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From "Hudson (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (HDFS-10963) Reduce log level when network topology cannot find enough datanodes.
Date Thu, 06 Oct 2016 12:40:21 GMT

    [ https://issues.apache.org/jira/browse/HDFS-10963?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15551839#comment-15551839
] 

Hudson commented on HDFS-10963:
-------------------------------

SUCCESS: Integrated in Jenkins build Hadoop-trunk-Commit #10553 (See [https://builds.apache.org/job/Hadoop-trunk-Commit/10553/])
HDFS-10963. Reduce log level when network topology cannot find enough (brahma: rev b90fc70d671481564e468550c770c925f25d7db0)
* (edit) hadoop-hdfs-project/hadoop-hdfs/src/main/java/org/apache/hadoop/hdfs/server/blockmanagement/BlockPlacementPolicyDefault.java
* (edit) hadoop-common-project/hadoop-common/src/main/java/org/apache/hadoop/net/NetworkTopology.java


> Reduce log level when network topology cannot find enough datanodes.
> --------------------------------------------------------------------
>
>                 Key: HDFS-10963
>                 URL: https://issues.apache.org/jira/browse/HDFS-10963
>             Project: Hadoop HDFS
>          Issue Type: Improvement
>            Reporter: Xiao Chen
>            Assignee: Xiao Chen
>            Priority: Minor
>              Labels: supportability
>             Fix For: 2.8.0, 3.0.0-alpha2
>
>         Attachments: HDFS-10963.01.patch
>
>
> Credit to [~qwertymaniac] who reported this.
> {quote}
> The change made by HDFS-10320 now causes all 1-rack cluster to keep printing below:
>   WARN	org.apache.hadoop.net.NetworkTopology	
>   Failed to find datanode (scope="" excludedScope="/default").
> {quote}
> This was added in HDFS-10320 to replace an exception that caused NN terminate. A warn
log was added. But thinking closely, this should be debug to reduce confusion.



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