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From "Sean Owen (JIRA)" <j...@apache.org>
Subject [jira] [Resolved] (SPARK-15430) Access ListAccumulator's value could possibly cause java.util.ConcurrentModificationException
Date Sun, 22 May 2016 13:09:12 GMT

     [ https://issues.apache.org/jira/browse/SPARK-15430?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

Sean Owen resolved SPARK-15430.
-------------------------------
       Resolution: Fixed
    Fix Version/s: 2.0.0

Issue resolved by pull request 13211
[https://github.com/apache/spark/pull/13211]

> Access ListAccumulator's value could possibly cause java.util.ConcurrentModificationException
> ---------------------------------------------------------------------------------------------
>
>                 Key: SPARK-15430
>                 URL: https://issues.apache.org/jira/browse/SPARK-15430
>             Project: Spark
>          Issue Type: Bug
>          Components: SQL
>            Reporter: Liang-Chi Hsieh
>             Fix For: 2.0.0
>
>
> In ListAccumulator we create an unmodifiable view for underlying list. However, it doesn't
prevent the underlying to be modified further. So as we access the unmodifiable list, the
underlying list can be modified in the same time. It could cause java.util.ConcurrentModificationException.
We should fix it.



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