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https://issues.apache.org/jira/browse/KAFKA-4049?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15429595#comment-15429595
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ASF GitHub Bot commented on KAFKA-4049:
---------------------------------------
GitHub user guozhangwang reopened a pull request:
https://github.com/apache/kafka/pull/1746
KAFKA-4049: Fix transient failure in RegexSourceIntegrationTest
You can merge this pull request into a Git repository by running:
$ git pull https://github.com/guozhangwang/kafka
K4049-RegexSourceIntegrationTest-failure
Alternatively you can review and apply these changes as the patch at:
https://github.com/apache/kafka/pull/1746.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 #1746
----
commit e045b977cc5607e72402e64547df773d9bda7a61
Author: Guozhang Wang <wangg...@gmail.com>
Date: 2016-08-16T20:08:27Z
fix transient failure
commit 0f21348e9e48f1e6789060b70b01816cd3baac62
Author: Guozhang Wang <wangg...@gmail.com>
Date: 2016-08-17T22:41:41Z
github comments
commit 33e8e2cd62adb38a0cef266f533110b2f42dafe2
Author: Guozhang Wang <wangg...@gmail.com>
Date: 2016-08-20T17:51:19Z
Merge branch 'trunk' of https://git-wip-us.apache.org/repos/asf/kafka into
K4049-RegexSourceIntegrationTest-failure
commit 75206faee4306184cff8c136556444d60de1358e
Author: Guozhang Wang <wangg...@gmail.com>
Date: 2016-08-21T00:36:33Z
make atomic updates on assignedTopicPartitions
----
> Transient failure in
> RegexSourceIntegrationTest.testRegexMatchesTopicsAWhenDeleted
> ----------------------------------------------------------------------------------
>
> Key: KAFKA-4049
> URL: https://issues.apache.org/jira/browse/KAFKA-4049
> Project: Kafka
> Issue Type: Sub-task
> Components: streams
> Reporter: Guozhang Wang
> Assignee: Guozhang Wang
> Labels: test
>
> There is an hidden assumption in this test case that the created
> {{TEST-TOPIC-A}} and {{TEST-TOPIC-B}} are propagated to the streams client at
> the same time, and stored as {{assignedTopicPartitions[0]}}. However this is
> not always true since these two topics may be added on the client side as two
> consecutive metadata refreshes.
> The proposed fix includes the following:
> 1. In {{waitForCondition}} do not trigger the {{conditionMet}} function again
> after the while loop, but just remember the returned value from the last
> call. This is safer so that if the condition changes after the while loop it
> will not be considered as well.
> 2. Not remembering a map of all the previous assigned partitions, but only
> the most recent one. And also get rid of the final check after streams client
> is closed by just use {{equals}} in the condition to make sure that it is
> exactly the same to the expected assignment.
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