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https://issues.apache.org/jira/browse/HADOOP-2172?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Johan Oskarsson reassigned HADOOP-2172:
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Assignee: Johan Oskarsson
> PositionCache was removed from FSDataInputStream, causes extremely bad
> MapFile performance
> ------------------------------------------------------------------------------------------
>
> Key: HADOOP-2172
> URL: https://issues.apache.org/jira/browse/HADOOP-2172
> Project: Hadoop
> Issue Type: Bug
> Affects Versions: 0.14.3, 0.15.0
> Reporter: Johan Oskarsson
> Assignee: Johan Oskarsson
> Priority: Blocker
>
> The PositionCache in FSDataInputStream seems to have been removed in
> HADOOP-1470. This causes for example MapFile.get usage to be extremely slow
> as the file position isn't cached in memory.
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