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From "hu xiaodong (JIRA)" <j...@apache.org>
Subject [jira] [Created] (HDFS-13046) consider load of datanodes when read blocks of file
Date Tue, 23 Jan 2018 05:33:02 GMT
hu xiaodong created HDFS-13046:
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             Summary: consider load of datanodes when read blocks of file
                 Key: HDFS-13046
                 URL: https://issues.apache.org/jira/browse/HDFS-13046
             Project: Hadoop HDFS
          Issue Type: New Feature
            Reporter: hu xiaodong
            Assignee: hu xiaodong


When sorting block locations, we just consider the distance of datanodes. can we consider
the load of datanodes? We can add a configuration such as 'dfs.namenode.reading.considerLoad',
if set to true, then sort the blocklocations by load of the datanodes, otherwise sort by distance.



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