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  1. Hadoop HDFS
  2. HDFS-12171

Reduce IIP object allocations for inode lookup

          Details

          • Type: Improvement
          • Status: Resolved
          • Priority: Major
          • Resolution: Fixed
          • Affects Version/s: 2.7.0
          • Fix Version/s: 2.9.0, 3.0.0-beta1, 2.8.3
          • Component/s: namenode
          • Labels:
            None
          • Target Version/s:
          • Hadoop Flags:
            Reviewed

            Description

            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.

              Attachments

              1. HDFS-12171.branch-2.patch
                4 kB
                Daryn Sharp
              2. HDFS-12171.patch
                5 kB
                Daryn Sharp

                Issue Links

                is broken by

                Sub-task - The sub-task of the issue HDFS-7498 Simplify the logic in INodesInPath

                • Major - Major loss of function.
                • Closed

                  Activity

                    People

                    • Assignee:
                      daryn Daryn Sharp
                      Reporter:
                      daryn Daryn Sharp
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                      Dates

                      • Created:
                        Updated:
                        Resolved: