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https://issues.apache.org/jira/browse/FLUME-2946?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15368864#comment-15368864
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Mike Percy commented on FLUME-2946:
-----------------------------------
Hi @jayadeepj, would you be willing to provide a patch?
> AtomicIncrement List Null CHeck
> -------------------------------
>
> Key: FLUME-2946
> URL: https://issues.apache.org/jira/browse/FLUME-2946
> Project: Flume
> Issue Type: Bug
> Components: Sinks+Sources
> Affects Versions: v1.6.0
> Reporter: jayadeepj
> Priority: Minor
>
> If I use custom serializer implementing
> org.apache.flume.sink.hbase.AsyncHbaseEventSerializer; , without any
> AtomicIncrements i.e getIncrements() returning null, I get the below
> exception.
> 2016-07-06 10:21:34,068 ERROR org.apache.flume.SinkRunner: Unable to deliver
> event. Exception follows.
> java.lang.NullPointerException
> at
> org.apache.flume.sink.hbase.AsyncHBaseSink.process(AsyncHBaseSink.java:227)
> at
> org.apache.flume.sink.DefaultSinkProcessor.process(DefaultSinkProcessor.java:68)
> at org.apache.flume.SinkRunner$PollingRunner.run(SinkRunner.java:147)
> at java.lang.Thread.run(Thread.java:745)
> I guess since Atomic Increments are optional, it should be null checked in
> AsyncHBaseSink.java between
> “ List<AtomicIncrementRequest> increments = serializer.getIncrements();
> …..
> callbacksExpected.addAndGet(increments.size());”
> Custom serializers shouldn’t have to return empty lists
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