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KAFKA-8326: Introduce List Serde#6592

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ableegoldman merged 49 commits intoapache:trunkfrom
yeralin:introduce_list_serde
May 13, 2021
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KAFKA-8326: Introduce List Serde#6592
ableegoldman merged 49 commits intoapache:trunkfrom
yeralin:introduce_list_serde

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@yeralin yeralin commented Apr 17, 2019 •
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Introduce List serde for primitive types or custom serdes with a serializer and a deserializer according to https://cwiki.apache.org/confluence/display/KAFKA/KIP-466:+Add+support+for+List%3CT%3E+serialization+and+deserialization

Test cases for the new serde will be added once the PR is reviewed by repo maintainers.

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yeralin commented Apr 17, 2019 •
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Usage: new ListSerde<>(Serdes.String()) to create a serde for List<String> values

@yeralin yeralin changed the title Introduce list serde [MINOR] Introduce list serde Apr 22, 2019
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yeralin commented Apr 22, 2019

@mjsax

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mjsax commented Apr 22, 2019

Thanks a lot for the PR @yeralin! I like the idea and think it's a good addition.

However, adding those classes is a public API change and not a MINOR PR. Thus, it should be backed by a JIRA ticket and it also requires a KIP: https://cwiki.apache.org/confluence/display/KAFKA/Kafka+Improvement+Proposals

Let me know if you have any question about the KIP process (should actually be well document in the wiki), or if you need any other assistance.

Btw: You should also add unit tests :)

@yeralin yeralin changed the title [MINOR] Introduce list serde [KIP-466] Introduce list serde May 6, 2019
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mjsax commented May 6, 2019

Great to see some progress on this PR, but we still need a KIP... I would recommend to work on the KIP first (or in parallel), @yeralin

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yeralin commented May 6, 2019

@mjsax KIP, JIRA, and DISCUSS thread are started: https://cwiki.apache.org/confluence/display/KAFKA/KIP-466%3A+Add+support+for+List%3CT%3E+serialization+and+deserialization

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yeralin commented May 13, 2019

Hmmm, strange I added a test case, but it still says that test results were not found

@mjsax mjsax changed the title [KIP-466] Introduce list serde KAFKA-8326: Introduce List Serde May 24, 2019
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Some nits. I also replied to the KIP discuss thread.

@mjsax mjsax added the streams label Jun 21, 2019
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Some initial comments.

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Some more comments.

I think we also need tests for the new configuration parameters to make sure they work correctly.

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yeralin commented Jul 31, 2019

Any updates on this?

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Seems you did not push an update yet. Stopped reviewing when I realized it.

The PR also need to be rebased to resolve conflict. Can review again, after it's updated.

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yeralin commented Jul 31, 2019 •
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@mjsax Sorry, I thought to finish all the discussions first, that's why I did not push.
New commit is in place! 😄

UPD: Merged with apache:trunk

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Stopped reviewing at this point -- there is too much noise in this PR. Avoid to change unrelated files -- it makes reviewing tedious. Please revert all changes to unrelated files (feel free to do a separate cleanup PR if you wish, but don't piggy-back random cleanups)

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yeralin commented Aug 5, 2019 •
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Hey, I'm sorry I thought you wanted me to merge with trunk that's why so many files popped up.

I think I know how to resolve this. I'll force push before the merge, and then keep pushing my commits only related to introduce_list_serde work. And at the end, once all reviews are completed, I'll do the final merge and we can close this PR.

UPD: Ok @mjsax it should be much cleaner now :)

@yeralin yeralin force-pushed the introduce_list_serde branch from 70d382b to b4e5449 Compare May 12, 2021 16:56
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yeralin commented May 12, 2021

Ok, updated the KIP with serializing nulls for different strategies.

@yeralin yeralin force-pushed the introduce_list_serde branch from b4e5449 to e7c7789 Compare May 12, 2021 18:48
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Looking good, I think once you just move the upgrade guide docs to the 3.0 section then we can merge.

