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https://issues.apache.org/jira/browse/HDFS-9790?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15144043#comment-15144043
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Hudson commented on HDFS-9790:
------------------------------
FAILURE: Integrated in Hadoop-trunk-Commit #9289 (See
[https://builds.apache.org/job/Hadoop-trunk-Commit/9289/])
HDFS-9790. HDFS Balancer should exit with a proper message if upgrade is (arp:
rev 9b959f3ee70cfdaf532d72f0bbbd1a4be0be12aa)
* hadoop-hdfs-project/hadoop-hdfs/CHANGES.txt
*
hadoop-hdfs-project/hadoop-hdfs/src/main/java/org/apache/hadoop/hdfs/server/balancer/Balancer.java
> 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
> Fix For: 2.8.0
>
> Attachments: HDFS-9790.001.patch, HDFS-9790.002.patch
>
>
> 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 users.
> 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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