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From "Yiqun Lin (JIRA)" <j...@apache.org>
Subject [jira] [Created] (HDFS-11494) Log message when DN is not selected for block replication
Date Fri, 03 Mar 2017 13:18:45 GMT
Yiqun Lin created HDFS-11494:
--------------------------------

             Summary: Log message when DN is not selected for block replication
                 Key: HDFS-11494
                 URL: https://issues.apache.org/jira/browse/HDFS-11494
             Project: Hadoop HDFS
          Issue Type: Improvement
    Affects Versions: 3.0.0-alpha2
            Reporter: Yiqun Lin
            Assignee: Yiqun Lin
            Priority: Minor


In HDFS-8946, a important message was removed.
{code}
if (requiredSize > remaining - scheduledSize) {
      logNodeIsNotChosen(storage, "the node does not have enough "
          + storage.getStorageType() + " space"
          + " (required=" + requiredSize
          + ", scheduled=" + scheduledSize
          + ", remaining=" + remaining + ")");
      return false;
    }
{code}
This log is important since it can tell us why DN is not selected for block replication. And
it will be good for us to debug issues.



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