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https://issues.apache.org/jira/browse/KAFKA-6300?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16275796#comment-16275796
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ASF GitHub Bot commented on KAFKA-6300:
---------------------------------------
GitHub user tedyu opened a pull request:
https://github.com/apache/kafka/pull/4288
KAFKA-6300 SelectorTest may fail with ConcurrentModificationException
Synchronization is added w.r.t. sockets ArrayList to avoid
ConcurrentModificationException
### Committer Checklist (excluded from commit message)
- [ ] Verify design and implementation
- [ ] Verify test coverage and CI build status
- [ ] Verify documentation (including upgrade notes)
You can merge this pull request into a Git repository by running:
$ git pull https://github.com/tedyu/kafka trunk
Alternatively you can review and apply these changes as the patch at:
https://github.com/apache/kafka/pull/4288.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 #4288
----
commit 8943cc9a39f297dacf091e8e02c09b44f6b9a6fe
Author: tedyu <yuzhih...@gmail.com>
Date: 2017-12-03T00:13:37Z
KAFKA-6300 SelectorTest may fail with ConcurrentModificationException
----
> SelectorTest may fail with ConcurrentModificationException
> ----------------------------------------------------------
>
> Key: KAFKA-6300
> URL: https://issues.apache.org/jira/browse/KAFKA-6300
> Project: Kafka
> Issue Type: Test
> Reporter: Ted Yu
> Priority: Minor
>
> From
> https://builds.apache.org/job/kafka-trunk-jdk8/2255/testReport/junit/org.apache.kafka.common.network/SelectorTest/testImmediatelyConnectedCleaned/
> :
> {code}
> java.util.ConcurrentModificationException
> at java.util.ArrayList$Itr.checkForComodification(ArrayList.java:909)
> at java.util.ArrayList$Itr.next(ArrayList.java:859)
> at
> org.apache.kafka.common.network.EchoServer.closeConnections(EchoServer.java:115)
> at org.apache.kafka.common.network.EchoServer.close(EchoServer.java:121)
> at
> org.apache.kafka.common.network.SelectorTest.tearDown(SelectorTest.java:95)
> {code}
> It seems sockets ArrayList was modified during closing.
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