Hi all,

We found an issue https://github.com/apache/pulsar/issues/14436,
This may be a new problem introduced in 2.10.0, need to confirm
the issue and rollout the new RC.

Thanks,
Penghui

On Wed, Mar 2, 2022 at 9:20 PM PengHui Li <peng...@apache.org> wrote:

> Thanks Lari,
>
> I have cherry-picked https://github.com/apache/pulsar/pull/14524 into
> branch-2.10 and will
> send out the new RC tomorrow.
>
> Penghui
>
> On Wed, Mar 2, 2022 at 8:30 PM Lari Hotari <lhot...@apache.org> wrote:
>
>> -1
>>
>> There was a thread leak in MLTransactionMetadataStore which also impacts
>> production code.
>> It is fixed by https://github.com/apache/pulsar/pull/14524 which is now
>> merged to master branch. The thread leak resulted in a memory leak in tests
>> and that's how I noticed it.
>>
>> The thread leak was also visible in test output. In Pulsar tests we have
>> a detector for thread leaks, it is
>> https://github.com/apache/pulsar/blob/master/buildtools/src/main/java/org/apache/pulsar/tests/ThreadLeakDetectorListener.java
>> . It will log threads that are active when the test ends. For example, when
>> running
>>
>> mvn -DredirectTestOutputToFile=false -DtestRetryCount=0 test
>> -Pcore-modules -pl pulsar-broker -DexcludedGroups=
>> -Dtest=ReplicatorTest#testDoNotReplicateSystemTopic
>>
>> The leak detector logs warnings to the console:
>>
>> [INFO] [stdout] 2022-03-02T13:37:21,120+0200 [main] WARN
>> org.apache.pulsar.tests.ThreadLeakDetectorListener - Tests in class
>> ReplicatorTest created thread id 1407 with name
>> 'Thread[transaction_coordinator_TransactionCoordinatorID(id=0)thread_factory-468-1,5,main]'
>> [INFO] [stdout] 2022-03-02T13:37:21,120+0200 [main] WARN
>> org.apache.pulsar.tests.ThreadLeakDetectorListener - Tests in class
>> ReplicatorTest created thread id 1406 with name
>> 'Thread[transaction_coordinator_TransactionCoordinatorID(id=1)thread_factory-467-1,5,main]'
>>
>> I hope this helps catch similar issues in the future earlier.
>>
>> -Lari
>>
>> On 2022/03/01 12:35:04 PengHui Li wrote:
>> > This is the second release candidate for Apache Pulsar 2.10.0
>> >
>> > It fixes the following issues:
>> > https://github.com/apache/pulsar/pulls?q=is%3Apr+milestone%3A2.10.0
>> > +is%3Amerged+-label%3Arelease%2F2.9.1+-label%3Arelease%2F2.9.2
>> >
>> > *** Please download, test and vote on this release. This vote will stay
>> open
>> > for at least 72 hours ***
>> >
>> > Note that we are voting upon the source (tag), binaries are provided for
>> > convenience.
>> >
>> > Source and binary files:
>> >
>> https://dist.apache.org/repos/dist/dev/pulsar/pulsar-2.10.0-candidate-2/
>> >
>> > SHA-512 checksums:
>> >
>> >
>> 6fde1a547bb0f6b640afaaf5480f45b47b89000f9b6cd85cd00984f8078909d185e52ee753de49cf631ab0097d8785f5c52bcd953b3c0762e3df074aa8b0280f
>> >  apache-pulsar-
>> > 2.10.0-bin.tar.gz
>> >
>> >
>> a879be88f9605350f2851b815bff5013124c948e9b614f5e0e91c909ba7cba0c67920d705f97e3ae8b278e5354971e2ddda6a7d77dd788b0a448f8ade35510e8
>> >  apache-pulsar-
>> > 2.10.0-src.tar.gz
>> >
>> > Maven staging repo:
>> >
>> https://repository.apache.org/content/repositories/orgapachepulsar-1144/
>> >
>> > The tag to be voted upon:
>> > v2.10.0-candidate-2 (43a9b6fe9f5bca055acfefe144cd78dd29c614ba)
>> > https://github.com/apache/pulsar/releases/tag/v2.10.0-candidate-2
>> >
>> > Pulsar's KEYS file containing PGP keys we use to sign the release:
>> > https://dist.apache.org/repos/dist/dev/pulsar/KEYS
>> >
>> > Docker images:
>> >
>> >
>> https://hub.docker.com/layers/194902199/lph890127/pulsar/2.10.0-rc2/images/sha256-75af729b88c2a63193a4414ca10fc97f7092bf83abe30a37c3d57bef9287e9b2?context=repo
>> >
>> >
>> https://hub.docker.com/layers/194901702/lph890127/pulsar-all/2.10.0-rc2/images/sha256-22155d193897029d74faa7a95098fa15198984809b9aa3decd5b961be66437ff?context=repo
>> >
>> > Please download the source package, and follow the Release Candidate
>> > Validation[1]
>> > to validate the release
>> >
>> > [1] https://github.com/apache/pulsar/wiki/Release-Candidate-Validation
>> >
>> > Thanks,
>> > Penghui
>> >
>>
>

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