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Date: Wed, 19 Sep 2012 15:47:07 +1100 (NCT)
From: "Andrew Wang (JIRA)" <jira@apache.org>
To: hdfs-dev@hadoop.apache.org
Message-ID: <2034901229.95928.1348030027573.JavaMail.jiratomcat@arcas>
Subject: [jira] [Created] (HDFS-3957) Change MutableQuantiles to use a
 shared thread for rolling over metrics
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Andrew Wang created HDFS-3957:
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             Summary: Change MutableQuantiles to use a shared thread for rolling over metrics
                 Key: HDFS-3957
                 URL: https://issues.apache.org/jira/browse/HDFS-3957
             Project: Hadoop HDFS
          Issue Type: Improvement
    Affects Versions: 2.0.3-alpha
            Reporter: Andrew Wang
            Assignee: Andrew Wang
            Priority: Minor


Each MutableQuantiles currently creates its own thread to rollover the histogram every interval. It'd be better to do this with a single, shared thread or executor, and do it with a ThreadFactory that names it properly.

Similar changes were made when porting MutableQuantiles to HBase in HBASE-6409, so this would also help keep them in sync.

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