Hadoop HDFS
  1. Hadoop HDFS
  2. HDFS-554

BlockInfo.ensureCapacity may get a speedup from System.arraycopy()

    Details

    • Type: Improvement Improvement
    • Status: Closed
    • Priority: Minor Minor
    • Resolution: Fixed
    • Affects Version/s: 0.21.0
    • Fix Version/s: 0.23.1
    • Component/s: namenode
    • Labels:
      None
    • Hadoop Flags:
      Reviewed

      Description

      BlockInfo.ensureCapacity() uses a for() loop to copy the old array data into the expanded array. System.arraycopy() is generally much faster for this, as it can do a bulk memory copy. There is also the typesafe Java6 Arrays.copyOf() to consider, though here it offers no tangible benefit.

      1. HDFS-554.txt
        0.9 kB
        Harsh J
      2. HDFS-554.txt
        0.9 kB
        Harsh J
      3. HDFS-554.patch
        0.9 kB
        Harsh J

        Activity

        Hide
        Hudson added a comment -

        Integrated in Hadoop-Mapreduce-trunk #951 (See https://builds.apache.org/job/Hadoop-Mapreduce-trunk/951/)
        Merged HDFS-2349, HDFS-2729, HDFS-2726, HDFS-554, HDFS-1314, HADOOP-7910 to branch-0.23, updating CHANGES.txt for trunk.

        harsh : http://svn.apache.org/viewcvs.cgi/?root=Apache-SVN&view=rev&rev=1228567
        Files :

        • /hadoop/common/trunk/hadoop-common-project/hadoop-common/CHANGES.txt
        • /hadoop/common/trunk/hadoop-hdfs-project/hadoop-hdfs/CHANGES.txt
        Show
        Hudson added a comment - Integrated in Hadoop-Mapreduce-trunk #951 (See https://builds.apache.org/job/Hadoop-Mapreduce-trunk/951/ ) Merged HDFS-2349 , HDFS-2729 , HDFS-2726 , HDFS-554 , HDFS-1314 , HADOOP-7910 to branch-0.23, updating CHANGES.txt for trunk. harsh : http://svn.apache.org/viewcvs.cgi/?root=Apache-SVN&view=rev&rev=1228567 Files : /hadoop/common/trunk/hadoop-common-project/hadoop-common/CHANGES.txt /hadoop/common/trunk/hadoop-hdfs-project/hadoop-hdfs/CHANGES.txt
        Hide
        Hudson added a comment -

        Integrated in Hadoop-Mapreduce-0.23-Build #153 (See https://builds.apache.org/job/Hadoop-Mapreduce-0.23-Build/153/)
        merge HDFS-2349, HDFS-2729, HDFS-2726, HDFS-554, HDFS-1314, HADOOP-7910 to branch-0.23.

        harsh : http://svn.apache.org/viewcvs.cgi/?root=Apache-SVN&view=rev&rev=1228562
        Files :

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        Show
        Hudson added a comment - Integrated in Hadoop-Mapreduce-0.23-Build #153 (See https://builds.apache.org/job/Hadoop-Mapreduce-0.23-Build/153/ ) merge HDFS-2349 , HDFS-2729 , HDFS-2726 , HDFS-554 , HDFS-1314 , HADOOP-7910 to branch-0.23. harsh : http://svn.apache.org/viewcvs.cgi/?root=Apache-SVN&view=rev&rev=1228562 Files : /hadoop/common/branches/branch-0.23 /hadoop/common/branches/branch-0.23/hadoop-common-project /hadoop/common/branches/branch-0.23/hadoop-common-project/hadoop-auth /hadoop/common/branches/branch-0.23/hadoop-common-project/hadoop-common /hadoop/common/branches/branch-0.23/hadoop-common-project/hadoop-common/CHANGES.txt /hadoop/common/branches/branch-0.23/hadoop-common-project/hadoop-common/src/main/docs /hadoop/common/branches/branch-0.23/hadoop-common-project/hadoop-common/src/main/docs/src/documentation/content/xdocs/cluster_setup.xml /hadoop/common/branches/branch-0.23/hadoop-common-project/hadoop-common/src/main/java 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/hadoop/common/branches/branch-0.23/hadoop-hdfs-project/hadoop-hdfs/src/main/java/org/apache/hadoop/hdfs/DFSOutputStream.java /hadoop/common/branches/branch-0.23/hadoop-hdfs-project/hadoop-hdfs/src/main/java/org/apache/hadoop/hdfs/server/blockmanagement/BlockInfo.java /hadoop/common/branches/branch-0.23/hadoop-hdfs-project/hadoop-hdfs/src/main/java/org/apache/hadoop/hdfs/server/blockmanagement/BlockManager.java /hadoop/common/branches/branch-0.23/hadoop-hdfs-project/hadoop-hdfs/src/main/java/org/apache/hadoop/hdfs/server/datanode/DataNode.java /hadoop/common/branches/branch-0.23/hadoop-hdfs-project/hadoop-hdfs/src/main/java/org/apache/hadoop/hdfs/server/datanode/DataXceiverServer.java /hadoop/common/branches/branch-0.23/hadoop-hdfs-project/hadoop-hdfs/src/main/java/org/apache/hadoop/hdfs/server/namenode/FSNamesystem.java /hadoop/common/branches/branch-0.23/hadoop-hdfs-project/hadoop-hdfs/src/main/java/org/apache/hadoop/hdfs/web/WebHdfsFileSystem.java 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        Hide
        Hudson added a comment -

