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https://issues.apache.org/jira/browse/KAFKA-5231?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16015019#comment-16015019
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ASF GitHub Bot commented on KAFKA-5231:
---------------------------------------
GitHub user guozhangwang opened a pull request:
https://github.com/apache/kafka/pull/3082
KAFKA-5231: Protect txn metadata map with read-write lock
You can merge this pull request into a Git repository by running:
$ git pull https://github.com/guozhangwang/kafka K5231-read-write-lock
Alternatively you can review and apply these changes as the patch at:
https://github.com/apache/kafka/pull/3082.patch
To close this pull request, make a commit to your master/trunk branch
with (at least) the following in the commit message:
This closes #3082
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commit 6b5c6cf6042c61e785e9f005ea0b85ff8e5246c1
Author: Guozhang Wang <wangg...@gmail.com>
Date: 2017-05-16T06:12:12Z
bump up producer epoch
commit b7884d106b8b8c10187b8748f5120728464acfc9
Author: Guozhang Wang <wangg...@gmail.com>
Date: 2017-05-17T00:07:11Z
Jason's comments
commit 8f78d601beb52c90507c1307a5073e8100e98631
Author: Guozhang Wang <wangg...@gmail.com>
Date: 2017-05-17T19:31:07Z
Jun's comments
commit 7c7f4da31191fce9935eecc65b6e3273bae520d1
Author: Guozhang Wang <wangg...@gmail.com>
Date: 2017-05-17T19:52:50Z
bump up limit for class fanout to 40 for Sender class
commit c3aef033207f5f7da5ccc84c5dd6f71165d94f62
Author: Guozhang Wang <wangg...@gmail.com>
Date: 2017-05-17T20:36:05Z
Jun's comments round two
commit ccf8fdc51c7aa066bf2f8098f0906ebf9f937a2d
Author: Guozhang Wang <wangg...@gmail.com>
Date: 2017-05-17T23:44:48Z
rebased from trunk
commit 52ef07b060f59f7e0fe342faa5c040448ed1b2be
Author: Guozhang Wang <wangg...@gmail.com>
Date: 2017-05-17T20:19:20Z
change the state lock to read-write lock
commit dd11d5d457ba09ed5a2a1a0d2d35712a0420b722
Author: Guozhang Wang <wangg...@gmail.com>
Date: 2017-05-17T23:29:22Z
grab the read lock until append to local is done
commit 16c1791236d8bcf851fad93ef1b7a61170f62aa5
Author: Guozhang Wang <wangg...@gmail.com>
Date: 2017-05-18T01:04:18Z
put the validation and return of metadata under the same lock
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> TransactinoCoordinator does not bump epoch when aborting open transactions
> --------------------------------------------------------------------------
>
> Key: KAFKA-5231
> URL: https://issues.apache.org/jira/browse/KAFKA-5231
> Project: Kafka
> Issue Type: Sub-task
> Reporter: Apurva Mehta
> Assignee: Guozhang Wang
> Priority: Blocker
> Labels: exactly-once
> Fix For: 0.11.0.0
>
>
> When the TransactionCoordinator receives an InitPidRequest when there is an
> open transaction for a transactional id, it should first bump the epoch and
> then abort the open transaction.
> Currently, it aborts the open transaction with the existing epoch, hence the
> old producer is never fenced.
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