Details

    • Type: Bug Bug
    • Status: Closed
    • Priority: Major Major
    • Resolution: Fixed
    • Affects Version/s: 2.0.0-alpha
    • Fix Version/s: 0.23.3, 2.0.2-alpha
    • Component/s: nodemanager
    • Labels:
      None

      Description

      TestIndexCache is intermittently failing due to a race condition. Up on inspection of IndexCache implementation, more potential issues have been discovered.

      1. mapreduce-4384.patch
        3 kB
        Kihwal Lee
      2. mapreduce-4384.patch
        8 kB
        Kihwal Lee
      3. mapreduce-4384.patch
        6 kB
        Kihwal Lee
      4. mapreduce-4384.patch
        6 kB
        Kihwal Lee

        Activity

        Hide
        Kihwal Lee added a comment -

        When TestIndexCache failed, the log contained a warning message, "Map IDxxxx not found in queue!!". The queue is used to figure out what to drop in its the FIFO cache replacement policy. This message indicates that the cache entry was freed by a removeMap() call, but the corresponding entry was not found in the queue.

        This can happen if removeMap() is called while the cache entry is being loaded. If a new incomplete entry is added to the cache between cache.get(mapId) and {[cache.remove{{mapId}} in removeMap(), the new entry will be removed from the cache. Further, if totalMemoryUsed is updated before the entry is fully loaded, it will end up subtracting zero from the usage. When the loading is complete in readIndexFileToCache(), totalMemoryUsed will be incremented, but since it was already removed from the cache, there is no way it can be decremented. Hence the discrepancy in memory usage tracking.

        This issue can be fixed by adding one more condition to the first check in removeMap()

           IndexInformation info = cache.get(mapId);
         - if ((info != null) && (info.getSize() == 0)) {
         + if (info == null || ((info != null) && (info.getSize() == 0))) {
             return;
            }
        

        Another potential issue is in readIndexFileToCache(). When two different threads are trying to add the same entry to the cache, there can be a deadlock. When Thread A puts a new IndexInformation object in the cache, Thread B can come in a bit late and do wait() on this object to be fully ready. The wait() is inside the synchronized(info) block and info is the new object it just found in the cache. But Thread A also tries to update the same object and do notifyAll() inside a synchronized() block on it. This results in a deadlock.

        Show
        Kihwal Lee added a comment - When TestIndexCache failed, the log contained a warning message, "Map IDxxxx not found in queue!!". The queue is used to figure out what to drop in its the FIFO cache replacement policy. This message indicates that the cache entry was freed by a removeMap() call, but the corresponding entry was not found in the queue. This can happen if removeMap() is called while the cache entry is being loaded. If a new incomplete entry is added to the cache between cache.get(mapId) and {[cache.remove{{mapId}} in removeMap() , the new entry will be removed from the cache. Further, if totalMemoryUsed is updated before the entry is fully loaded, it will end up subtracting zero from the usage. When the loading is complete in readIndexFileToCache() , totalMemoryUsed will be incremented, but since it was already removed from the cache, there is no way it can be decremented. Hence the discrepancy in memory usage tracking. This issue can be fixed by adding one more condition to the first check in removeMap() IndexInformation info = cache.get(mapId); - if ((info != null) && (info.getSize() == 0)) { + if (info == null || ((info != null) && (info.getSize() == 0))) { return; } Another potential issue is in readIndexFileToCache() . When two different threads are trying to add the same entry to the cache, there can be a deadlock. When Thread A puts a new IndexInformation object in the cache, Thread B can come in a bit late and do wait() on this object to be fully ready. The wait() is inside the synchronized(info) block and info is the new object it just found in the cache. But Thread A also tries to update the same object and do notifyAll() inside a synchronized() block on it. This results in a deadlock.
        Hide
        Kihwal Lee added a comment -

        branch-1 has similar problem, but its usage is different. While ShuffleHandler does not call IndexCache#removeMap() in 2.0, TaskTracker does call it. The race seems very rare, if ever actually happens. I will work on a branch-1 version, once the trunk version is done.

