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  1. Hadoop HDFS
  2. HDFS-9250

Add Precondition check to LocatedBlock#addCachedLoc

    Details

    • Target Version/s:

      Description

      We may see the following exception:

      java.lang.ArrayStoreException
      at java.util.ArrayList.toArray(ArrayList.java:389)
      at org.apache.hadoop.hdfs.protocol.LocatedBlock.addCachedLoc(LocatedBlock.java:205)
      at org.apache.hadoop.hdfs.server.namenode.CacheManager.setCachedLocations(CacheManager.java:907)
      at org.apache.hadoop.hdfs.server.namenode.FSNamesystem.getBlockLocationsUpdateTimes(FSNamesystem.java:1974)
      at org.apache.hadoop.hdfs.server.namenode.FSNamesystem.getBlockLocationsInt(FSNamesystem.java:1873)
      

      The cause is that in LocatedBlock.java, when addCachedLoc:

      • Passed in parameter loc, which is type DatanodeDescriptor, is added to cachedList
      • cachedList was assigned to EMPTY_LOCS, which is type DatanodeInfoWithStorage.

      Both DatanodeDescriptor and DatanodeInfoWithStorage are subclasses of DatanodeInfo but do not inherit from each other, resulting in the ArrayStoreException.

      1. HDFS-9250.002.patch
        3 kB
        Xiao Chen
      2. HDFS-9250.001.patch
        3 kB
        Xiao Chen

        Activity

        Hide
        hudson Hudson added a comment -

        FAILURE: Integrated in Hadoop-Hdfs-trunk-Java8 #516 (See https://builds.apache.org/job/Hadoop-Hdfs-trunk-Java8/516/)
        HDFS-9250. Add Precondition check to LocatedBlock#addCachedLoc. (wang: rev 8175c4f6b9fc17ff2e0fc568d798f9b6f2487696)

        • hadoop-hdfs-project/hadoop-hdfs/CHANGES.txt
        • hadoop-hdfs-project/hadoop-hdfs-client/src/main/java/org/apache/hadoop/hdfs/protocol/LocatedBlock.java
        • hadoop-hdfs-project/hadoop-hdfs/src/test/java/org/apache/hadoop/hdfs/protocol/TestLocatedBlock.java
        Show
        hudson Hudson added a comment - FAILURE: Integrated in Hadoop-Hdfs-trunk-Java8 #516 (See https://builds.apache.org/job/Hadoop-Hdfs-trunk-Java8/516/ ) HDFS-9250 . Add Precondition check to LocatedBlock#addCachedLoc. (wang: rev 8175c4f6b9fc17ff2e0fc568d798f9b6f2487696) hadoop-hdfs-project/hadoop-hdfs/CHANGES.txt hadoop-hdfs-project/hadoop-hdfs-client/src/main/java/org/apache/hadoop/hdfs/protocol/LocatedBlock.java hadoop-hdfs-project/hadoop-hdfs/src/test/java/org/apache/hadoop/hdfs/protocol/TestLocatedBlock.java
        Hide
        hudson Hudson added a comment -

        FAILURE: Integrated in Hadoop-Hdfs-trunk #2453 (See https://builds.apache.org/job/Hadoop-Hdfs-trunk/2453/)
        HDFS-9250. Add Precondition check to LocatedBlock#addCachedLoc. (wang: rev 8175c4f6b9fc17ff2e0fc568d798f9b6f2487696)

        • hadoop-hdfs-project/hadoop-hdfs-client/src/main/java/org/apache/hadoop/hdfs/protocol/LocatedBlock.java
        • hadoop-hdfs-project/hadoop-hdfs/src/test/java/org/apache/hadoop/hdfs/protocol/TestLocatedBlock.java
        • hadoop-hdfs-project/hadoop-hdfs/CHANGES.txt
        Show
        hudson Hudson added a comment - FAILURE: Integrated in Hadoop-Hdfs-trunk #2453 (See https://builds.apache.org/job/Hadoop-Hdfs-trunk/2453/ ) HDFS-9250 . Add Precondition check to LocatedBlock#addCachedLoc. (wang: rev 8175c4f6b9fc17ff2e0fc568d798f9b6f2487696) hadoop-hdfs-project/hadoop-hdfs-client/src/main/java/org/apache/hadoop/hdfs/protocol/LocatedBlock.java hadoop-hdfs-project/hadoop-hdfs/src/test/java/org/apache/hadoop/hdfs/protocol/TestLocatedBlock.java hadoop-hdfs-project/hadoop-hdfs/CHANGES.txt
        Hide
        hudson Hudson added a comment -

