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Posted to common-dev@hadoop.apache.org by "Vinayakumar B (JIRA)" <ji...@apache.org> on 2018/01/03 12:02:00 UTC
[jira] [Reopened] (HADOOP-13738) DiskChecker should perform some
disk IO
[ https://issues.apache.org/jira/browse/HADOOP-13738?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]
Vinayakumar B reopened HADOOP-13738:
------------------------------------
Re-opening to cherry-pick to branch-2.8
> 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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