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https://issues.apache.org/jira/browse/HDFS-5810?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Colin Patrick McCabe updated HDFS-5810:
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Attachment: HDFS-5810.018.patch
> Unify mmap cache and short-circuit file descriptor cache
> --------------------------------------------------------
>
> Key: HDFS-5810
> URL: https://issues.apache.org/jira/browse/HDFS-5810
> Project: Hadoop HDFS
> Issue Type: Sub-task
> Components: hdfs-client
> Affects Versions: 2.3.0
> Reporter: Colin Patrick McCabe
> Assignee: Colin Patrick McCabe
> Attachments: HDFS-5810.001.patch, HDFS-5810.004.patch,
> HDFS-5810.006.patch, HDFS-5810.008.patch, HDFS-5810.015.patch,
> HDFS-5810.016.patch, HDFS-5810.018.patch
>
>
> We should unify the client mmap cache and the client file descriptor cache.
> Since mmaps are granted corresponding to file descriptors in the cache
> (currently FileInputStreamCache), they have to be tracked together to do
> "smarter" things like HDFS-5182.
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