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From "Akira Ajisaka (JIRA)" <j...@apache.org>
Subject [jira] [Updated] (HDFS-11808) Backport HDFS-8549 to branch-2.7: Abort the balancer if an upgrade is in progress
Date Fri, 02 Jun 2017 09:31:04 GMT

     [ https://issues.apache.org/jira/browse/HDFS-11808?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

Akira Ajisaka updated HDFS-11808:
---------------------------------
    Attachment: HDFS-11808-branch-2.7-02.patch

I found a root cause. After HDFS-8824, the following setting is required to rebalance small
blocks.
{code}
conf.setLong(DFSConfigKeys.DFS_BALANCER_GETBLOCKS_MIN_BLOCK_SIZE_KEY, 1L);
{code}
Attaching a patch to add the setting.

> Backport HDFS-8549 to branch-2.7: Abort the balancer if an upgrade is in progress
> ---------------------------------------------------------------------------------
>
>                 Key: HDFS-11808
>                 URL: https://issues.apache.org/jira/browse/HDFS-11808
>             Project: Hadoop HDFS
>          Issue Type: Improvement
>            Reporter: Vinitha Reddy Gankidi
>            Assignee: Akira Ajisaka
>         Attachments: HDFS-11808-branch-2.7-01.patch, HDFS-11808-branch-2.7-02.patch
>
>
> As per discussussion in [mailling list|http://mail-archives.apache.org/mod_mbox/hadoop-mapreduce-dev/201705.mbox/browser]
backport HDFS-8549 to branch-2.7



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