Hadoop HDFS
  1. Hadoop HDFS
  2. HDFS-6524

chooseDataNode decides retry times considering with block replica number

    Details

    • Type: Improvement Improvement
    • Status: Patch Available
    • Priority: Minor Minor
    • Resolution: Unresolved
    • Affects Version/s: 3.0.0
    • Fix Version/s: None
    • Component/s: hdfs-client
    • Labels:

      Description

      Currently the chooseDataNode() does retry with the setting: dfsClientConf.maxBlockAcquireFailures, which by default is 3 (DFS_CLIENT_MAX_BLOCK_ACQUIRE_FAILURES_DEFAULT = 3), it would be better having another option, block replication factor. One cluster with only two block replica setting, or using Reed-solomon encoding solution with one replica factor. It helps to reduce the long tail latency.

        Activity

        Hide
        Hadoop QA added a comment -

        +1 overall. Here are the results of testing the latest attachment
        http://issues.apache.org/jira/secure/attachment/12650259/HDFS-6524.txt
        against trunk revision .

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

        +1 tests included. The patch appears to include 1 new or modified test files.

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

        +1 javadoc. There were no new javadoc warning messages.

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

        +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 passed unit tests in hadoop-hdfs-project/hadoop-hdfs.

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

        Test results: https://builds.apache.org/job/PreCommit-HDFS-Build/7110//testReport/
        Console output: https://builds.apache.org/job/PreCommit-HDFS-Build/7110//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/12650259/HDFS-6524.txt against trunk revision . +1 @author . The patch does not contain any @author tags. +1 tests included . The patch appears to include 1 new or modified test files. +1 javac . The applied patch does not increase the total number of javac compiler warnings. +1 javadoc . There were no new javadoc warning messages. +1 eclipse:eclipse . The patch built with eclipse:eclipse. +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 passed unit tests in hadoop-hdfs-project/hadoop-hdfs. +1 contrib tests . The patch passed contrib unit tests. Test results: https://builds.apache.org/job/PreCommit-HDFS-Build/7110//testReport/ Console output: https://builds.apache.org/job/PreCommit-HDFS-Build/7110//console This message is automatically generated.
        Hide
        Hadoop QA added a comment -

        -1 overall. Here are the results of testing the latest attachment
        http://issues.apache.org/jira/secure/attachment/12650227/HDFS-6524.txt
        against trunk revision .

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

        +1 tests included. The patch appears to include 1 new or modified test files.

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

        +1 javadoc. There were no new javadoc warning messages.

        +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 does not increase the total number of release audit warnings.

        +1 core tests. The patch passed unit tests in hadoop-hdfs-project/hadoop-hdfs.

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

        Test results: https://builds.apache.org/job/PreCommit-HDFS-Build/7106//testReport/
        Findbugs warnings: https://builds.apache.org/job/PreCommit-HDFS-Build/7106//artifact/trunk/patchprocess/newPatchFindbugsWarningshadoop-hdfs.html
        Console output: https://builds.apache.org/job/PreCommit-HDFS-Build/7106//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/12650227/HDFS-6524.txt against trunk revision . +1 @author . The patch does not contain any @author tags. +1 tests included . The patch appears to include 1 new or modified test files. +1 javac . The applied patch does not increase the total number of javac compiler warnings. +1 javadoc . There were no new javadoc warning messages. +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 does not increase the total number of release audit warnings. +1 core tests . The patch passed unit tests in hadoop-hdfs-project/hadoop-hdfs. +1 contrib tests . The patch passed contrib unit tests. Test results: https://builds.apache.org/job/PreCommit-HDFS-Build/7106//testReport/ Findbugs warnings: https://builds.apache.org/job/PreCommit-HDFS-Build/7106//artifact/trunk/patchprocess/newPatchFindbugsWarningshadoop-hdfs.html Console output: https://builds.apache.org/job/PreCommit-HDFS-Build/7106//console This message is automatically generated.

          People

          • Assignee:
            Liang Xie
            Reporter:
            Liang Xie
          • Votes:
            0 Vote for this issue
            Watchers:
            2 Start watching this issue

            Dates

            • Created:
              Updated:

              Development