        FAILURE: Integrated in Hadoop-Mapreduce-trunk #2502 (See https://builds.apache.org/job/Hadoop-Mapreduce-trunk/2502/)
        HDFS-9250. Add Precondition check to LocatedBlock#addCachedLoc. (wang: rev 8175c4f6b9fc17ff2e0fc568d798f9b6f2487696)

        • hadoop-hdfs-project/hadoop-hdfs/src/test/java/org/apache/hadoop/hdfs/protocol/TestLocatedBlock.java
        • hadoop-hdfs-project/hadoop-hdfs/CHANGES.txt
        • hadoop-hdfs-project/hadoop-hdfs-client/src/main/java/org/apache/hadoop/hdfs/protocol/LocatedBlock.java
        Show
        hudson Hudson added a comment - FAILURE: Integrated in Hadoop-Mapreduce-trunk #2502 (See https://builds.apache.org/job/Hadoop-Mapreduce-trunk/2502/ ) HDFS-9250 . Add Precondition check to LocatedBlock#addCachedLoc. (wang: rev 8175c4f6b9fc17ff2e0fc568d798f9b6f2487696) hadoop-hdfs-project/hadoop-hdfs/src/test/java/org/apache/hadoop/hdfs/protocol/TestLocatedBlock.java hadoop-hdfs-project/hadoop-hdfs/CHANGES.txt hadoop-hdfs-project/hadoop-hdfs-client/src/main/java/org/apache/hadoop/hdfs/protocol/LocatedBlock.java
        Hide
        hudson Hudson added a comment -

        FAILURE: Integrated in Hadoop-Mapreduce-trunk-Java8 #553 (See https://builds.apache.org/job/Hadoop-Mapreduce-trunk-Java8/553/)
        HDFS-9250. Add Precondition check to LocatedBlock#addCachedLoc. (wang: rev 8175c4f6b9fc17ff2e0fc568d798f9b6f2487696)

        • hadoop-hdfs-project/hadoop-hdfs/src/test/java/org/apache/hadoop/hdfs/protocol/TestLocatedBlock.java
        • hadoop-hdfs-project/hadoop-hdfs-client/src/main/java/org/apache/hadoop/hdfs/protocol/LocatedBlock.java
        • hadoop-hdfs-project/hadoop-hdfs/CHANGES.txt
        Show
        hudson Hudson added a comment - FAILURE: Integrated in Hadoop-Mapreduce-trunk-Java8 #553 (See https://builds.apache.org/job/Hadoop-Mapreduce-trunk-Java8/553/ ) HDFS-9250 . Add Precondition check to LocatedBlock#addCachedLoc. (wang: rev 8175c4f6b9fc17ff2e0fc568d798f9b6f2487696) hadoop-hdfs-project/hadoop-hdfs/src/test/java/org/apache/hadoop/hdfs/protocol/TestLocatedBlock.java hadoop-hdfs-project/hadoop-hdfs-client/src/main/java/org/apache/hadoop/hdfs/protocol/LocatedBlock.java hadoop-hdfs-project/hadoop-hdfs/CHANGES.txt
        Hide
        hudson Hudson added a comment -

        FAILURE: Integrated in Hadoop-Yarn-trunk #1290 (See https://builds.apache.org/job/Hadoop-Yarn-trunk/1290/)
        HDFS-9250. Add Precondition check to LocatedBlock#addCachedLoc. (wang: rev 8175c4f6b9fc17ff2e0fc568d798f9b6f2487696)

        • hadoop-hdfs-project/hadoop-hdfs/CHANGES.txt
        • hadoop-hdfs-project/hadoop-hdfs/src/test/java/org/apache/hadoop/hdfs/protocol/TestLocatedBlock.java
        • hadoop-hdfs-project/hadoop-hdfs-client/src/main/java/org/apache/hadoop/hdfs/protocol/LocatedBlock.java
        Show
        hudson Hudson added a comment - FAILURE: Integrated in Hadoop-Yarn-trunk #1290 (See https://builds.apache.org/job/Hadoop-Yarn-trunk/1290/ ) HDFS-9250 . Add Precondition check to LocatedBlock#addCachedLoc. (wang: rev 8175c4f6b9fc17ff2e0fc568d798f9b6f2487696) hadoop-hdfs-project/hadoop-hdfs/CHANGES.txt hadoop-hdfs-project/hadoop-hdfs/src/test/java/org/apache/hadoop/hdfs/protocol/TestLocatedBlock.java hadoop-hdfs-project/hadoop-hdfs-client/src/main/java/org/apache/hadoop/hdfs/protocol/LocatedBlock.java
        Hide
        hudson Hudson added a comment -

