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https://issues.apache.org/jira/browse/KAFKA-4996?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15995430#comment-15995430
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ASF GitHub Bot commented on KAFKA-4996:
---------------------------------------
GitHub user amitdaga opened a pull request:
https://github.com/apache/kafka/pull/2966
KAFKA-4996: Fix findbugs multithreaded correctness warnings for streams
You can merge this pull request into a Git repository by running:
$ git pull https://github.com/amitdaga/kafka findbugs-streams-multithread
Alternatively you can review and apply these changes as the patch at:
https://github.com/apache/kafka/pull/2966.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 #2966
----
commit bf7c4cf3588112e8d9518b43ed086aa36588d75f
Author: Amit Daga <ad...@adobe.com>
Date: 2017-04-30T17:58:39Z
Fixing multithread correctness warning in streams
----
> Fix findbugs multithreaded correctness warnings for streams
> -----------------------------------------------------------
>
> Key: KAFKA-4996
> URL: https://issues.apache.org/jira/browse/KAFKA-4996
> Project: Kafka
> Issue Type: Bug
> Components: streams
> Reporter: Colin P. McCabe
> Labels: newbie
>
> Fix findbugs multithreaded correctness warnings for streams
> {code}
> Multithreaded correctness Warnings
>
>
>
>
>
>
>
> Code Warning
>
>
>
> AT Sequence of calls to java.util.concurrent.ConcurrentHashMap may not
> be atomic in
> org.apache.kafka.streams.state.internals.Segments.getOrCreateSegment(long,
> ProcessorContext)
>
> IS Inconsistent synchronization of
> org.apache.kafka.streams.KafkaStreams.stateListener; locked 66% of time
>
>
>
> IS Inconsistent synchronization of
> org.apache.kafka.streams.processor.internals.StreamThread.stateListener;
> locked 66% of time
>
>
> IS Inconsistent synchronization of
> org.apache.kafka.streams.processor.TopologyBuilder.applicationId; locked 50%
> of time
>
>
> IS Inconsistent synchronization of
> org.apache.kafka.streams.state.internals.CachingKeyValueStore.context; locked
> 66% of time
>
>
> IS Inconsistent synchronization of
> org.apache.kafka.streams.state.internals.CachingWindowStore.cache; locked 60%
> of time
>
>
> IS Inconsistent synchronization of
> org.apache.kafka.streams.state.internals.CachingWindowStore.context; locked
> 66% of time
>
>
> IS Inconsistent synchronization of
> org.apache.kafka.streams.state.internals.CachingWindowStore.name; locked 60%
> of time
>
>
> IS Inconsistent synchronization of
> org.apache.kafka.streams.state.internals.CachingWindowStore.serdes; locked
> 70% of time
>
>
> IS Inconsistent synchronization of
> org.apache.kafka.streams.state.internals.RocksDBStore.db; locked 63% of time
>
>
>
> IS Inconsistent synchronization of
> org.apache.kafka.streams.state.internals.RocksDBStore.serdes; locked 76% of
> time
>
>
> {code}
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