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Posted to common-issues@hadoop.apache.org by "Vinayakumar B (JIRA)" <ji...@apache.org> on 2017/06/06 10:34:18 UTC
[jira] [Commented] (HADOOP-13738) DiskChecker should perform some
disk IO
[ https://issues.apache.org/jira/browse/HADOOP-13738?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16038579#comment-16038579 ]
Vinayakumar B commented on HADOOP-13738:
----------------------------------------
Any thoughts on making this improvement into 2.8 and 2.7 branches?
> DiskChecker should perform some disk IO
> ---------------------------------------
>
> Key: HADOOP-13738
> URL: https://issues.apache.org/jira/browse/HADOOP-13738
> Project: Hadoop Common
> Issue Type: Improvement
> Reporter: Arpit Agarwal
> Assignee: Arpit Agarwal
> Fix For: 2.9.0, 3.0.0-alpha2
>
> Attachments: HADOOP-13738.01.patch, HADOOP-13738.02.patch, HADOOP-13738.03.patch, HADOOP-13738.04.patch, HADOOP-13738.05.patch
>
>
> DiskChecker can fail to detect total disk/controller failures indefinitely. We have seen this in real clusters. DiskChecker performs simple permissions-based checks on directories which do not guarantee that any disk IO will be attempted.
> A simple improvement is to write some data and flush it to the disk.
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