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https://issues.apache.org/jira/browse/HADOOP-2407?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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stack updated HADOOP-2407:
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Attachment: hsf.patch
Force reading of MapFile index
> [hbase] Keeping MapFile.Reader open is expensive: Part 2
> --------------------------------------------------------
>
> Key: HADOOP-2407
> URL: https://issues.apache.org/jira/browse/HADOOP-2407
> Project: Hadoop
> Issue Type: Improvement
> Components: contrib/hbase
> Reporter: stack
> Fix For: 0.16.0
>
> Attachments: hsf.patch
>
>
> In hbase, a mapfile.Reader can be opened and a long period of time may pass
> before any accesses are made against the file. It can also be the case that
> a MapFile will be opened and never accessed. For every open unaccessed
> MapFile -- i.e. next or a record at some offset hasn't been pulled -- we'll
> consume two sockets in datanode, etc.
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