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https://issues.apache.org/jira/browse/FLINK-6311?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15975645#comment-15975645
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ASF GitHub Bot commented on FLINK-6311:
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Github user zhangminglei commented on the issue:
https://github.com/apache/flink/pull/3738
@StephanEwen @tzulitai Thanks for telling me so useful information. I will
fix it soon enough. Very appreciate it.
> NPE in FlinkKinesisConsumer if source was closed before run
> -----------------------------------------------------------
>
> Key: FLINK-6311
> URL: https://issues.apache.org/jira/browse/FLINK-6311
> Project: Flink
> Issue Type: Bug
> Components: Kinesis Connector
> Reporter: Tzu-Li (Gordon) Tai
> Assignee: mingleizhang
>
> This was reported by an user:
> http://apache-flink-user-mailing-list-archive.2336050.n4.nabble.com/Flink-errors-out-and-job-fails-IOException-from-CollectSink-open-td12606.html
> The {{shutdownFetcher}} method of {{KinesisDataFetcher}} is not protected
> against the condition when the source was closed before it started running.
> Both {{mainThread}} and {{shardConsumersExecutor}} should have null checks.
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