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https://issues.apache.org/jira/browse/HDFS-7686?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Colin Patrick McCabe updated HDFS-7686:
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Description: When doing a transferTo (aka sendfile operation) from the
DataNode to a client, we may hit an I/O error from the disk. If we believe
this is the case, we should be able to tell the block scanner to rescan that
block soon. The feature was originally implemented in HDFS-7548 but was
removed by HDFS-7430. We should re-add it. (was: The feature implemented in
HDFS-7548 is removed by HDFS-7430.
)
> Re-add rapid rescan of possibly corrupt block feature to the block scanner
> --------------------------------------------------------------------------
>
> Key: HDFS-7686
> URL: https://issues.apache.org/jira/browse/HDFS-7686
> Project: Hadoop HDFS
> Issue Type: Bug
> Affects Versions: 3.0.0
> Reporter: Rushabh S Shah
> Assignee: Colin Patrick McCabe
> Priority: Blocker
> Attachments: HDFS-7686.002.patch
>
>
> When doing a transferTo (aka sendfile operation) from the DataNode to a
> client, we may hit an I/O error from the disk. If we believe this is the
> case, we should be able to tell the block scanner to rescan that block soon.
> The feature was originally implemented in HDFS-7548 but was removed by
> HDFS-7430. We should re-add it.
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