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https://issues.apache.org/jira/browse/HDFS-9103?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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James Clampffer updated HDFS-9103:
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Attachment: HDFS-9103.HDFS-8707.006.patch
Adding a patch:
This is effectively the logic I had in one of the earlier revisions of
HDFS-8766 however now it keeps time on a per-node basis. I added a class,
BadDataNodeTracker, that encapsulates all locking. The HadoopFileSystem is the
first to create it and keep a shared_ptr with make_shared and then each
FileHandle object is given a shared_ptr to tracker as well.
> Retry reads on DN failure
> -------------------------
>
> Key: HDFS-9103
> URL: https://issues.apache.org/jira/browse/HDFS-9103
> Project: Hadoop HDFS
> Issue Type: Sub-task
> Components: hdfs-client
> Reporter: Bob Hansen
> Assignee: James Clampffer
> Fix For: HDFS-8707
>
> Attachments: HDFS-9103.1.patch, HDFS-9103.2.patch,
> HDFS-9103.HDFS-8707.006.patch, HDFS-9103.HDFS-8707.3.patch,
> HDFS-9103.HDFS-8707.4.patch, HDFS-9103.HDFS-8707.5.patch
>
>
> When AsyncPreadSome fails, add the failed DataNode to the excluded list and
> try again.
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