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DataFusion Comet 0.7.0 Changelog

This release consists of 46 commits from 11 contributors. See credits at the end of this changelog for more information.

Fixed bugs:

  • fix: Change default value of COMET_SCAN_ALLOW_INCOMPATIBLE and add documentation #1398 (andygrove)
  • fix: Reduce cast.rs and utils.rs logic from parquet_support.rs for experimental native scans #1387 (mbutrovich)
  • fix: Remove more cast.rs logic from parquet_support.rs for experimental native scans #1413 (mbutrovich)
  • fix: fix various unit test failures in native_datafusion and native_iceberg_compat readers #1415 (parthchandra)
  • fix: metrics tests for native_datafusion experimental native scan #1445 (mbutrovich)
  • fix: Reduce number of shuffle spill files, fix spilled_bytes metric, add some unit tests #1440 (andygrove)
  • fix: Executor memory overhead overriding #1462 (LukMRVC)
  • fix: Stop copying rust-toolchain to docker file #1475 (andygrove)
  • fix: PartitionBuffers should not have their own MemoryConsumer #1496 (EmilyMatt)
  • fix: enable full decimal to decimal support #1385 (himadripal)
  • fix: use common implementation of handling object store and hdfs urls for native_datafusion and native_iceberg_compat #1494 (parthchandra)
  • fix: Simplify CometShuffleMemoryAllocator logic, rename classes, remove config #1485 (mbutrovich)
  • fix: check overflow for decimal integral division #1512 (wForget)

Performance related:

  • perf: Update RewriteJoin logic to choose optimal build side #1424 (andygrove)
  • perf: Reduce native shuffle memory overhead by 50% #1452 (andygrove)

Implemented enhancements:

  • feat: CometNativeScan metrics from ParquetFileMetrics and FileStreamMetrics #1172 (mbutrovich)
  • feat: add experimental remote HDFS support for native DataFusion reader #1359 (comphead)
  • feat: add Win-amd64 profile #1410 (wForget)
  • feat: Support IntegralDivide function #1428 (wForget)
  • feat: Add div operator for fuzz testing and update expression doc #1464 (wForget)
  • feat: Upgrade to DataFusion 46.0.0-rc2 #1423 (andygrove)
  • feat: Add support for rpad #1470 (andygrove)
  • feat: Use official DataFusion 46.0.0 release #1484 (andygrove)

Documentation updates:

  • docs: Add changelog for 0.6.0 release #1402 (andygrove)
  • docs: Improve documentation for running stability plan tests #1469 (andygrove)

Other:

  • test: Add experimental native scans to CometReadBenchmark #1150 (mbutrovich)
  • chore: Prepare for 0.7.0 development #1404 (andygrove)
  • chore: Update released version in documentation #1418 (andygrove)
  • chore: Update protobuf to 3.25.5 #1434 (kazuyukitanimura)
  • chore: Update guava to 33.2.1-jre #1435 (kazuyukitanimura)
  • test: Register Spark-compatible expressions with a DataFusion context #1432 (viczsaurav)
  • chore: fixes for kube build #1421 (comphead)
  • build: pin machete to version 0.7.0 #1444 (andygrove)
  • chore: Re-organize shuffle writer code #1439 (andygrove)
  • chore: faster maven mirror #1447 (comphead)
  • build: Use stable channel in rust-toolchain #1465 (andygrove)
  • Feat: support array_compact function #1321 (kazantsev-maksim)
  • chore: Upgrade to Spark 3.5.4 #1471 (andygrove)
  • chore: Enable CI checks for native_datafusion scan #1479 (andygrove)
  • chore: Add native_iceberg_compat CI checks #1487 (andygrove)
  • chore: Stop disabling readside padding in TPC stability suite #1491 (andygrove)
  • chore: Remove num partitions from repartitioner #1498 (EmilyMatt)
  • test: fix Spark 3.5 tests #1482 (kazuyukitanimura)
  • minor: Remove hard-coded config default #1503 (andygrove)
  • chore: Use Datafusion's existing empty stream #1517 (EmilyMatt)

Credits

Thank you to everyone who contributed to this release. Here is a breakdown of commits (PRs merged) per contributor.

    20	Andy Grove
     6	Matt Butrovich
     4	Zhen Wang
     3	Emily Matheys
     3	KAZUYUKI TANIMURA
     3	Oleks V
     2	Himadri Pal
     2	Parth Chandra
     1	Kazantsev Maksim
     1	Lukas Moravec
     1	Saurav Verma

Thank you also to everyone who contributed in other ways such as filing issues, reviewing PRs, and providing feedback on this release.