        Show
        Kihwal Lee added a comment - branch-1 has similar problem, but its usage is different. While ShuffleHandler does not call IndexCache#removeMap() in 2.0, TaskTracker does call it. The race seems very rare, if ever actually happens. I will work on a branch-1 version, once the trunk version is done.
        Hide
        Kihwal Lee added a comment -

        A new test case tries to create the new entry race condition. I ran it many times, but only got it to happen once.

        Show
        Kihwal Lee added a comment - A new test case tries to create the new entry race condition. I ran it many times, but only got it to happen once.
        Hide
        Hadoop QA added a comment -

        -1 overall. Here are the results of testing the latest attachment
        http://issues.apache.org/jira/secure/attachment/12533908/mapreduce-4384.patch
        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 generated 2071 javac compiler warnings (more than the trunk's current 2070 warnings).

        +1 javadoc. The javadoc tool did not generate any 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 failed these unit tests in hadoop-mapreduce-project/hadoop-mapreduce-client/hadoop-mapreduce-client-core hadoop-mapreduce-project/hadoop-mapreduce-client/hadoop-mapreduce-client-jobclient:

        org.apache.hadoop.mapred.jobcontrol.TestLocalJobControl
        org.apache.hadoop.mapreduce.lib.jobcontrol.TestMapReduceJobControl

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

        Test results: https://builds.apache.org/job/PreCommit-MAPREDUCE-Build/2529//testReport/
        Javac warnings: https://builds.apache.org/job/PreCommit-MAPREDUCE-Build/2529//artifact/trunk/trunk/patchprocess/diffJavacWarnings.txt
        Console output: https://builds.apache.org/job/PreCommit-MAPREDUCE-Build/2529//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/12533908/mapreduce-4384.patch 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 generated 2071 javac compiler warnings (more than the trunk's current 2070 warnings). +1 javadoc. The javadoc tool did not generate any 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 failed these unit tests in hadoop-mapreduce-project/hadoop-mapreduce-client/hadoop-mapreduce-client-core hadoop-mapreduce-project/hadoop-mapreduce-client/hadoop-mapreduce-client-jobclient: org.apache.hadoop.mapred.jobcontrol.TestLocalJobControl org.apache.hadoop.mapreduce.lib.jobcontrol.TestMapReduceJobControl +1 contrib tests. The patch passed contrib unit tests. Test results: https://builds.apache.org/job/PreCommit-MAPREDUCE-Build/2529//testReport/ Javac warnings: https://builds.apache.org/job/PreCommit-MAPREDUCE-Build/2529//artifact/trunk/trunk/patchprocess/diffJavacWarnings.txt Console output: https://builds.apache.org/job/PreCommit-MAPREDUCE-Build/2529//console This message is automatically generated.
        Hide
        Kihwal Lee added a comment -

        The two test failures seem to be caused by MAPREDUCE-4371. It reliably fails without this patch applied.

        Show
        Kihwal Lee added a comment - The two test failures seem to be caused by MAPREDUCE-4371 . It reliably fails without this patch applied.
        Hide
        Kihwal Lee added a comment -

        MAPREDUCE-4253 moved the test file to a different directory.
        I will post an updated patch.

        Show
        Kihwal Lee added a comment - MAPREDUCE-4253 moved the test file to a different directory. I will post an updated patch.
        Hide
        Hadoop QA added a comment -

        -1 overall. Here are the results of testing the latest attachment
        http://issues.apache.org/jira/secure/attachment/12534291/mapreduce-4384.patch
        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 generated 2070 javac compiler warnings (more than the trunk's current 2069 warnings).

        +1 javadoc. The javadoc tool did not generate any 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-mapreduce-project/hadoop-mapreduce-client/hadoop-mapreduce-client-core.

