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https://issues.apache.org/jira/browse/HDFS-8272?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Jing Zhao updated HDFS-8272:
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Attachment: HDFS-8272.002.patch
Thanks for the review, Zhe and Yi! I just merged HDFS-8280 into HDFS-7285
branch. Upload the patch excluding the changes in DFSInputStream. Also fix the
bug pointed out by Yi.
About the {{seekToBlockSource}}, I think it may be better to remove it by now:
# With decoding functionality we do not need to spend more time trying our luck
on the same DN.
# Currently calling {{seekToBlockSource}} will cause all the current block
readers to be closed (since {{blockSeekTo}} will call
{{closeCurrentBlockReaders}}). To fix this we need to add extra complexity so
as to make sure only one block reader is retried.
> Erasure Coding: simplify the retry logic in DFSStripedInputStream (stateful
> read)
> ---------------------------------------------------------------------------------
>
> Key: HDFS-8272
> URL: https://issues.apache.org/jira/browse/HDFS-8272
> Project: Hadoop HDFS
> Issue Type: Sub-task
> Reporter: Jing Zhao
> Assignee: Jing Zhao
> Attachments: HDFS-8272.002.patch, h8272-HDFS-7285.000.patch,
> h8272-HDFS-7285.001.patch
>
>
> Currently in DFSStripedInputStream the retry logic is still the same with
> DFSInputStream. More specifically, every failed read will try to search for
> another source node. And an exception is thrown when no new source node can
> be identified. This logic is not appropriate for EC inputstream and can be
> simplified.
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