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https://issues.apache.org/jira/browse/SPARK-2043?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Matei Zaharia resolved SPARK-2043.
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Resolution: Fixed
Fix Version/s: 1.1.0
1.0.1
0.9.2
> ExternalAppendOnlyMap doesn't always find matching keys
> -------------------------------------------------------
>
> Key: SPARK-2043
> URL: https://issues.apache.org/jira/browse/SPARK-2043
> Project: Spark
> Issue Type: Bug
> Components: Spark Core
> Affects Versions: 0.9.0, 0.9.1, 1.0.0
> Reporter: Matei Zaharia
> Assignee: Matei Zaharia
> Priority: Blocker
> Fix For: 0.9.2, 1.0.1, 1.1.0
>
>
> The current implementation reads one key with the next hash code as it
> finishes reading the keys with the current hash code, which may cause it to
> miss some matches of the next key. This can cause operations like join to
> give the wrong result when reduce tasks spill to disk and there are hash
> collisions, as values won't be matched together.
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