        Integrated in Hadoop-Hdfs-trunk #918 (See https://builds.apache.org/job/Hadoop-Hdfs-trunk/918/)
        Merged HDFS-2349, HDFS-2729, HDFS-2726, HDFS-554, HDFS-1314, HADOOP-7910 to branch-0.23, updating CHANGES.txt for trunk.

        harsh : http://svn.apache.org/viewcvs.cgi/?root=Apache-SVN&view=rev&rev=1228567
        Files :

        • /hadoop/common/trunk/hadoop-common-project/hadoop-common/CHANGES.txt
        • /hadoop/common/trunk/hadoop-hdfs-project/hadoop-hdfs/CHANGES.txt
        Show
        Hudson added a comment - Integrated in Hadoop-Hdfs-trunk #918 (See https://builds.apache.org/job/Hadoop-Hdfs-trunk/918/ ) Merged HDFS-2349 , HDFS-2729 , HDFS-2726 , HDFS-554 , HDFS-1314 , HADOOP-7910 to branch-0.23, updating CHANGES.txt for trunk. harsh : http://svn.apache.org/viewcvs.cgi/?root=Apache-SVN&view=rev&rev=1228567 Files : /hadoop/common/trunk/hadoop-common-project/hadoop-common/CHANGES.txt /hadoop/common/trunk/hadoop-hdfs-project/hadoop-hdfs/CHANGES.txt
        Hide
        Hudson added a comment -

        Integrated in Hadoop-Hdfs-0.23-Build #131 (See https://builds.apache.org/job/Hadoop-Hdfs-0.23-Build/131/)
        merge HDFS-2349, HDFS-2729, HDFS-2726, HDFS-554, HDFS-1314, HADOOP-7910 to branch-0.23.

        harsh : http://svn.apache.org/viewcvs.cgi/?root=Apache-SVN&view=rev&rev=1228562
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        Hudson added a comment - Integrated in Hadoop-Hdfs-0.23-Build #131 (See https://builds.apache.org/job/Hadoop-Hdfs-0.23-Build/131/ ) merge HDFS-2349 , HDFS-2729 , HDFS-2726 , HDFS-554 , HDFS-1314 , HADOOP-7910 to branch-0.23. harsh : http://svn.apache.org/viewcvs.cgi/?root=Apache-SVN&view=rev&rev=1228562 Files : /hadoop/common/branches/branch-0.23 /hadoop/common/branches/branch-0.23/hadoop-common-project /hadoop/common/branches/branch-0.23/hadoop-common-project/hadoop-auth /hadoop/common/branches/branch-0.23/hadoop-common-project/hadoop-common /hadoop/common/branches/branch-0.23/hadoop-common-project/hadoop-common/CHANGES.txt /hadoop/common/branches/branch-0.23/hadoop-common-project/hadoop-common/src/main/docs /hadoop/common/branches/branch-0.23/hadoop-common-project/hadoop-common/src/main/docs/src/documentation/content/xdocs/cluster_setup.xml /hadoop/common/branches/branch-0.23/hadoop-common-project/hadoop-common/src/main/java 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        Hudson added a comment -

        Integrated in Hadoop-Mapreduce-trunk-Commit #1531 (See https://builds.apache.org/job/Hadoop-Mapreduce-trunk-Commit/1531/)
        Merged HDFS-2349, HDFS-2729, HDFS-2726, HDFS-554, HDFS-1314, HADOOP-7910 to branch-0.23, updating CHANGES.txt for trunk.

        harsh : http://svn.apache.org/viewcvs.cgi/?root=Apache-SVN&view=rev&rev=1228567
        Files :

