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From "Xiaobing Zhou (JIRA)" <j...@apache.org>
Subject [jira] [Updated] (HDFS-9790) HDFS Balancer should exit with a proper message if upgrade is not finalized
Date Wed, 10 Feb 2016 22:26:18 GMT

     [ https://issues.apache.org/jira/browse/HDFS-9790?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

Xiaobing Zhou updated HDFS-9790:
--------------------------------
    Fix Version/s:     (was: 2.8.0)

> HDFS Balancer should exit with a proper message if upgrade is not finalized
> ---------------------------------------------------------------------------
>
>                 Key: HDFS-9790
>                 URL: https://issues.apache.org/jira/browse/HDFS-9790
>             Project: Hadoop HDFS
>          Issue Type: Bug
>            Reporter: Xiaobing Zhou
>            Assignee: Xiaobing Zhou
>
> PROBLEM: Currently if the upgrade is not finalized the balancer just exits as it cannot
move any blocks as no deletes can go through the datanodes before a finalize. This is not
clear to customers as many in the field do not even understand what an upgrade finalized action
does in HDFS.
> EXPECTED BEHAVIOR:
> Balancer should exit saying something like "Balancer exiting as upgrade is not finalized.
Please finalize the hdfs upgrade before running the balancer"



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