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https://issues.apache.org/jira/browse/HDFS-10140?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Vinayakumar B deleted HDFS-10140:
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> CLONE - Erasure Coding: reuse BlockReader when reading the same block in pread
> ------------------------------------------------------------------------------
>
> Key: HDFS-10140
> URL: https://issues.apache.org/jira/browse/HDFS-10140
> Project: Hadoop HDFS
> Issue Type: Sub-task
> Reporter: dragon
> Assignee: Jing Zhao
>
> Currently in pread, we create a new block reader for each aligned stripe even
> though these stripes belong to the same block. It's better to reuse them to
> avoid unnecessary block reader creation overhead. This can also avoid reading
> from the same bad DataNode.
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