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https://issues.apache.org/jira/browse/HBASE-6121?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14267728#comment-14267728
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Cosmin Lehene commented on HBASE-6121:
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[~amirshim], [~apurtell] is this still valid?
> [89-fb] Fix TaskMonitor/MultiPut multithreading bug
> ---------------------------------------------------
>
> Key: HBASE-6121
> URL: https://issues.apache.org/jira/browse/HBASE-6121
> Project: HBase
> Issue Type: Bug
> Reporter: Amir Shimoni
> Assignee: Amir Shimoni
> Priority: Minor
> Labels: delete
>
> We shouldn't clear an ArrayList that might be iterated on by another thread.
> Specifically, multiput() calls clear() on ArrayList (to free up some memory)
> while MultiPut.toMap is iterating over that ArrayList in a different thread
> (called from MonitorTasks UI)
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