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From "Daryn Sharp (JIRA)" <j...@apache.org>
Subject [jira] [Created] (HDFS-12171) Reduce IIP object allocations for inode lookup
Date Thu, 20 Jul 2017 18:01:00 GMT
Daryn Sharp created HDFS-12171:

             Summary: Reduce IIP object allocations for inode lookup
                 Key: HDFS-12171
                 URL: https://issues.apache.org/jira/browse/HDFS-12171
             Project: Hadoop HDFS
          Issue Type: Improvement
          Components: namenode
    Affects Versions: 2.7.0
            Reporter: Daryn Sharp
            Assignee: Daryn Sharp

{{IIP#getReadOnlyINodes}} is invoked frequently for EZ and EC lookups.  It allocates unnecessary
objects to make the primitive array an immutable array list.  IIP already has a method for
indexed inode retrieval that can be tweaked to further improve performance.

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