        FAILURE: Integrated in Hadoop-Yarn-trunk-Java8 #569 (See https://builds.apache.org/job/Hadoop-Yarn-trunk-Java8/569/)
        HDFS-9250. Add Precondition check to LocatedBlock#addCachedLoc. (wang: rev 8175c4f6b9fc17ff2e0fc568d798f9b6f2487696)

        • hadoop-hdfs-project/hadoop-hdfs/src/test/java/org/apache/hadoop/hdfs/protocol/TestLocatedBlock.java
        • hadoop-hdfs-project/hadoop-hdfs-client/src/main/java/org/apache/hadoop/hdfs/protocol/LocatedBlock.java
        • hadoop-hdfs-project/hadoop-hdfs/CHANGES.txt
        Show
        hudson Hudson added a comment - FAILURE: Integrated in Hadoop-Yarn-trunk-Java8 #569 (See https://builds.apache.org/job/Hadoop-Yarn-trunk-Java8/569/ ) HDFS-9250 . Add Precondition check to LocatedBlock#addCachedLoc. (wang: rev 8175c4f6b9fc17ff2e0fc568d798f9b6f2487696) hadoop-hdfs-project/hadoop-hdfs/src/test/java/org/apache/hadoop/hdfs/protocol/TestLocatedBlock.java hadoop-hdfs-project/hadoop-hdfs-client/src/main/java/org/apache/hadoop/hdfs/protocol/LocatedBlock.java hadoop-hdfs-project/hadoop-hdfs/CHANGES.txt
        Hide
        hudson Hudson added a comment -

        FAILURE: Integrated in Hadoop-trunk-Commit #8666 (See https://builds.apache.org/job/Hadoop-trunk-Commit/8666/)
        HDFS-9250. Add Precondition check to LocatedBlock#addCachedLoc. (wang: rev 8175c4f6b9fc17ff2e0fc568d798f9b6f2487696)

        • hadoop-hdfs-project/hadoop-hdfs/CHANGES.txt
        • hadoop-hdfs-project/hadoop-hdfs/src/test/java/org/apache/hadoop/hdfs/protocol/TestLocatedBlock.java
        • hadoop-hdfs-project/hadoop-hdfs-client/src/main/java/org/apache/hadoop/hdfs/protocol/LocatedBlock.java
        Show
        hudson Hudson added a comment - FAILURE: Integrated in Hadoop-trunk-Commit #8666 (See https://builds.apache.org/job/Hadoop-trunk-Commit/8666/ ) HDFS-9250 . Add Precondition check to LocatedBlock#addCachedLoc. (wang: rev 8175c4f6b9fc17ff2e0fc568d798f9b6f2487696) hadoop-hdfs-project/hadoop-hdfs/CHANGES.txt hadoop-hdfs-project/hadoop-hdfs/src/test/java/org/apache/hadoop/hdfs/protocol/TestLocatedBlock.java hadoop-hdfs-project/hadoop-hdfs-client/src/main/java/org/apache/hadoop/hdfs/protocol/LocatedBlock.java
        Hide
        xiaochen Xiao Chen added a comment -

        Thanks very much Andrew Wang for the review!

        Show
        xiaochen Xiao Chen added a comment - Thanks very much Andrew Wang for the review!
        Hide
        andrew.wang Andrew Wang added a comment -

        Committed to trunk and branch-2, thanks for the contribution Xiao!

        Show
        andrew.wang Andrew Wang added a comment - Committed to trunk and branch-2, thanks for the contribution Xiao!
        Hide
        andrew.wang Andrew Wang added a comment -

        LGTM, thanks Xiao. I'll update the summary and commit this.