        • /hadoop/common/trunk/hadoop-common-project/hadoop-common/CHANGES.txt
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        Hudson added a comment - Integrated in Hadoop-Mapreduce-trunk-Commit #1531 (See https://builds.apache.org/job/Hadoop-Mapreduce-trunk-Commit/1531/ ) Merged HDFS-2349 , HDFS-2729 , HDFS-2726 , HDFS-554 , HDFS-1314 , HADOOP-7910 to branch-0.23, updating CHANGES.txt for trunk. harsh : http://svn.apache.org/viewcvs.cgi/?root=Apache-SVN&view=rev&rev=1228567 Files : /hadoop/common/trunk/hadoop-common-project/hadoop-common/CHANGES.txt /hadoop/common/trunk/hadoop-hdfs-project/hadoop-hdfs/CHANGES.txt
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        Hudson added a comment -

        Integrated in Hadoop-Mapreduce-0.23-Commit #363 (See https://builds.apache.org/job/Hadoop-Mapreduce-0.23-Commit/363/)
        merge HDFS-2349, HDFS-2729, HDFS-2726, HDFS-554, HDFS-1314, HADOOP-7910 to branch-0.23.

        harsh : http://svn.apache.org/viewcvs.cgi/?root=Apache-SVN&view=rev&rev=1228562
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        Hudson added a comment - Integrated in Hadoop-Mapreduce-0.23-Commit #363 (See https://builds.apache.org/job/Hadoop-Mapreduce-0.23-Commit/363/ ) merge HDFS-2349 , HDFS-2729 , HDFS-2726 , HDFS-554 , HDFS-1314 , HADOOP-7910 to branch-0.23. harsh : http://svn.apache.org/viewcvs.cgi/?root=Apache-SVN&view=rev&rev=1228562 Files : /hadoop/common/branches/branch-0.23 /hadoop/common/branches/branch-0.23/hadoop-common-project /hadoop/common/branches/branch-0.23/hadoop-common-project/hadoop-auth /hadoop/common/branches/branch-0.23/hadoop-common-project/hadoop-common /hadoop/common/branches/branch-0.23/hadoop-common-project/hadoop-common/CHANGES.txt /hadoop/common/branches/branch-0.23/hadoop-common-project/hadoop-common/src/main/docs /hadoop/common/branches/branch-0.23/hadoop-common-project/hadoop-common/src/main/docs/src/documentation/content/xdocs/cluster_setup.xml /hadoop/common/branches/branch-0.23/hadoop-common-project/hadoop-common/src/main/java 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        Hudson added a comment -

        Integrated in Hadoop-Common-trunk-Commit #1511 (See https://builds.apache.org/job/Hadoop-Common-trunk-Commit/1511/)
        Merged HDFS-2349, HDFS-2729, HDFS-2726, HDFS-554, HDFS-1314, HADOOP-7910 to branch-0.23, updating CHANGES.txt for trunk.

        harsh : http://svn.apache.org/viewcvs.cgi/?root=Apache-SVN&view=rev&rev=1228567
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        Hudson added a comment - Integrated in Hadoop-Common-trunk-Commit #1511 (See https://builds.apache.org/job/Hadoop-Common-trunk-Commit/1511/ ) Merged HDFS-2349 , HDFS-2729 , HDFS-2726 , HDFS-554 , HDFS-1314 , HADOOP-7910 to branch-0.23, updating CHANGES.txt for trunk. harsh : http://svn.apache.org/viewcvs.cgi/?root=Apache-SVN&view=rev&rev=1228567 Files : /hadoop/common/trunk/hadoop-common-project/hadoop-common/CHANGES.txt /hadoop/common/trunk/hadoop-hdfs-project/hadoop-hdfs/CHANGES.txt
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        Integrated in Hadoop-Hdfs-trunk-Commit #1584 (See https://builds.apache.org/job/Hadoop-Hdfs-trunk-Commit/1584/)
        Merged HDFS-2349, HDFS-2729, HDFS-2726, HDFS-554, HDFS-1314, HADOOP-7910 to branch-0.23, updating CHANGES.txt for trunk.

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        Hudson added a comment - Integrated in Hadoop-Hdfs-trunk-Commit #1584 (See https://builds.apache.org/job/Hadoop-Hdfs-trunk-Commit/1584/ ) Merged HDFS-2349 , HDFS-2729 , HDFS-2726 , HDFS-554 , HDFS-1314 , HADOOP-7910 to branch-0.23, updating CHANGES.txt for trunk. harsh : http://svn.apache.org/viewcvs.cgi/?root=Apache-SVN&view=rev&rev=1228567 Files : /hadoop/common/trunk/hadoop-common-project/hadoop-common/CHANGES.txt /hadoop/common/trunk/hadoop-hdfs-project/hadoop-hdfs/CHANGES.txt
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        Integrated in Hadoop-Common-0.23-Commit #352 (See https://builds.apache.org/job/Hadoop-Common-0.23-Commit/352/)
        merge HDFS-2349, HDFS-2729, HDFS-2726, HDFS-554, HDFS-1314, HADOOP-7910 to branch-0.23.

