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https://issues.apache.org/jira/browse/HDFS-8281?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Jing Zhao updated HDFS-8281:
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Attachment: HDFS-8281.000.patch
Upload the initial patch for review. Still need to add more tests.
The basic idea is to add an extra buffer in DFSStripedInputStream holding a
complete stripe (or the last partial stripe in the block), and do parallel
reading while reading the stripe. In this way we can greatly simplify the later
decoding logic although we bring in extra data copy.
> Erasure Coding: implement parallel stateful reading for striped layout
> ----------------------------------------------------------------------
>
> Key: HDFS-8281
> URL: https://issues.apache.org/jira/browse/HDFS-8281
> Project: Hadoop HDFS
> Issue Type: Sub-task
> Reporter: Jing Zhao
> Assignee: Jing Zhao
> Attachments: HDFS-8281.000.patch
>
>
> This jira aims to support parallel reading for stateful read in
> {{DFSStripedInputStream}}.
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