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https://issues.apache.org/jira/browse/HADOOP-7370?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Mukund Thakur resolved HADOOP-7370.
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Resolution: Won't Fix
Vectored IO superceedes this feature.
> Optimize pread on ChecksumFileSystem
> ------------------------------------
>
> Key: HADOOP-7370
> URL: https://issues.apache.org/jira/browse/HADOOP-7370
> Project: Hadoop Common
> Issue Type: Improvement
> Components: fs
> Reporter: Todd Lipcon
> Assignee: Todd Lipcon
> Priority: Major
> Attachments: checksumfs-pread-0.20.txt
>
>
> Currently the implementation of positional read in ChecksumFileSystem is
> verify inefficient - it actually re-opens the underlying file and checksum
> file, then seeks and uses normal read. Instead, it can push down positional
> read directly to the underlying FS and verify checksum.
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