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From "Virajith Jalaparti (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (HDFS-12905) [READ] Handle decommissioning and under-maintenance Datanodes with Provided storage.
Date Fri, 08 Dec 2017 18:08:00 GMT

    [ https://issues.apache.org/jira/browse/HDFS-12905?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16283947#comment-16283947
] 

Virajith Jalaparti commented on HDFS-12905:
-------------------------------------------

Thanks for taking a look [~elgoiri]. Will commit patch v2 after fixing the checkstyle issues.

> [READ] Handle decommissioning and under-maintenance Datanodes with Provided storage.
> ------------------------------------------------------------------------------------
>
>                 Key: HDFS-12905
>                 URL: https://issues.apache.org/jira/browse/HDFS-12905
>             Project: Hadoop HDFS
>          Issue Type: Sub-task
>            Reporter: Virajith Jalaparti
>            Assignee: Virajith Jalaparti
>         Attachments: HDFS-12905-HDFS-9806.001.patch, HDFS-12905-HDFS-9806.002.patch
>
>
> {{ProvidedStorageMap}} doesn't keep track of the state of the datanodes with Provided
storage. As a result, it can return nodes that are being decommissioned or under-maintenance
even when live datanodes exist. This JIRA is to prefer live datanodes to datanodes in other
states.



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