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

        Test results: https://builds.apache.org/job/PreCommit-MAPREDUCE-Build/2539//testReport/
        Javac warnings: https://builds.apache.org/job/PreCommit-MAPREDUCE-Build/2539//artifact/trunk/trunk/patchprocess/diffJavacWarnings.txt
        Console output: https://builds.apache.org/job/PreCommit-MAPREDUCE-Build/2539//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/12534291/mapreduce-4384.patch 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 generated 2070 javac compiler warnings (more than the trunk's current 2069 warnings). +1 javadoc. The javadoc tool did not generate any 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-mapreduce-project/hadoop-mapreduce-client/hadoop-mapreduce-client-core. +1 contrib tests. The patch passed contrib unit tests. Test results: https://builds.apache.org/job/PreCommit-MAPREDUCE-Build/2539//testReport/ Javac warnings: https://builds.apache.org/job/PreCommit-MAPREDUCE-Build/2539//artifact/trunk/trunk/patchprocess/diffJavacWarnings.txt Console output: https://builds.apache.org/job/PreCommit-MAPREDUCE-Build/2539//console This message is automatically generated.
        Hide
        Kihwal Lee added a comment -

        I posted an updated patch but the PreCommit-Admin build job hasn't run for almost two hours...

        Show
        Kihwal Lee added a comment - I posted an updated patch but the PreCommit-Admin build job hasn't run for almost two hours...
        Hide
        Kihwal Lee added a comment -

        I ran test-patch manually. There were 2066 (-3) javac warnings with the new patch.

        Show
        Kihwal Lee added a comment - I ran test-patch manually. There were 2066 (-3) javac warnings with the new patch.
        Hide
        Hadoop QA added a comment -

        +1 overall. Here are the results of testing the latest attachment
        http://issues.apache.org/jira/secure/attachment/12534306/mapreduce-4384.patch
        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. The javadoc tool did not generate any 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-mapreduce-project/hadoop-mapreduce-client/hadoop-mapreduce-client-core.

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

        Test results: https://builds.apache.org/job/PreCommit-MAPREDUCE-Build/2541//testReport/
        Console output: https://builds.apache.org/job/PreCommit-MAPREDUCE-Build/2541//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/12534306/mapreduce-4384.patch 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. The javadoc tool did not generate any 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-mapreduce-project/hadoop-mapreduce-client/hadoop-mapreduce-client-core. +1 contrib tests. The patch passed contrib unit tests. Test results: https://builds.apache.org/job/PreCommit-MAPREDUCE-Build/2541//testReport/ Console output: https://builds.apache.org/job/PreCommit-MAPREDUCE-Build/2541//console This message is automatically generated.
        Hide
        Thomas Graves added a comment -

        Since the new testcase isn't very reliable at reproducing the issue I propose we just remove it. Otherwise +1.

        Show
        Thomas Graves added a comment - Since the new testcase isn't very reliable at reproducing the issue I propose we just remove it. Otherwise +1.
        Hide
        Kihwal Lee added a comment -

        Attaching new patch without the test case.

        Show
        Kihwal Lee added a comment - Attaching new patch without the test case.
        Hide
        Thomas Graves added a comment -

        +1. Thanks Kihwal. I've committed this to trunk, branch-2, and branch-0.23.

        Show
        Thomas Graves added a comment - +1. Thanks Kihwal. I've committed this to trunk, branch-2, and branch-0.23.
        Hide
        Hudson added a comment -

        Integrated in Hadoop-Mapreduce-trunk-Commit #2444 (See https://builds.apache.org/job/Hadoop-Mapreduce-trunk-Commit/2444/)
        MAPREDUCE-4384. Race conditions in IndexCache (Kihwal Lee via tgraves) (Revision 1357937)

        Result = FAILURE
        tgraves : http://svn.apache.org/viewcvs.cgi/?root=Apache-SVN&view=rev&rev=1357937
        Files :

