging modules create sources/javadoc jars #461
* **@vinothchandar** - Fix bug with incrementally pulling older data #458
* **@saravsars** - Updated jcommander version to fix NPE in HoodieDeltaStreamer tool #443
* **@n3nash** - Removing dependency on apache-commons lang 3, adding necessary classes as needed #444
* **@n3nash** - Small file size handling for inserts into log files. #413
* **@vinothchandar** - Update Gemfile.lock with higher ffi version
* **@bvaradar** - Simplify and fix CLI to schedule and run compactions #447
* **@n3nash** - Fix a failing test case intermittenly in TestMergeOnRead due to incorrect prev commit time #448
* **@bvaradar**- CLI to create and desc hoodie table #446
* **@vinothchandar**- Reworking the deltastreamer tool #449
* **@bvaradar**- Docs for describing async compaction and how to operate it #445
* **@n3nash**- Adding check for rolling stats not present in existing timeline to handle backwards compatibility #451
* **@bvaradar** **@vinothchandar** - Moving all dependencies off cdh and to apache #420
* **@bvaradar**- Reduce minimum delta-commits required for compaction #452
* **@bvaradar**- Use spark Master from environment if set #454
Release 0.4.3
------------------------------------
### Highlights
* Ability to run compactions asynchrously & in-parallel to ingestion/write added!!!
* Day based compaction does not respect IO budgets i.e agnostic of them
* Adds ability to throttle writes to HBase via the HBaseIndex
* (Merge on read) Inserts are sent to log files, if they are indexable.
### Full PR List
* **@n3nash** - Adding ability for inserts to be written to log files #400
* **@n3nash** - Fixing bug introducted in rollback for MOR table type with inserts into log files #417
* **@n3nash** - Changing Day based compaction strategy to be IO agnostic #398
* **@ovj** - Changing access level to protected so that subclasses can access it #421
* **@n3nash** - Fixing missing hoodie record location in HoodieRecord when record is read from disk after being spilled #419
* **@bvaradar** - Async compaction - Single Consolidated PR #404
* **@bvaradar** - BUGFIX - Use Guava Optional (which is Serializable) in CompactionOperation to avoid NoSerializableException #435
* **@n3nash** - Adding another metric to HoodieWriteStat #434
* **@n3nash** - Fixing Null pointer exception in finally block #440
* **@kaushikd49** - Throttling to limit QPS from HbaseIndex #427
Release 0.4.2
------------------------------------
### Highlights
* Parallelize Parquet writing & input record read resulting in upto 2x performance improvement
* Better out-of-box configs to support upto 500GB upserts, improved ROPathFilter performance
* Added a union mode for RT View, that supports near-real time event ingestion without update semantics
* Added a tuning guide with suggestions for oft-encountered problems
* New configs for configs for compression ratio, index storage levels
### Full PR List
* **@jianxu** - Use hadoopConf in HoodieTableMetaClient and related tests #343
* **@jianxu** - Add more options in HoodieWriteConfig #341
* **@n3nash** - Adding a tool to read/inspect a HoodieLogFile #328
* **@ovj** - Parallelizing parquet write and spark's external read operation. #294
* **@n3nash** - Fixing memory leak due to HoodieLogFileReader holding on to a logblock #346
* **@kaushikd49** - DeduplicateRecords based on recordKey if global index is used #345
* **@jianxu** - Checking storage level before persisting preppedRecords #358
* **@n3nash** - Adding config for parquet compression ratio #366
* **@xjodoin** - Replace deprecated jackson version #367
* **@n3nash** - Making ExternalSpillableMap generic for any datatype #350
* **@bvaradar** - CodeStyle formatting to conform to basic Checkstyle rules. #360
* **@vinothchandar** - Update release notes for 0.4.1 (post) #371
* **@bvaradar** - Issue-329 : Refactoring TestHoodieClientOnCopyOnWriteStorage and adding test-cases #372
* **@n3nash** - Parallelized read-write operations in Hoodie Merge phase #370
* **@n3nash** - Using BufferedFsInputStream to wrap FSInputStream for FSDataInputStream #373
* **@suniluber** - Fix for updating duplicate records in same/different files in same pa… #380
* **@bvaradar** - Fixit : Add Support for ordering and limiting results in CLI show commands #383
* **@n3nash** - Adding metrics for MOR and COW #365
* **@n3nash** - Adding a fix/workaround when fs.append() unable to return a valid outputstream #388
* **@n3nash** - Minor fixes for MergeOnRead MVP release readiness #387
* **@bvaradar** - Issue-257: Support union mode in HoodieRealtimeRecordReader for pure insert workloads #379
* **@n3nash** - Enabling global index for MOR #389
* **@suniluber** - Added a new filter function to filter by record keys when reading parquet file #395
* **@vinothchandar** - Improving out of box experience for data source #295
