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From "ASF GitHub Bot (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (FLINK-5276) ExecutionVertex archiving can throw NPE with many previous attempts
Date Wed, 07 Dec 2016 13:29:59 GMT

    [ https://issues.apache.org/jira/browse/FLINK-5276?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15728763#comment-15728763
] 

ASF GitHub Bot commented on FLINK-5276:
---------------------------------------

Github user StefanRRichter commented on the issue:

    https://github.com/apache/flink/pull/2957
  
    LGTM +1


> ExecutionVertex archiving can throw NPE with many previous attempts
> -------------------------------------------------------------------
>
>                 Key: FLINK-5276
>                 URL: https://issues.apache.org/jira/browse/FLINK-5276
>             Project: Flink
>          Issue Type: Bug
>          Components: JobManager
>            Reporter: Ufuk Celebi
>            Assignee: Ufuk Celebi
>             Fix For: 1.1.4
>
>
> I saw a NPE while archiving a ExecutionVertex:
> {code}
> execution graph org.apache.flink.runtime.executiongraph.ExecutionGraph@c4e0722 for archiving.
> java.lang.NullPointerException: null
> 	at org.apache.flink.runtime.executiongraph.ExecutionVertex.prepareForArchiving(ExecutionVertex.java:583)
> 	at org.apache.flink.runtime.executiongraph.ExecutionJobVertex.prepareForArchiving(ExecutionJobVertex.java:439)
> 	at org.apache.flink.runtime.executiongraph.ExecutionGraph.prepareForArchiving(ExecutionGraph.java:1042)
> ...
> {code}
> I think this is due to the newly introduced {{EvictingBoundedList}} which returns a default
element ({{null}})) for evicted elements when iterating over it. 
> This affects the backport to release-1.1 only.



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