        harsh : http://svn.apache.org/viewcvs.cgi/?root=Apache-SVN&view=rev&rev=1228562
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        Hudson added a comment - Integrated in Hadoop-Common-0.23-Commit #352 (See https://builds.apache.org/job/Hadoop-Common-0.23-Commit/352/ ) merge HDFS-2349 , HDFS-2729 , HDFS-2726 , HDFS-554 , HDFS-1314 , HADOOP-7910 to branch-0.23. harsh : http://svn.apache.org/viewcvs.cgi/?root=Apache-SVN&view=rev&rev=1228562 Files : /hadoop/common/branches/branch-0.23 /hadoop/common/branches/branch-0.23/hadoop-common-project /hadoop/common/branches/branch-0.23/hadoop-common-project/hadoop-auth /hadoop/common/branches/branch-0.23/hadoop-common-project/hadoop-common /hadoop/common/branches/branch-0.23/hadoop-common-project/hadoop-common/CHANGES.txt /hadoop/common/branches/branch-0.23/hadoop-common-project/hadoop-common/src/main/docs /hadoop/common/branches/branch-0.23/hadoop-common-project/hadoop-common/src/main/docs/src/documentation/content/xdocs/cluster_setup.xml /hadoop/common/branches/branch-0.23/hadoop-common-project/hadoop-common/src/main/java 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        Harsh J added a comment -

        Backported to 0.23.

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        Harsh J added a comment - Backported to 0.23.
        Hide
        Hudson added a comment -

        Integrated in Hadoop-Hdfs-0.23-Commit #342 (See https://builds.apache.org/job/Hadoop-Hdfs-0.23-Commit/342/)
        merge HDFS-2349, HDFS-2729, HDFS-2726, HDFS-554, HDFS-1314, HADOOP-7910 to branch-0.23.

        harsh : http://svn.apache.org/viewcvs.cgi/?root=Apache-SVN&view=rev&rev=1228562
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        Show
        Hudson added a comment - Integrated in Hadoop-Hdfs-0.23-Commit #342 (See https://builds.apache.org/job/Hadoop-Hdfs-0.23-Commit/342/ ) merge HDFS-2349 , HDFS-2729 , HDFS-2726 , HDFS-554 , HDFS-1314 , HADOOP-7910 to branch-0.23. harsh : http://svn.apache.org/viewcvs.cgi/?root=Apache-SVN&view=rev&rev=1228562 Files : /hadoop/common/branches/branch-0.23 /hadoop/common/branches/branch-0.23/hadoop-common-project /hadoop/common/branches/branch-0.23/hadoop-common-project/hadoop-auth /hadoop/common/branches/branch-0.23/hadoop-common-project/hadoop-common /hadoop/common/branches/branch-0.23/hadoop-common-project/hadoop-common/CHANGES.txt /hadoop/common/branches/branch-0.23/hadoop-common-project/hadoop-common/src/main/docs /hadoop/common/branches/branch-0.23/hadoop-common-project/hadoop-common/src/main/docs/src/documentation/content/xdocs/cluster_setup.xml /hadoop/common/branches/branch-0.23/hadoop-common-project/hadoop-common/src/main/java /hadoop/common/branches/branch-0.23/hadoop-common-project/hadoop-common/src/main/java/org/apache/hadoop/conf/Configuration.java /hadoop/common/branches/branch-0.23/hadoop-common-project/hadoop-common/src/main/java/org/apache/hadoop/util/StringUtils.java /hadoop/common/branches/branch-0.23/hadoop-common-project/hadoop-common/src/test/core /hadoop/common/branches/branch-0.23/hadoop-common-project/hadoop-common/src/test/java/org/apache/hadoop/conf/TestConfiguration.java /hadoop/common/branches/branch-0.23/hadoop-common-project/hadoop-common/src/test/java/org/apache/hadoop/util/TestStringUtils.java /hadoop/common/branches/branch-0.23/hadoop-hdfs-project/hadoop-hdfs /hadoop/common/branches/branch-0.23/hadoop-hdfs-project/hadoop-hdfs/CHANGES.txt /hadoop/common/branches/branch-0.23/hadoop-hdfs-project/hadoop-hdfs/src/main/java /hadoop/common/branches/branch-0.23/hadoop-hdfs-project/hadoop-hdfs/src/main/java/org/apache/hadoop/hdfs/DFSClient.java /hadoop/common/branches/branch-0.23/hadoop-hdfs-project/hadoop-hdfs/src/main/java/org/apache/hadoop/hdfs/DFSOutputStream.java /hadoop/common/branches/branch-0.23/hadoop-hdfs-project/hadoop-hdfs/src/main/java/org/apache/hadoop/hdfs/server/blockmanagement/BlockInfo.java /hadoop/common/branches/branch-0.23/hadoop-hdfs-project/hadoop-hdfs/src/main/java/org/apache/hadoop/hdfs/server/blockmanagement/BlockManager.java /hadoop/common/branches/branch-0.23/hadoop-hdfs-project/hadoop-hdfs/src/main/java/org/apache/hadoop/hdfs/server/datanode/DataNode.java /hadoop/common/branches/branch-0.23/hadoop-hdfs-project/hadoop-hdfs/src/main/java/org/apache/hadoop/hdfs/server/datanode/DataXceiverServer.java /hadoop/common/branches/branch-0.23/hadoop-hdfs-project/hadoop-hdfs/src/main/java/org/apache/hadoop/hdfs/server/namenode/FSNamesystem.java /hadoop/common/branches/branch-0.23/hadoop-hdfs-project/hadoop-hdfs/src/main/java/org/apache/hadoop/hdfs/web/WebHdfsFileSystem.java 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/hadoop/common/branches/branch-0.23/hadoop-mapreduce-project/src/test/mapred/org/apache/hadoop/io/TestSequenceFileMergeProgress.java /hadoop/common/branches/branch-0.23/hadoop-mapreduce-project/src/test/mapred/org/apache/hadoop/ipc /hadoop/common/branches/branch-0.23/hadoop-mapreduce-project/src/test/mapred/org/apache/hadoop/security/authorize/TestServiceLevelAuthorization.java /hadoop/common/branches/branch-0.23/hadoop-mapreduce-project/src/test/mapred/org/apache/hadoop/test/MapredTestDriver.java /hadoop/common/branches/branch-0.23/hadoop-mapreduce-project/src/webapps/job /hadoop/common/branches/branch-0.23/hadoop-project /hadoop/common/branches/branch-0.23/hadoop-project/src/site
        Hide
        Eli Collins added a comment -