* **@xjodoin** - Fix wrong use of TemporaryFolder junit rule #411
Release 0.4.1
------------------------------------
### Highlights
* Good enhancements for merge-on-read write path : spillable map for merging, evolvable log format, rollback support
* Cloud file systems should now work out-of-box for copy-on-write tables, with configs picked up from SparkContext
* Compaction action is no more, multiple delta commits now lead to a commit upon compaction
* API level changes include : compaction api, new prepped APIs for higher plugability for advanced clients
### Full PR List
* **@n3nash** - Separated rollback as a table operation, implement rollback for MOR #247
* **@n3nash** - Implementing custom payload/merge hooks abstractions for application #275
* **@vinothchandar** - Reformat project & tighten code style guidelines #280
* **@n3nash** - Separating out compaction() API #282
* **@n3nash** - Enable hive sync even if there is no compaction commit #286
* **@n3nash** - Partition compaction strategy #281
* **@n3nash** - Removing compaction action type and associated compaction timeline operations, replace with commit action type #288
* **@vinothchandar** - Multi/Cloud FS Support for Copy-On-Write tables #293
* **@vinothchandar** - Update Gemfile.lock #298
* **@n3nash** - Reducing memory footprint required in HoodieAvroDataBlock and HoodieAppendHandle #290
* **@jianxu** - Add FinalizeWrite in HoodieCreateHandle for COW tables #285
* **@n3nash** - Adding global indexing to HbaseIndex implementation #318
* **@n3nash** - Small File Size correction handling for MOR table type #299
* **@jianxu** - Use FastDateFormat for thread safety #320
* **@vinothchandar** - Fix formatting in HoodieWriteClient #322
* **@n3nash** - Write smaller sized multiple blocks to log file instead of a large one #317
* **@n3nash** - Added support for Disk Spillable Compaction to prevent OOM issues #289
* **@jianxu** - Add new APIs in HoodieReadClient and HoodieWriteClient #327
* **@jianxu** - Handle inflight clean instants during Hoodie instants archiving #332
* **@n3nash** - Introducing HoodieLogFormat V2 with versioning support #331
* **@n3nash** - Re-factoring Compaction as first level API in WriteClient similar to upsert/insert #330
Release 0.4.0
------------------------------------
### Highlights
* [Spark datasource API](https://uber.github.io/hoodie/quickstart.html#datasource-api) now supported for Copy-On-Write datasets, across all views
* BloomIndex can now [prune based on key ranges](https://uber.github.io/hoodie/configurations.html#bloomIndexPruneByRanges) & cut down index tagging time dramatically, for time-prefixed/ordered record keys
* Hive sync tool registers RO and RT tables now.
* Client application can now specify the partitioner to be used by bulkInsert(), useful for low-level control over initial record placement
* Framework for metadata tracking inside IO handles, to implement Spark accumulator-style counters, that are consistent with the timeline
* Bug fixes around cleaning, savepoints & upsert's partitioner.
### Full PR List
* **@gekath** - Writes relative paths to .commit files #184
* **@kaushikd49** - Correct clean bug that causes exception when partitionPaths are empty #202
* **@vinothchandar** - Refactor HoodieTableFileSystemView using FileGroups & FileSlices #201
* **@prazanna** - Savepoint should not create a hole in the commit timeline #207
* **@jianxu** - Fix TimestampBasedKeyGenerator in HoodieDeltaStreamer when DATE_STRING is used #211
* **@n3nash** - Sync Tool registers 2 tables, RO and RT Tables #210
* **@n3nash** - Using FsUtils instead of Files API to extract file extension #213
* **@vinothchandar** - Edits to documentation #219
* **@n3nash** - Enabled deletes in merge_on_read #218
* **@n3nash** - Use HoodieLogFormat for the commit archived log #205
* **@n3nash** - fix for cleaning log files in master branch (mor) #228
* **@vinothchandar** - Adding range based pruning to bloom index #232
* **@n3nash** - Use CompletedFileSystemView instead of CompactedView considering deltacommits too #229
* **@n3nash** - suppressing logs (under 4MB) for jenkins #240
* **@jianxu** - Add nested fields support for MOR tables #234
* **@n3nash** - adding new config to separate shuffle and write parallelism #230
* **@n3nash** - adding ability to read archived files written in log format #252
* **@ovj** - Removing randomization from UpsertPartitioner #253
* **@ovj** - Replacing SortBy with custom partitioner #245
* **@esmioley** - Update deprecated hash function #259
* **@vinothchandar** - Adding canIndexLogFiles(), isImplicitWithStorage(), isGlobal() to HoodieIndex #268
* **@kaushikd49** - Hoodie Event callbacks #251
* **@vinothchandar** - Spark Data Source (finally) #266
Previous Releases
------------
* Refer to [github](https://github.com/uber/hoodie/releases)