        Show
        andrew.wang Andrew Wang added a comment - LGTM, thanks Xiao. I'll update the summary and commit this.
        Hide
        hadoopqa Hadoop QA added a comment -



        -1 overall



        Vote Subsystem Runtime Comment
        -1 pre-patch 26m 5s Pre-patch trunk has 1 extant Findbugs (version 3.0.0) warnings.
        +1 @author 0m 0s The patch does not contain any @author tags.
        +1 tests included 0m 0s The patch appears to include 1 new or modified test files.
        +1 javac 9m 25s There were no new javac warning messages.
        +1 javadoc 10m 52s There were no new javadoc warning messages.
        +1 release audit 0m 26s The applied patch does not increase the total number of release audit warnings.
        +1 checkstyle 3m 9s There were no new checkstyle issues.
        +1 whitespace 0m 0s The patch has no lines that end in whitespace.
        +1 install 1m 31s mvn install still works.
        +1 eclipse:eclipse 0m 36s The patch built with eclipse:eclipse.
        +1 findbugs 4m 38s The patch does not introduce any new Findbugs (version 3.0.0) warnings.
        +1 native 3m 18s Pre-build of native portion
        -1 hdfs tests 50m 24s Tests failed in hadoop-hdfs.
        +1 hdfs tests 0m 30s Tests passed in hadoop-hdfs-client.
            111m 0s  



        Reason Tests
        Failed unit tests hadoop.hdfs.server.blockmanagement.TestBlockManager
          hadoop.hdfs.TestRenameWhileOpen



        Subsystem Report/Notes
        Patch URL http://issues.apache.org/jira/secure/attachment/12767182/HDFS-9250.002.patch
        Optional Tests javadoc javac unit findbugs checkstyle
        git revision trunk / 58590fe
        Pre-patch Findbugs warnings https://builds.apache.org/job/PreCommit-HDFS-Build/13035/artifact/patchprocess/trunkFindbugsWarningshadoop-hdfs.html
        hadoop-hdfs test log https://builds.apache.org/job/PreCommit-HDFS-Build/13035/artifact/patchprocess/testrun_hadoop-hdfs.txt
        hadoop-hdfs-client test log https://builds.apache.org/job/PreCommit-HDFS-Build/13035/artifact/patchprocess/testrun_hadoop-hdfs-client.txt
        Test Results https://builds.apache.org/job/PreCommit-HDFS-Build/13035/testReport/
        Java 1.7.0_55
        uname Linux asf903.gq1.ygridcore.net 3.13.0-36-lowlatency #63-Ubuntu SMP PREEMPT Wed Sep 3 21:56:12 UTC 2014 x86_64 x86_64 x86_64 GNU/Linux
        Console output https://builds.apache.org/job/PreCommit-HDFS-Build/13035/console

        This message was automatically generated.

        Show
        hadoopqa Hadoop QA added a comment - -1 overall Vote Subsystem Runtime Comment -1 pre-patch 26m 5s Pre-patch trunk has 1 extant Findbugs (version 3.0.0) warnings. +1 @author 0m 0s The patch does not contain any @author tags. +1 tests included 0m 0s The patch appears to include 1 new or modified test files. +1 javac 9m 25s There were no new javac warning messages. +1 javadoc 10m 52s There were no new javadoc warning messages. +1 release audit 0m 26s The applied patch does not increase the total number of release audit warnings. +1 checkstyle 3m 9s There were no new checkstyle issues. +1 whitespace 0m 0s The patch has no lines that end in whitespace. +1 install 1m 31s mvn install still works. +1 eclipse:eclipse 0m 36s The patch built with eclipse:eclipse. +1 findbugs 4m 38s The patch does not introduce any new Findbugs (version 3.0.0) warnings. +1 native 3m 18s Pre-build of native portion -1 hdfs tests 50m 24s Tests failed in hadoop-hdfs. +1 hdfs tests 0m 30s Tests passed in hadoop-hdfs-client.     111m 0s   Reason Tests Failed unit tests hadoop.hdfs.server.blockmanagement.TestBlockManager   hadoop.hdfs.TestRenameWhileOpen Subsystem Report/Notes Patch URL http://issues.apache.org/jira/secure/attachment/12767182/HDFS-9250.002.patch Optional Tests javadoc javac unit findbugs checkstyle git revision trunk / 58590fe Pre-patch Findbugs warnings https://builds.apache.org/job/PreCommit-HDFS-Build/13035/artifact/patchprocess/trunkFindbugsWarningshadoop-hdfs.html hadoop-hdfs test log https://builds.apache.org/job/PreCommit-HDFS-Build/13035/artifact/patchprocess/testrun_hadoop-hdfs.txt hadoop-hdfs-client test log https://builds.apache.org/job/PreCommit-HDFS-Build/13035/artifact/patchprocess/testrun_hadoop-hdfs-client.txt Test Results https://builds.apache.org/job/PreCommit-HDFS-Build/13035/testReport/ Java 1.7.0_55 uname Linux asf903.gq1.ygridcore.net 3.13.0-36-lowlatency #63-Ubuntu SMP PREEMPT Wed Sep 3 21:56:12 UTC 2014 x86_64 x86_64 x86_64 GNU/Linux Console output https://builds.apache.org/job/PreCommit-HDFS-Build/13035/console This message was automatically generated.
        Hide
        xiaochen Xiao Chen added a comment -

