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https://issues.apache.org/jira/browse/HDFS-5267?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Junping Du moved HADOOP-9980 to HDFS-5267:
------------------------------------------

      Component/s:     (was: util)
    Fix Version/s:     (was: 2.3.0)
                   2.3.0
              Key: HDFS-5267  (was: HADOOP-9980)
          Project: Hadoop HDFS  (was: Hadoop Common)
    
> LightWeightGSet's modification field should be volatile so that detect 
> changes by other thread in iteration.
> ------------------------------------------------------------------------------------------------------------
>
>                 Key: HDFS-5267
>                 URL: https://issues.apache.org/jira/browse/HDFS-5267
>             Project: Hadoop HDFS
>          Issue Type: Bug
>            Reporter: Junping Du
>            Assignee: Junping Du
>             Fix For: 2.3.0
>
>         Attachments: HADOOP-9980.patch
>
>
> LightWeightGSet should have a volatile modification field (like: 
> LightWeightHashSet or LightWeightLinkedSet) that is used to detect updates 
> while iterating so they can throw a ConcurrentModificationException.

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