        • /hadoop/common/trunk/hadoop-mapreduce-project/CHANGES.txt
        • /hadoop/common/trunk/hadoop-mapreduce-project/hadoop-mapreduce-client/hadoop-mapreduce-client-core/src/main/java/org/apache/hadoop/mapred/IndexCache.java
        Show
        Hudson added a comment - Integrated in Hadoop-Mapreduce-trunk-Commit #2444 (See https://builds.apache.org/job/Hadoop-Mapreduce-trunk-Commit/2444/ ) MAPREDUCE-4384 . Race conditions in IndexCache (Kihwal Lee via tgraves) (Revision 1357937) Result = FAILURE tgraves : http://svn.apache.org/viewcvs.cgi/?root=Apache-SVN&view=rev&rev=1357937 Files : /hadoop/common/trunk/hadoop-mapreduce-project/CHANGES.txt /hadoop/common/trunk/hadoop-mapreduce-project/hadoop-mapreduce-client/hadoop-mapreduce-client-core/src/main/java/org/apache/hadoop/mapred/IndexCache.java
        Hide
        Hudson added a comment -

        Integrated in Hadoop-Common-trunk-Commit #2427 (See https://builds.apache.org/job/Hadoop-Common-trunk-Commit/2427/)
        MAPREDUCE-4384. Race conditions in IndexCache (Kihwal Lee via tgraves) (Revision 1357937)

        Result = SUCCESS
        tgraves : http://svn.apache.org/viewcvs.cgi/?root=Apache-SVN&view=rev&rev=1357937
        Files :

        • /hadoop/common/trunk/hadoop-mapreduce-project/CHANGES.txt
        • /hadoop/common/trunk/hadoop-mapreduce-project/hadoop-mapreduce-client/hadoop-mapreduce-client-core/src/main/java/org/apache/hadoop/mapred/IndexCache.java
        Show
        Hudson added a comment - Integrated in Hadoop-Common-trunk-Commit #2427 (See https://builds.apache.org/job/Hadoop-Common-trunk-Commit/2427/ ) MAPREDUCE-4384 . Race conditions in IndexCache (Kihwal Lee via tgraves) (Revision 1357937) Result = SUCCESS tgraves : http://svn.apache.org/viewcvs.cgi/?root=Apache-SVN&view=rev&rev=1357937 Files : /hadoop/common/trunk/hadoop-mapreduce-project/CHANGES.txt /hadoop/common/trunk/hadoop-mapreduce-project/hadoop-mapreduce-client/hadoop-mapreduce-client-core/src/main/java/org/apache/hadoop/mapred/IndexCache.java
        Hide
        Hudson added a comment -

        Integrated in Hadoop-Hdfs-trunk-Commit #2495 (See https://builds.apache.org/job/Hadoop-Hdfs-trunk-Commit/2495/)
        MAPREDUCE-4384. Race conditions in IndexCache (Kihwal Lee via tgraves) (Revision 1357937)

        Result = SUCCESS
        tgraves : http://svn.apache.org/viewcvs.cgi/?root=Apache-SVN&view=rev&rev=1357937
        Files :

        • /hadoop/common/trunk/hadoop-mapreduce-project/CHANGES.txt
        • /hadoop/common/trunk/hadoop-mapreduce-project/hadoop-mapreduce-client/hadoop-mapreduce-client-core/src/main/java/org/apache/hadoop/mapred/IndexCache.java
        Show
        Hudson added a comment - Integrated in Hadoop-Hdfs-trunk-Commit #2495 (See https://builds.apache.org/job/Hadoop-Hdfs-trunk-Commit/2495/ ) MAPREDUCE-4384 . Race conditions in IndexCache (Kihwal Lee via tgraves) (Revision 1357937) Result = SUCCESS tgraves : http://svn.apache.org/viewcvs.cgi/?root=Apache-SVN&view=rev&rev=1357937 Files : /hadoop/common/trunk/hadoop-mapreduce-project/CHANGES.txt /hadoop/common/trunk/hadoop-mapreduce-project/hadoop-mapreduce-client/hadoop-mapreduce-client-core/src/main/java/org/apache/hadoop/mapred/IndexCache.java
        Hide
        Hudson added a comment -

