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https://issues.apache.org/jira/browse/HDFS-5522?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Kihwal Lee updated HDFS-5522:
-----------------------------
Resolution: Fixed
Fix Version/s: 2.5.0
3.0.0
Hadoop Flags: Reviewed
Status: Resolved (was: Patch Available)
Thanks for working on this, Rushabh. I've committed this to branch-2 and trunk.
This feature makes disk check asynchronous, so handlers(DataXceiver) won't get
blocked while checking disks.
> Datanode disk error check may be incorrectly skipped
> ----------------------------------------------------
>
> Key: HDFS-5522
> URL: https://issues.apache.org/jira/browse/HDFS-5522
> Project: Hadoop HDFS
> Issue Type: Bug
> Affects Versions: 0.23.9, 2.2.0
> Reporter: Kihwal Lee
> Assignee: Rushabh S Shah
> Fix For: 3.0.0, 2.5.0
>
> Attachments: HDFS-5522-v2.patch, HDFS-5522-v3.patch, HDFS-5522.patch
>
>
> After HDFS-4581 and HDFS-4699, {{checkDiskError()}} is not called when
> network errors occur during processing data node requests. This appears to
> create problems when a disk is having problems, but not failing I/O soon.
> If I/O hangs for a long time, network read/write may timeout first and the
> peer may close the connection. Although the error was caused by a faulty
> local disk, disk check is not being carried out in this case.
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