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https://issues.apache.org/jira/browse/MAPREDUCE-7513?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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John Doe updated MAPREDUCE-7513:
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Attachment: TestViolation.java
> Thread-unsafe collection can be accessed concurrently
> -----------------------------------------------------
>
> Key: MAPREDUCE-7513
> URL: https://issues.apache.org/jira/browse/MAPREDUCE-7513
> Project: Hadoop Map/Reduce
> Issue Type: Bug
> Affects Versions: 3.4.1
> Reporter: John Doe
> Priority: Major
> Attachments: TestViolation.java
>
>
> reduces in RMContainerAllocator is a thread-unsafe linked hash map. When it
> is accessed by an iterator, if another function accesses it concurrently, a
> ConcurrentModificationException occurs.
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