        Good candidate for merging to branch 23.

        Show
        Eli Collins added a comment - Good candidate for merging to branch 23.
        Hide
        Hudson added a comment -

        Integrated in Hadoop-Hdfs-trunk #913 (See https://builds.apache.org/job/Hadoop-Hdfs-trunk/913/)
        HDFS-554. Use System.arraycopy in BlockInfo.ensureCapacity. (harsh)

        harsh : http://svn.apache.org/viewcvs.cgi/?root=Apache-SVN&view=rev&rev=1226239
        Files :

        • /hadoop/common/trunk/hadoop-hdfs-project/hadoop-hdfs/CHANGES.txt
        • /hadoop/common/trunk/hadoop-hdfs-project/hadoop-hdfs/src/main/java/org/apache/hadoop/hdfs/server/blockmanagement/BlockInfo.java
        Show
        Hudson added a comment - Integrated in Hadoop-Hdfs-trunk #913 (See https://builds.apache.org/job/Hadoop-Hdfs-trunk/913/ ) HDFS-554 . Use System.arraycopy in BlockInfo.ensureCapacity. (harsh) harsh : http://svn.apache.org/viewcvs.cgi/?root=Apache-SVN&view=rev&rev=1226239 Files : /hadoop/common/trunk/hadoop-hdfs-project/hadoop-hdfs/CHANGES.txt /hadoop/common/trunk/hadoop-hdfs-project/hadoop-hdfs/src/main/java/org/apache/hadoop/hdfs/server/blockmanagement/BlockInfo.java
        Hide
        Hudson added a comment -

        Integrated in Hadoop-Mapreduce-trunk #945 (See https://builds.apache.org/job/Hadoop-Mapreduce-trunk/945/)
        HDFS-554. Use System.arraycopy in BlockInfo.ensureCapacity. (harsh)

        harsh : http://svn.apache.org/viewcvs.cgi/?root=Apache-SVN&view=rev&rev=1226239
        Files :

