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https://issues.apache.org/jira/browse/HDFS-2080?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Todd Lipcon updated HDFS-2080:
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Attachment: hdfs-2080.txt
Updated patch to fix a couple of the issues mentioned above:
- fix a couple of tests which used {{new Socket}} directly instead of the
{{SocketFactory}} -- thus they didn't have associated Channels and BlockReader
failed
- fix blockreader to handle EOF correctly (fixes TestClientBlockVerification)
- fix TestSeekBug to use readFully where necessary
the append-related bug still exists, but this patch should be useful enough for
some people to play around with this if interested.
> Speed up DFS read path
> ----------------------
>
> Key: HDFS-2080
> URL: https://issues.apache.org/jira/browse/HDFS-2080
> Project: Hadoop HDFS
> Issue Type: Improvement
> Components: hdfs client
> Affects Versions: 0.23.0
> Reporter: Todd Lipcon
> Assignee: Todd Lipcon
> Fix For: 0.23.0
>
> Attachments: hdfs-2080.txt, hdfs-2080.txt
>
>
> I've developed a series of patches that speeds up the HDFS read path by a
> factor of about 2.5x (~300M/sec to ~800M/sec for localhost reading from
> buffer cache) and also will make it easier to allow for advanced users (eg
> hbase) to skip a buffer copy.
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