        Hey Andrew Wang,

        Thanks again for bringing up HDFS-8646, which looks complete to me. The version I encountered the ArrayStoreException is before your fix. Thus I think it's possible that the location is added without disk replica.

        Patch 002 is attached. Your suggestion of adding a precondition check sounds great, since otherwise we know it's gonna throw the ArrayStoreException for sure in that condition. I left the test case untouched just to run into the precondition block. Please review. Thanks!

        Show
        xiaochen Xiao Chen added a comment - Hey Andrew Wang , Thanks again for bringing up HDFS-8646 , which looks complete to me. The version I encountered the ArrayStoreException is before your fix. Thus I think it's possible that the location is added without disk replica. Patch 002 is attached. Your suggestion of adding a precondition check sounds great, since otherwise we know it's gonna throw the ArrayStoreException for sure in that condition. I left the test case untouched just to run into the precondition block. Please review. Thanks!
        Hide
        xiaochen Xiao Chen added a comment -

        Hi Andrew, thanks for the comments and additional information. I will further investigate it.

        Show
        xiaochen Xiao Chen added a comment - Hi Andrew, thanks for the comments and additional information. I will further investigate it.
        Hide
        andrew.wang Andrew Wang added a comment -

        It may also be good to add a Precondition check somewhere in addCachedLoc so we can more easily debug this in the future, and as a form of documentation about this assumption.

        Show
        andrew.wang Andrew Wang added a comment - It may also be good to add a Precondition check somewhere in addCachedLoc so we can more easily debug this in the future, and as a form of documentation about this assumption.
        Hide
        andrew.wang Andrew Wang added a comment -

        Hi Xiao, thanks for working on this,

        So one question about this, we're not supposed to add cached locations that do not also have a backing disk replica. So in your test case, dn would be present in locs already. If I edit your test case to do this, it passes without the change.

        This is probably related to HDFS-8646 which I worked on before, we missed some places where cache state could get out of sync with replica state. I thought I added enough pruning to safeguard against this, but maybe I missed a place. Could you investigate?

        Show
        andrew.wang Andrew Wang added a comment - Hi Xiao, thanks for working on this, So one question about this, we're not supposed to add cached locations that do not also have a backing disk replica. So in your test case, dn would be present in locs already. If I edit your test case to do this, it passes without the change. This is probably related to HDFS-8646 which I worked on before, we missed some places where cache state could get out of sync with replica state. I thought I added enough pruning to safeguard against this, but maybe I missed a place. Could you investigate?
        Hide
        xiaochen Xiao Chen added a comment -

        The Findbugs warning and test failure are not relevant.
        Please review. Thanks.

        Show
        xiaochen Xiao Chen added a comment - The Findbugs warning and test failure are not relevant. Please review. Thanks.
        Hide
        hadoopqa Hadoop QA added a comment -



        -1 overall



        Vote Subsystem Runtime Comment
        -1 pre-patch 20m 24s Pre-patch trunk has 1 extant Findbugs (version 3.0.0) warnings.
        +1 @author 0m 0s The patch does not contain any @author tags.
        +1 tests included 0m 0s The patch appears to include 1 new or modified test files.
        +1 javac 8m 3s There were no new javac warning messages.
        +1 javadoc 10m 27s There were no new javadoc warning messages.
        +1 release audit 0m 25s The applied patch does not increase the total number of release audit warnings.
        +1 checkstyle 2m 57s There were no new checkstyle issues.
        +1 whitespace 0m 0s The patch has no lines that end in whitespace.
        +1 install 1m 31s mvn install still works.
        +1 eclipse:eclipse 0m 36s The patch built with eclipse:eclipse.
        +1 findbugs 4m 36s The patch does not introduce any new Findbugs (version 3.0.0) warnings.
        +1 native 3m 15s Pre-build of native portion
        -1 hdfs tests 50m 26s Tests failed in hadoop-hdfs.
        +1 hdfs tests 0m 32s Tests passed in hadoop-hdfs-client.
            103m 17s  