        Integrated in Hadoop-Hdfs-trunk #1095 (See https://builds.apache.org/job/Hadoop-Hdfs-trunk/1095/)
        MAPREDUCE-4384. Race conditions in IndexCache (Kihwal Lee via tgraves) (Revision 1357937)

        Result = FAILURE
        tgraves : http://svn.apache.org/viewcvs.cgi/?root=Apache-SVN&view=rev&rev=1357937
        Files :

        • /hadoop/common/trunk/hadoop-mapreduce-project/CHANGES.txt
        • /hadoop/common/trunk/hadoop-mapreduce-project/hadoop-mapreduce-client/hadoop-mapreduce-client-core/src/main/java/org/apache/hadoop/mapred/IndexCache.java
        Show
        Hudson added a comment - Integrated in Hadoop-Hdfs-trunk #1095 (See https://builds.apache.org/job/Hadoop-Hdfs-trunk/1095/ ) MAPREDUCE-4384 . Race conditions in IndexCache (Kihwal Lee via tgraves) (Revision 1357937) Result = FAILURE tgraves : http://svn.apache.org/viewcvs.cgi/?root=Apache-SVN&view=rev&rev=1357937 Files : /hadoop/common/trunk/hadoop-mapreduce-project/CHANGES.txt /hadoop/common/trunk/hadoop-mapreduce-project/hadoop-mapreduce-client/hadoop-mapreduce-client-core/src/main/java/org/apache/hadoop/mapred/IndexCache.java
        Hide
        Hudson added a comment -

        Integrated in Hadoop-Mapreduce-trunk #1128 (See https://builds.apache.org/job/Hadoop-Mapreduce-trunk/1128/)
        MAPREDUCE-4384. Race conditions in IndexCache (Kihwal Lee via tgraves) (Revision 1357937)

        Result = SUCCESS
        tgraves : http://svn.apache.org/viewcvs.cgi/?root=Apache-SVN&view=rev&rev=1357937
        Files :

        • /hadoop/common/trunk/hadoop-mapreduce-project/CHANGES.txt
        • /hadoop/common/trunk/hadoop-mapreduce-project/hadoop-mapreduce-client/hadoop-mapreduce-client-core/src/main/java/org/apache/hadoop/mapred/IndexCache.java
        Show
        Hudson added a comment - Integrated in Hadoop-Mapreduce-trunk #1128 (See https://builds.apache.org/job/Hadoop-Mapreduce-trunk/1128/ ) MAPREDUCE-4384 . Race conditions in IndexCache (Kihwal Lee via tgraves) (Revision 1357937) Result = SUCCESS tgraves : http://svn.apache.org/viewcvs.cgi/?root=Apache-SVN&view=rev&rev=1357937 Files : /hadoop/common/trunk/hadoop-mapreduce-project/CHANGES.txt /hadoop/common/trunk/hadoop-mapreduce-project/hadoop-mapreduce-client/hadoop-mapreduce-client-core/src/main/java/org/apache/hadoop/mapred/IndexCache.java
        Hide
        Hudson added a comment -

        Integrated in Hadoop-Hdfs-0.23-Build #305 (See https://builds.apache.org/job/Hadoop-Hdfs-0.23-Build/305/)
        merge -r 1357939:1357940 from branch-2. FIXES: MAPREDUCE-4384 (Revision 1357942)

        Result = SUCCESS
        tgraves : http://svn.apache.org/viewcvs.cgi/?root=Apache-SVN&view=rev&rev=1357942
        Files :

