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From "Arpit Agarwal (JIRA)" <j...@apache.org>
Subject [jira] [Resolved] (HDFS-11086) DataNode disk check improvements
Date Tue, 06 Jun 2017 13:39:18 GMT

     [ https://issues.apache.org/jira/browse/HDFS-11086?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

Arpit Agarwal resolved HDFS-11086.
----------------------------------
    Resolution: Done

Resolving as all the sub-tasks are fixed.

> DataNode disk check improvements
> --------------------------------
>
>                 Key: HDFS-11086
>                 URL: https://issues.apache.org/jira/browse/HDFS-11086
>             Project: Hadoop HDFS
>          Issue Type: Improvement
>          Components: datanode
>            Reporter: Arpit Agarwal
>            Assignee: Arpit Agarwal
>
> This Jira tracks a few improvements to DataNode’s usage of DiskChecker to address the
following problems:
> # Checks are serialized so a single slow disk can indefinitely delay checking the rest.
> # Related to 1, no detection of stalled checks.
> # Lack of granularity. A single IO error initiates checking all disks.
> # Inconsistent activation. Some DataNode IO failures trigger disk checks but not all.



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