        • /hadoop/common/trunk/hadoop-hdfs-project/hadoop-hdfs/CHANGES.txt
        • /hadoop/common/trunk/hadoop-hdfs-project/hadoop-hdfs/src/main/java/org/apache/hadoop/hdfs/server/blockmanagement/BlockInfo.java
        Show
        Hudson added a comment - Integrated in Hadoop-Mapreduce-trunk #945 (See https://builds.apache.org/job/Hadoop-Mapreduce-trunk/945/ ) HDFS-554 . Use System.arraycopy in BlockInfo.ensureCapacity. (harsh) harsh : http://svn.apache.org/viewcvs.cgi/?root=Apache-SVN&view=rev&rev=1226239 Files : /hadoop/common/trunk/hadoop-hdfs-project/hadoop-hdfs/CHANGES.txt /hadoop/common/trunk/hadoop-hdfs-project/hadoop-hdfs/src/main/java/org/apache/hadoop/hdfs/server/blockmanagement/BlockInfo.java
        Hide
        Hudson added a comment -

        Integrated in Hadoop-Mapreduce-trunk-Commit #1505 (See https://builds.apache.org/job/Hadoop-Mapreduce-trunk-Commit/1505/)
        HDFS-554. Use System.arraycopy in BlockInfo.ensureCapacity. (harsh)

        harsh : http://svn.apache.org/viewcvs.cgi/?root=Apache-SVN&view=rev&rev=1226239
        Files :

        • /hadoop/common/trunk/hadoop-hdfs-project/hadoop-hdfs/CHANGES.txt
        • /hadoop/common/trunk/hadoop-hdfs-project/hadoop-hdfs/src/main/java/org/apache/hadoop/hdfs/server/blockmanagement/BlockInfo.java
        Show
        Hudson added a comment - Integrated in Hadoop-Mapreduce-trunk-Commit #1505 (See https://builds.apache.org/job/Hadoop-Mapreduce-trunk-Commit/1505/ ) HDFS-554 . Use System.arraycopy in BlockInfo.ensureCapacity. (harsh) harsh : http://svn.apache.org/viewcvs.cgi/?root=Apache-SVN&view=rev&rev=1226239 Files : /hadoop/common/trunk/hadoop-hdfs-project/hadoop-hdfs/CHANGES.txt /hadoop/common/trunk/hadoop-hdfs-project/hadoop-hdfs/src/main/java/org/apache/hadoop/hdfs/server/blockmanagement/BlockInfo.java
        Hide
        Hudson added a comment -

        Integrated in Hadoop-Common-trunk-Commit #1484 (See https://builds.apache.org/job/Hadoop-Common-trunk-Commit/1484/)
        HDFS-554. Use System.arraycopy in BlockInfo.ensureCapacity. (harsh)

        harsh : http://svn.apache.org/viewcvs.cgi/?root=Apache-SVN&view=rev&rev=1226239
        Files :

        • /hadoop/common/trunk/hadoop-hdfs-project/hadoop-hdfs/CHANGES.txt
        • /hadoop/common/trunk/hadoop-hdfs-project/hadoop-hdfs/src/main/java/org/apache/hadoop/hdfs/server/blockmanagement/BlockInfo.java
        Show
        Hudson added a comment - Integrated in Hadoop-Common-trunk-Commit #1484 (See https://builds.apache.org/job/Hadoop-Common-trunk-Commit/1484/ ) HDFS-554 . Use System.arraycopy in BlockInfo.ensureCapacity. (harsh) harsh : http://svn.apache.org/viewcvs.cgi/?root=Apache-SVN&view=rev&rev=1226239 Files : /hadoop/common/trunk/hadoop-hdfs-project/hadoop-hdfs/CHANGES.txt /hadoop/common/trunk/hadoop-hdfs-project/hadoop-hdfs/src/main/java/org/apache/hadoop/hdfs/server/blockmanagement/BlockInfo.java
        Hide
        Hudson added a comment -

        Integrated in Hadoop-Hdfs-trunk-Commit #1556 (See https://builds.apache.org/job/Hadoop-Hdfs-trunk-Commit/1556/)
        HDFS-554. Use System.arraycopy in BlockInfo.ensureCapacity. (harsh)

        harsh : http://svn.apache.org/viewcvs.cgi/?root=Apache-SVN&view=rev&rev=1226239
        Files :

        • /hadoop/common/trunk/hadoop-hdfs-project/hadoop-hdfs/CHANGES.txt
        • /hadoop/common/trunk/hadoop-hdfs-project/hadoop-hdfs/src/main/java/org/apache/hadoop/hdfs/server/blockmanagement/BlockInfo.java
        Show
        Hudson added a comment - Integrated in Hadoop-Hdfs-trunk-Commit #1556 (See https://builds.apache.org/job/Hadoop-Hdfs-trunk-Commit/1556/ ) HDFS-554 . Use System.arraycopy in BlockInfo.ensureCapacity. (harsh) harsh : http://svn.apache.org/viewcvs.cgi/?root=Apache-SVN&view=rev&rev=1226239 Files : /hadoop/common/trunk/hadoop-hdfs-project/hadoop-hdfs/CHANGES.txt /hadoop/common/trunk/hadoop-hdfs-project/hadoop-hdfs/src/main/java/org/apache/hadoop/hdfs/server/blockmanagement/BlockInfo.java
        Hide
        Harsh J added a comment -

        Findbugs result is not related to this. Committing. Thanks for the review guys!