        • /hadoop/common/branches/branch-0.23/hadoop-mapreduce-project/CHANGES.txt
        • /hadoop/common/branches/branch-0.23/hadoop-mapreduce-project/hadoop-mapreduce-client/hadoop-mapreduce-client-core/src/main/java/org/apache/hadoop/mapred/IndexCache.java
        Show
        Hudson added a comment - Integrated in Hadoop-Hdfs-0.23-Build #305 (See https://builds.apache.org/job/Hadoop-Hdfs-0.23-Build/305/ ) merge -r 1357939:1357940 from branch-2. FIXES: MAPREDUCE-4384 (Revision 1357942) Result = SUCCESS tgraves : http://svn.apache.org/viewcvs.cgi/?root=Apache-SVN&view=rev&rev=1357942 Files : /hadoop/common/branches/branch-0.23/hadoop-mapreduce-project/CHANGES.txt /hadoop/common/branches/branch-0.23/hadoop-mapreduce-project/hadoop-mapreduce-client/hadoop-mapreduce-client-core/src/main/java/org/apache/hadoop/mapred/IndexCache.java
        Hide
        Hudson added a comment -

        Integrated in Hadoop-Hdfs-trunk-Commit #2508 (See https://builds.apache.org/job/Hadoop-Hdfs-trunk-Commit/2508/)
        MAPREDUCE-4384. Race conditions in IndexCache (Kihwal Lee via tgraves) (Revision 1357937)

        Result = SUCCESS
        tgraves : http://svn.apache.org/viewcvs.cgi/?root=Apache-SVN&view=rev&rev=1357937
        Files :

        • /hadoop/common/trunk/hadoop-mapreduce-project/CHANGES.txt
        • /hadoop/common/trunk/hadoop-mapreduce-project/hadoop-mapreduce-client/hadoop-mapreduce-client-core/src/main/java/org/apache/hadoop/mapred/IndexCache.java
        Show
        Hudson added a comment - Integrated in Hadoop-Hdfs-trunk-Commit #2508 (See https://builds.apache.org/job/Hadoop-Hdfs-trunk-Commit/2508/ ) MAPREDUCE-4384 . Race conditions in IndexCache (Kihwal Lee via tgraves) (Revision 1357937) Result = SUCCESS tgraves : http://svn.apache.org/viewcvs.cgi/?root=Apache-SVN&view=rev&rev=1357937 Files : /hadoop/common/trunk/hadoop-mapreduce-project/CHANGES.txt /hadoop/common/trunk/hadoop-mapreduce-project/hadoop-mapreduce-client/hadoop-mapreduce-client-core/src/main/java/org/apache/hadoop/mapred/IndexCache.java
        Hide
        Hudson added a comment -

        Integrated in Hadoop-Common-trunk-Commit #2441 (See https://builds.apache.org/job/Hadoop-Common-trunk-Commit/2441/)
        MAPREDUCE-4384. Race conditions in IndexCache (Kihwal Lee via tgraves) (Revision 1357937)

        Result = SUCCESS
        tgraves : http://svn.apache.org/viewcvs.cgi/?root=Apache-SVN&view=rev&rev=1357937
        Files :

        • /hadoop/common/trunk/hadoop-mapreduce-project/CHANGES.txt
        • /hadoop/common/trunk/hadoop-mapreduce-project/hadoop-mapreduce-client/hadoop-mapreduce-client-core/src/main/java/org/apache/hadoop/mapred/IndexCache.java
        Show
        Hudson added a comment - Integrated in Hadoop-Common-trunk-Commit #2441 (See https://builds.apache.org/job/Hadoop-Common-trunk-Commit/2441/ ) MAPREDUCE-4384 . Race conditions in IndexCache (Kihwal Lee via tgraves) (Revision 1357937) Result = SUCCESS tgraves : http://svn.apache.org/viewcvs.cgi/?root=Apache-SVN&view=rev&rev=1357937 Files : /hadoop/common/trunk/hadoop-mapreduce-project/CHANGES.txt /hadoop/common/trunk/hadoop-mapreduce-project/hadoop-mapreduce-client/hadoop-mapreduce-client-core/src/main/java/org/apache/hadoop/mapred/IndexCache.java

          People

          • Assignee:
            Kihwal Lee
            Reporter:
            Kihwal Lee
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            Dates

            • Created:
              Updated:
              Resolved:

              Development