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LGTM. Just give me a ping when the build completes with tests passing (your tests, at least -- there will almost certainly be some unrelated failures, as a handful of tests are super flaky at the moment)

Review changes
37569c9 
Reword statements

Simplify deserialization logic
@yeralin yeralin force-pushed the introduce_list_serde branch from f3efeb2 to 37569c9 Compare May 13, 2021 20:14
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yeralin commented May 13, 2021

@ableegoldman Seems like all checks passed :)

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ableegoldman commented May 13, 2021

Build has only some unrelated test failures in known flaky KTableKTableForeignKeyInnerJoinMultiIntegrationTest#shouldInnerJoinMultiPartitionQueryable and
RaftClusterTest

@ableegoldman ableegoldman merged commit 6d1ae8b into apache:trunk May 13, 2021
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ableegoldman commented May 13, 2021

Merged to trunk! Thanks @yeralin for all the work and patience it took to get this PR in, and to all the reviewers who helped get it here along the way.

@yeralin, can you update the KIP to note that it's completed, and then move this KIP to the "Adopted" section on both the KIP main page and the Streams KIPs subpage? 🙏

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mjsax commented May 14, 2021

Thanks @yeralin for pushing it through and thanks @ableegoldman for helping out reviewing! Really nice addition!

@yeralin yeralin deleted the introduce_list_serde branch May 14, 2021 13:36
ijuma added a commit to ijuma/kafka that referenced this pull request May 16, 2021
@ijuma
Merge remote-tracking branch 'apache-github/trunk' into reduce-produc…
00c29d0 
…e-allocations-lz4

* apache-github/trunk: (155 commits)
  KAFKA-12728: Upgrade gradle to 7.0.2 and shadow to 7.0.0 (apache#10606)
  KAFKA-12778: Fix QuorumController request timeouts and electLeaders (apache#10688)
  KAFKA-12754: Improve endOffsets for TaskMetadata (apache#10634)
  Rework on KAFKA-3968: fsync the parent directory of a segment file when the file is created (apache#10680)
  MINOR: set replication.factor to 1 to make StreamsBrokerCompatibilityService work with old broker (apache#10673)
  MINOR: prevent cleanup() from being called while Streams is still shutting down (apache#10666)
  KAFKA-8326: Introduce List Serde (apache#6592)
  KAFKA-12697: Add Global Topic and Partition count metrics to the Quorum Controller (apache#10679)
  KAFKA-12648: MINOR - Add TopologyMetadata.Subtopology class for subtopology metadata (apache#10676)
  MINOR: Update jacoco to 0.8.7 for JDK 16 support (apache#10654)
  MINOR: exclude all `src/generated` and `src/generated-test` (apache#10671)
  KAFKA-12772: Move all transaction state transition rules into their states (apache#10667)
  KAFKA-12758 Added `server-common` module to have server side common classes.  (apache#10638)
  MINOR Removed copying storage libraries specifically as they are already copied. (apache#10647)
  KAFKA-5876: KIP-216 Part 4, Apply InvalidStateStorePartitionException for Interactive Queries (apache#10657)
  KAFKA-12747: Fix flakiness in shouldReturnUUIDsWithStringPrefix (apache#10643)
  MINOR: remove unnecessary placeholder from WorkerSourceTask#recordSent (apache#10659)
  MINOR: Remove unused `scalatest` definition from `dependencies.gradle` (apache#10655)
  MINOR: checkstyle version upgrade: 8.20 -> 8.36.2 (apache#10656)
  KAFKA-12464: minor code cleanup and additional logging in constrained sticky assignment (apache#10645)
  ...
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venkatesh010 commented Jun 22, 2023

Hey @yeralin @mjsax @ableegoldman Getting SerializationException in this serde
SerializationException: Invalid serialization strategy flag value

Flag value is derived from bytes size (which is coming >2) which is amount of enum variables hence its breaking
seems to be a bug

please check

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venkatesh010 commented Jun 22, 2023

This is while using List where E is class which is Inner
Serde used for Inner is JsonSerde of Type E

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yeralin commented Jun 23, 2023

@venkatesh010 could you please provide a code snippet?

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