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https://issues.apache.org/jira/browse/HDFS-2129?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13142891#comment-13142891
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Todd Lipcon commented on HDFS-2129:
-----------------------------------
Committed to 0.23 for 0.23.1. Committed to trunk for 0.24.
> Simplify BlockReader to not inherit from FSInputChecker
> -------------------------------------------------------
>
> Key: HDFS-2129
> URL: https://issues.apache.org/jira/browse/HDFS-2129
> Project: Hadoop HDFS
> Issue Type: Sub-task
> Components: hdfs client, performance
> Reporter: Todd Lipcon
> Assignee: Todd Lipcon
> Fix For: 0.24.0, 0.23.1
>
> Attachments: hdfs-2129-benchmark.png, hdfs-2129.txt, hdfs-2129.txt,
> hdfs-2129.txt, hdfs-2129.txt, hdfs-2129.txt, hdfs-2129.txt, hdfs-2129.txt,
> hdfs-2129.txt, seq-read-1gb-bench.png
>
>
> BlockReader is currently quite complicated since it has to conform to the
> FSInputChecker inheritance structure. It would be much simpler to implement
> it standalone. Benchmarking indicates it's slightly faster, as well.
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