        Reason Tests
        Failed unit tests hadoop.hdfs.TestBlockStoragePolicy



        Subsystem Report/Notes
        Patch URL http://issues.apache.org/jira/secure/attachment/12766835/HDFS-9250.001.patch
        Optional Tests javadoc javac unit findbugs checkstyle
        git revision trunk / 8d2d3eb
        Pre-patch Findbugs warnings https://builds.apache.org/job/PreCommit-HDFS-Build/13006/artifact/patchprocess/trunkFindbugsWarningshadoop-hdfs.html
        hadoop-hdfs test log https://builds.apache.org/job/PreCommit-HDFS-Build/13006/artifact/patchprocess/testrun_hadoop-hdfs.txt
        hadoop-hdfs-client test log https://builds.apache.org/job/PreCommit-HDFS-Build/13006/artifact/patchprocess/testrun_hadoop-hdfs-client.txt
        Test Results https://builds.apache.org/job/PreCommit-HDFS-Build/13006/testReport/
        Java 1.7.0_55
        uname Linux asf903.gq1.ygridcore.net 3.13.0-36-lowlatency #63-Ubuntu SMP PREEMPT Wed Sep 3 21:56:12 UTC 2014 x86_64 x86_64 x86_64 GNU/Linux
        Console output https://builds.apache.org/job/PreCommit-HDFS-Build/13006/console

        This message was automatically generated.

        Show
        hadoopqa Hadoop QA added a comment - -1 overall Vote Subsystem Runtime Comment -1 pre-patch 20m 24s Pre-patch trunk has 1 extant Findbugs (version 3.0.0) warnings. +1 @author 0m 0s The patch does not contain any @author tags. +1 tests included 0m 0s The patch appears to include 1 new or modified test files. +1 javac 8m 3s There were no new javac warning messages. +1 javadoc 10m 27s There were no new javadoc warning messages. +1 release audit 0m 25s The applied patch does not increase the total number of release audit warnings. +1 checkstyle 2m 57s There were no new checkstyle issues. +1 whitespace 0m 0s The patch has no lines that end in whitespace. +1 install 1m 31s mvn install still works. +1 eclipse:eclipse 0m 36s The patch built with eclipse:eclipse. +1 findbugs 4m 36s The patch does not introduce any new Findbugs (version 3.0.0) warnings. +1 native 3m 15s Pre-build of native portion -1 hdfs tests 50m 26s Tests failed in hadoop-hdfs. +1 hdfs tests 0m 32s Tests passed in hadoop-hdfs-client.     103m 17s   Reason Tests Failed unit tests hadoop.hdfs.TestBlockStoragePolicy Subsystem Report/Notes Patch URL http://issues.apache.org/jira/secure/attachment/12766835/HDFS-9250.001.patch Optional Tests javadoc javac unit findbugs checkstyle git revision trunk / 8d2d3eb Pre-patch Findbugs warnings https://builds.apache.org/job/PreCommit-HDFS-Build/13006/artifact/patchprocess/trunkFindbugsWarningshadoop-hdfs.html hadoop-hdfs test log https://builds.apache.org/job/PreCommit-HDFS-Build/13006/artifact/patchprocess/testrun_hadoop-hdfs.txt hadoop-hdfs-client test log https://builds.apache.org/job/PreCommit-HDFS-Build/13006/artifact/patchprocess/testrun_hadoop-hdfs-client.txt Test Results https://builds.apache.org/job/PreCommit-HDFS-Build/13006/testReport/ Java 1.7.0_55 uname Linux asf903.gq1.ygridcore.net 3.13.0-36-lowlatency #63-Ubuntu SMP PREEMPT Wed Sep 3 21:56:12 UTC 2014 x86_64 x86_64 x86_64 GNU/Linux Console output https://builds.apache.org/job/PreCommit-HDFS-Build/13006/console This message was automatically generated.
        Hide
        xiaochen Xiao Chen added a comment -

        Patch 001 fixes the described exception.
        Added test case in a new test class since there's no specific tests for LocatedBlock

        Show
        xiaochen Xiao Chen added a comment - Patch 001 fixes the described exception. Added test case in a new test class since there's no specific tests for LocatedBlock

          People

          • Assignee:
            xiaochen Xiao Chen
            Reporter:
            xiaochen Xiao Chen
          • Votes:
            0 Vote for this issue
            Watchers:
            6 Start watching this issue

            Dates

            • Created:
              Updated:
              Resolved:

              Development