        Show
        Harsh J added a comment - Findbugs result is not related to this. Committing. Thanks for the review guys!
        Hide
        Hadoop QA added a comment -

        -1 overall. Here are the results of testing the latest attachment
        http://issues.apache.org/jira/secure/attachment/12508666/HDFS-554.txt
        against trunk revision .

        +1 @author. The patch does not contain any @author tags.

        -1 tests included. The patch doesn't appear to include any new or modified tests.
        Please justify why no new tests are needed for this patch.
        Also please list what manual steps were performed to verify this patch.

        -1 javadoc. The javadoc tool appears to have generated 20 warning messages.

        +1 javac. The applied patch does not increase the total number of javac compiler warnings.

        +1 eclipse:eclipse. The patch built with eclipse:eclipse.

        -1 findbugs. The patch appears to introduce 1 new Findbugs (version 1.3.9) warnings.

        -1 release audit. The applied patch generated 1 release audit warnings (more than the trunk's current 0 warnings).

        +1 core tests. The patch passed unit tests in .

        +1 contrib tests. The patch passed contrib unit tests.

        Test results: https://builds.apache.org/job/PreCommit-HDFS-Build/1741//testReport/
        Release audit warnings: https://builds.apache.org/job/PreCommit-HDFS-Build/1741//artifact/trunk/patchprocess/patchReleaseAuditProblems.txt
        Findbugs warnings: https://builds.apache.org/job/PreCommit-HDFS-Build/1741//artifact/trunk/hadoop-hdfs-project/patchprocess/newPatchFindbugsWarningshadoop-hdfs.html
        Console output: https://builds.apache.org/job/PreCommit-HDFS-Build/1741//console

        This message is automatically generated.

        Show
        Hadoop QA added a comment - -1 overall. Here are the results of testing the latest attachment http://issues.apache.org/jira/secure/attachment/12508666/HDFS-554.txt against trunk revision . +1 @author. The patch does not contain any @author tags. -1 tests included. The patch doesn't appear to include any new or modified tests. Please justify why no new tests are needed for this patch. Also please list what manual steps were performed to verify this patch. -1 javadoc. The javadoc tool appears to have generated 20 warning messages. +1 javac. The applied patch does not increase the total number of javac compiler warnings. +1 eclipse:eclipse. The patch built with eclipse:eclipse. -1 findbugs. The patch appears to introduce 1 new Findbugs (version 1.3.9) warnings. -1 release audit. The applied patch generated 1 release audit warnings (more than the trunk's current 0 warnings). +1 core tests. The patch passed unit tests in . +1 contrib tests. The patch passed contrib unit tests. Test results: https://builds.apache.org/job/PreCommit-HDFS-Build/1741//testReport/ Release audit warnings: https://builds.apache.org/job/PreCommit-HDFS-Build/1741//artifact/trunk/patchprocess/patchReleaseAuditProblems.txt Findbugs warnings: https://builds.apache.org/job/PreCommit-HDFS-Build/1741//artifact/trunk/hadoop-hdfs-project/patchprocess/newPatchFindbugsWarningshadoop-hdfs.html Console output: https://builds.apache.org/job/PreCommit-HDFS-Build/1741//console This message is automatically generated.
        Hide
        Harsh J added a comment -

        For some reason patch didn't trigger a jenkins build. Re-upping same thing.

        Show
        Harsh J added a comment - For some reason patch didn't trigger a jenkins build. Re-upping same thing.
        Hide
        Aaron T. Myers added a comment -

        The patch looks good to me. +1 pending clean Jenkins results.

        Show
        Aaron T. Myers added a comment - The patch looks good to me. +1 pending clean Jenkins results.
        Hide
        Harsh J added a comment -

        Thanks for that catch Todd, you're right

        Show
        Harsh J added a comment - Thanks for that catch Todd, you're right
        Hide
        Todd Lipcon added a comment -

        I think we want to use last*3 instead of old.length here - it may be a little shorter.

        Show
        Todd Lipcon added a comment - I think we want to use last*3 instead of old.length here - it may be a little shorter.
        Hide
        Hadoop QA added a comment -

        -1 overall. Here are the results of testing the latest attachment
        http://issues.apache.org/jira/secure/attachment/12504505/HDFS-554.patch
        against trunk revision .

        +1 @author. The patch does not contain any @author tags.

