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From "Daryn Sharp (JIRA)" <j...@apache.org>
Subject [jira] [Created] (HDFS-7434) DatanodeID hashCode should not be mutable
Date Mon, 24 Nov 2014 16:42:12 GMT
Daryn Sharp created HDFS-7434:
---------------------------------

             Summary: DatanodeID hashCode should not be mutable
                 Key: HDFS-7434
                 URL: https://issues.apache.org/jira/browse/HDFS-7434
             Project: Hadoop HDFS
          Issue Type: Improvement
          Components: namenode
    Affects Versions: 2.0.0-alpha, 3.0.0
            Reporter: Daryn Sharp


Mutable hash codes may lead to orphaned instances in a collection.  Instances must always
be removed prior to modification of hash code values, and re-inserted.  Although current code
appears to do this, the mutable hash code is a landmine.



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