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https://issues.apache.org/jira/browse/KYLIN-5009?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17378963#comment-17378963
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ASF GitHub Bot commented on KYLIN-5009:
---------------------------------------

hit-lacus merged pull request #1667:
URL: https://github.com/apache/kylin/pull/1667


   


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> stream segment can't be submit After the coordinator leader is changed
> ----------------------------------------------------------------------
>
>                 Key: KYLIN-5009
>                 URL: https://issues.apache.org/jira/browse/KYLIN-5009
>             Project: Kylin
>          Issue Type: Bug
>          Components: Real-time Streaming
>            Reporter: Kun Liu
>            Assignee: Kun Liu
>            Priority: Minor
>         Attachments: screenshot-1.png, screenshot-2.png
>
>
> Env:
> 2 coordinator node: node-0,node-1
> When the leader was changed to the node-0, the stream segment building job 
> can't be submitted.
>  
> The remote persisted segment can't be deleted.  !_thumb_2451528.png|thumbnail!
> Find the error log in the coordinator leader node:
> ```
> 2021-06-10 00:01:41,601 INFO [streaming_job_submitter-thread-1] 
> coordinate.BuildJobSubmitter:203 : The cube: xxxxxxxxx  
> segment:20210603080000_20210603090000 is ready to be promoted.
>  2021-06-10 00:01:41,601 ERROR [streaming_job_submitter-thread-1] 
> coordinate.BuildJobSubmitter:136 : Unexpected error
>  java.lang.NullPointerException
>  at 
> org.apache.kylin.stream.coordinator.coordinate.ReceiverClusterManager.checkPreviousSegmentReady(ReceiverClusterManager.java:626)
>  at 
> org.apache.kylin.stream.coordinator.coordinate.ReceiverClusterManager.segmentBuildComplete(ReceiverClusterManager.java:520)
>  at 
> org.apache.kylin.stream.coordinator.coordinate.BuildJobSubmitter.traceEarliestSegmentBuildJob(BuildJobSubmitter.java:205)
>  at 
> org.apache.kylin.stream.coordinator.coordinate.BuildJobSubmitter.doRun(BuildJobSubmitter.java:145)
>  at 
> org.apache.kylin.stream.coordinator.coordinate.BuildJobSubmitter.run(BuildJobSubmitter.java:133)
>  at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511)
>  at java.util.concurrent.FutureTask.runAndReset(FutureTask.java:308)
>  at 
> java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$301(ScheduledThreadPoolExecutor.java:180)
>  at 
> java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:294)
>  at 
> java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149)
>  at 
> java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624)
>  at java.lang.Thread.run(Thread.java:748)
> ```
> In the frontend, there is no the segment 
> !_thumb_2451527.png|thumbnail!
>  
>  



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