        -1 tests included. The patch doesn't appear to include any new or modified tests.
        Please justify why no new tests are needed for this patch.
        Also please list what manual steps were performed to verify this patch.

        +1 javadoc. The javadoc tool did not generate any warning messages.

        +1 javac. The applied patch does not increase the total number of javac compiler warnings.

        +1 findbugs. The patch does not introduce any new Findbugs (version 1.3.9) warnings.

        +1 release audit. The applied patch does not increase the total number of release audit warnings.

        -1 core tests. The patch failed these unit tests:
        org.apache.hadoop.fs.viewfs.TestViewFsHdfs

        +1 contrib tests. The patch passed contrib unit tests.

        Test results: https://builds.apache.org/job/PreCommit-HDFS-Build/1593//testReport/
        Console output: https://builds.apache.org/job/PreCommit-HDFS-Build/1593//console

        This message is automatically generated.

        Show
        Hadoop QA added a comment - -1 overall. Here are the results of testing the latest attachment http://issues.apache.org/jira/secure/attachment/12504505/HDFS-554.patch against trunk revision . +1 @author. The patch does not contain any @author tags. -1 tests included. The patch doesn't appear to include any new or modified tests. Please justify why no new tests are needed for this patch. Also please list what manual steps were performed to verify this patch. +1 javadoc. The javadoc tool did not generate any warning messages. +1 javac. The applied patch does not increase the total number of javac compiler warnings. +1 findbugs. The patch does not introduce any new Findbugs (version 1.3.9) warnings. +1 release audit. The applied patch does not increase the total number of release audit warnings. -1 core tests. The patch failed these unit tests: org.apache.hadoop.fs.viewfs.TestViewFsHdfs +1 contrib tests. The patch passed contrib unit tests. Test results: https://builds.apache.org/job/PreCommit-HDFS-Build/1593//testReport/ Console output: https://builds.apache.org/job/PreCommit-HDFS-Build/1593//console This message is automatically generated.
        Hide
        Harsh J added a comment -

        The difference is apparently very clear, in terms of speed, from even a silly test:

        public class TestSpeed {
          public static void main(String[] args) {
            // Load about a million "Integers".
            Object[] arr = new Object[1000000];
            for (Integer i = 0; i < 1000000; i++) {
              arr[i] = i;
            }
            long now = System.currentTimeMillis();
            // Copy iteratively into a new sized array.
            Object[] arr2 = new Object[3000000];
            for (Integer i = 0; i < arr.length; i++) {
              arr2[i] = arr[i];
            }
            System.out.println(System.currentTimeMillis() - now);
            now = System.currentTimeMillis();
            // arraycopy into a new sized array.
            Object[] arr3 = new Object[3000000];
            System.arraycopy(arr, 0, arr3, 0, arr.length);
            System.out.println(System.currentTimeMillis() - now);
          }
        }
        

        A few runs do, for example:

        Loop System.arraycopy
        59 17
        54 14
        52 14
        52 15
        Show
        Harsh J added a comment - The difference is apparently very clear, in terms of speed, from even a silly test: public class TestSpeed { public static void main( String [] args) { // Load about a million "Integers" . Object [] arr = new Object [1000000]; for ( Integer i = 0; i < 1000000; i++) { arr[i] = i; } long now = System .currentTimeMillis(); // Copy iteratively into a new sized array. Object [] arr2 = new Object [3000000]; for ( Integer i = 0; i < arr.length; i++) { arr2[i] = arr[i]; } System .out.println( System .currentTimeMillis() - now); now = System .currentTimeMillis(); // arraycopy into a new sized array. Object [] arr3 = new Object [3000000]; System .arraycopy(arr, 0, arr3, 0, arr.length); System .out.println( System .currentTimeMillis() - now); } } A few runs do, for example: Loop System.arraycopy 59 17 54 14 52 14 52 15
        Hide
        Suresh Srinivas added a comment -

        Also the array size that we are copying is generally 9 (assuming 3 replicas)

        Show
        Suresh Srinivas added a comment - Also the array size that we are copying is generally 9 (assuming 3 replicas)
        Hide
        Tsz Wo Nicholas Sze added a comment -

        I agree that we should use System.arraycopy() in general. We should do some benchmarks for this issue.

        Show
        Tsz Wo Nicholas Sze added a comment - I agree that we should use System.arraycopy() in general. We should do some benchmarks for this issue.

          People

          • Assignee:
            Harsh J
            Reporter:
            Steve Loughran
          • Votes:
            0 Vote for this issue
            Watchers:
            2 Start watching this issue

            Dates

            • Created:
              Updated:
              Resolved:

              Development