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From "Arpit Agarwal (JIRA)" <j...@apache.org>
Subject [jira] [Created] (HDFS-11054) Suppress verbose log message in BlockPlacementPolicyDefault
Date Tue, 25 Oct 2016 21:50:58 GMT
Arpit Agarwal created HDFS-11054:

             Summary: Suppress verbose log message in BlockPlacementPolicyDefault
                 Key: HDFS-11054
                 URL: https://issues.apache.org/jira/browse/HDFS-11054
             Project: Hadoop HDFS
          Issue Type: Bug
            Reporter: Arpit Agarwal
            Assignee: Chen Liang

We saw an instance where this log message was generated millions of times in a short time
interval, slowing the NameNode to a crawl. It can probably be changed to log at DEBUG level

      if (cur == null) {
        LOG.warn("No excess replica can be found. excessTypes: "+excessTypes+
            ". moreThanOne: "+moreThanOne+". exactlyOne: "+exactlyOne+".");

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