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https://issues.apache.org/jira/browse/KAFKA-3133?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15146684#comment-15146684
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ASF GitHub Bot commented on KAFKA-3133:
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GitHub user kichristensen opened a pull request:
https://github.com/apache/kafka/pull/912
KAFKA-3133: Add putIfAbsent function to KeyValueStore
@guozhangwang
You can merge this pull request into a Git repository by running:
$ git pull https://github.com/kichristensen/kafka KAFKA-3133
Alternatively you can review and apply these changes as the patch at:
https://github.com/apache/kafka/pull/912.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 #912
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commit db38597a9b14c6a9acd2f1f952b2a6b12bf4f3c8
Author: Kim Christensen <k...@mvno.dk>
Date: 2016-02-14T18:38:30Z
Add putIfAbsent function to KeyValueStore
----
> Add putIfAbsent function to KeyValueStore
> -----------------------------------------
>
> Key: KAFKA-3133
> URL: https://issues.apache.org/jira/browse/KAFKA-3133
> Project: Kafka
> Issue Type: Sub-task
> Reporter: Guozhang Wang
>
> Since a local store will only be accessed by a single stream thread, there is
> no atomicity concerns and hence this API should be easy to add.
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