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https://issues.apache.org/jira/browse/HADOOP-7370?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17640787#comment-17640787
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Mukund Thakur edited comment on HADOOP-7370 at 11/29/22 3:40 PM:
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Vectored IO superceedes this feature. 
https://issues.apache.org/jira/browse/HADOOP-18103


was (Author: mthakur):
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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