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https://issues.apache.org/jira/browse/KAFKA-3837?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15330751#comment-15330751
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ASF GitHub Bot commented on KAFKA-3837:
---------------------------------------
GitHub user bharatviswa504 opened a pull request:
https://github.com/apache/kafka/pull/1505
KAFKA-3837: Report the thread id of the blocking thread when throwing
ConcurrentModificationException
You can merge this pull request into a Git repository by running:
$ git pull https://github.com/bharatviswa504/kafka KAFKA-3837
Alternatively you can review and apply these changes as the patch at:
https://github.com/apache/kafka/pull/1505.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 #1505
----
commit 3cabc5d2883cb3b611b377750989d65931c282e9
Author: Bharat Viswanadham <bhar...@us.ibm.com>
Date: 2016-06-14T21:37:36Z
KAFKA-3837: Report the thread id of the blocking thread when throwing
ConcurrentModificationException
----
> Report the name of the blocking thread when throwing
> ConcurrentModificationException
> ------------------------------------------------------------------------------------
>
> Key: KAFKA-3837
> URL: https://issues.apache.org/jira/browse/KAFKA-3837
> Project: Kafka
> Issue Type: Improvement
> Components: clients
> Affects Versions: 0.9.0.1
> Reporter: Simon Cooper
> Assignee: Bharat Viswanadham
> Priority: Minor
>
> {{KafkaConsumer.acquire}} throws {{ConcurrentModificationException}} if the
> current thread it does not match the {{currentThread}} field. It would be
> useful if the name of the other thread was included in the exception message
> to help debug the problem when this exception occurs.
> As it stands, it can be really difficult to work out what's going wrong when
> there's several threads all accessing the consumer at the same time, and your
> existing exclusive access logic doesn't seem to be working as it should.
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