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  1. Hadoop HDFS
  2. HDFS-9208

Disabling atime may fail clients like distCp

    Details

    • Type: Bug
    • Status: Resolved
    • Priority: Major
    • Resolution: Fixed
    • Affects Version/s: None
    • Fix Version/s: 2.8.0, 3.0.0-alpha1
    • Component/s: None
    • Labels:
      None
    • Target Version/s:
    • Hadoop Flags:
      Reviewed

      Description

      When atime is disabled, setTimes() throws an exception if the passed-in atime is not -1. But since atime is not -1, distCp fails when it tries to set the mtime and atime.

      There are several options:

      1) make distCp check for 0 atime and call setTimes() with -1. I am not very enthusiastic about it.
      2) make NN also accept 0 atime in addition to -1, when the atime support is disabled.
      3) support setting mtime & atime regardless of the atime support. The main reason why atime is disabled is to avoid edit logging/syncing during getBlockLocations() read calls. Explicit setting can be allowed.

      1. HDFS-9208.patch
        3 kB
        Kihwal Lee
      2. HDFS-9208.v2.patch
        3 kB
        Kihwal Lee

        Issue Links

          Activity

          Hide
          cnauroth Chris Nauroth added a comment -

          Hello Kihwal Lee.

          I had filed HADOOP-12390 related to this problem specifically for hdfs dfs -put -p. I proposed fixing it at the application layer by supporting additional flags for preserving specific attributes.

          Instead of fixing it in applications, I think I prefer your option #3 here to allow explicit changes to atime at the NameNode layer. I don't see any harm in allowing that. A single fix at the NameNode layer would help all applications that might suffer from this problem.

          Show
          cnauroth Chris Nauroth added a comment - Hello Kihwal Lee . I had filed HADOOP-12390 related to this problem specifically for hdfs dfs -put -p . I proposed fixing it at the application layer by supporting additional flags for preserving specific attributes. Instead of fixing it in applications, I think I prefer your option #3 here to allow explicit changes to atime at the NameNode layer. I don't see any harm in allowing that. A single fix at the NameNode layer would help all applications that might suffer from this problem.
          Hide
          kihwal Kihwal Lee added a comment -

          I also like option #3.

          Show
          kihwal Kihwal Lee added a comment - I also like option #3.
          Hide
          kihwal Kihwal Lee added a comment -

          Really #3 is the only option. I was wrong about atime being 0. When INode is created, the atime and mtime are set to identical value. option 1) and 2) are not possible.

          Show
          kihwal Kihwal Lee added a comment - Really #3 is the only option. I was wrong about atime being 0. When INode is created, the atime and mtime are set to identical value. option 1) and 2) are not possible.
          Hide
          kihwal Kihwal Lee added a comment -

          Mingliang Liu Are you actively working on this?

          Show
          kihwal Kihwal Lee added a comment - Mingliang Liu Are you actively working on this?
          Hide
          liuml07 Mingliang Liu added a comment -

          Hi Kihwal Lee, this is on my list this week but I'm not working on this actively. Sorry for the delay. I need more context for the options.

          I assign it back to you in case you're blocked.

          Show
          liuml07 Mingliang Liu added a comment - Hi Kihwal Lee , this is on my list this week but I'm not working on this actively. Sorry for the delay. I need more context for the options. I assign it back to you in case you're blocked.
          Hide
          kihwal Kihwal Lee added a comment -

          The setTimes() call through getBlockLocations() does not force update, while explicit call does. So it is a simple matter of removing the check. The behavior of getBlockLocations() is not changed.

          Show
          kihwal Kihwal Lee added a comment - The setTimes() call through getBlockLocations() does not force update, while explicit call does. So it is a simple matter of removing the check. The behavior of getBlockLocations() is not changed.
          Hide
          hadoopqa Hadoop QA added a comment -



          -1 overall



          Vote Subsystem Runtime Comment
          -1 pre-patch 20m 45s 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 59s There were no new javac warning messages.
          +1 javadoc 11m 40s There were no new javadoc warning messages.
          +1 release audit 0m 23s The applied patch does not increase the total number of release audit warnings.
          -1 checkstyle 1m 39s The applied patch generated 1 new checkstyle issues (total was 14, now 15).
          +1 whitespace 0m 0s The patch has no lines that end in whitespace.
          +1 install 1m 42s mvn install still works.
          +1 eclipse:eclipse 0m 38s The patch built with eclipse:eclipse.
          +1 findbugs 2m 53s The patch does not introduce any new Findbugs (version 3.0.0) warnings.
          +1 native 3m 41s Pre-build of native portion
          -1 hdfs tests 69m 14s Tests failed in hadoop-hdfs.
              121m 37s  



          Reason Tests
          Failed unit tests hadoop.hdfs.TestReplaceDatanodeOnFailure
            hadoop.hdfs.TestRecoverStripedFile
            hadoop.hdfs.TestCrcCorruption
            hadoop.hdfs.server.blockmanagement.TestUnderReplicatedBlocks



          Subsystem Report/Notes
          Patch URL http://issues.apache.org/jira/secure/attachment/12767090/HDFS-9208.patch
          Optional Tests javadoc javac unit findbugs checkstyle
          git revision trunk / 52ac73f
          Pre-patch Findbugs warnings https://builds.apache.org/job/PreCommit-HDFS-Build/13032/artifact/patchprocess/trunkFindbugsWarningshadoop-hdfs.html
          checkstyle https://builds.apache.org/job/PreCommit-HDFS-Build/13032/artifact/patchprocess/diffcheckstylehadoop-hdfs.txt
          hadoop-hdfs test log https://builds.apache.org/job/PreCommit-HDFS-Build/13032/artifact/patchprocess/testrun_hadoop-hdfs.txt
          Test Results https://builds.apache.org/job/PreCommit-HDFS-Build/13032/testReport/
          Java 1.7.0_55
          uname Linux asf909.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/13032/console

          This message was automatically generated.

          Show
          hadoopqa Hadoop QA added a comment - -1 overall Vote Subsystem Runtime Comment -1 pre-patch 20m 45s 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 59s There were no new javac warning messages. +1 javadoc 11m 40s There were no new javadoc warning messages. +1 release audit 0m 23s The applied patch does not increase the total number of release audit warnings. -1 checkstyle 1m 39s The applied patch generated 1 new checkstyle issues (total was 14, now 15). +1 whitespace 0m 0s The patch has no lines that end in whitespace. +1 install 1m 42s mvn install still works. +1 eclipse:eclipse 0m 38s The patch built with eclipse:eclipse. +1 findbugs 2m 53s The patch does not introduce any new Findbugs (version 3.0.0) warnings. +1 native 3m 41s Pre-build of native portion -1 hdfs tests 69m 14s Tests failed in hadoop-hdfs.     121m 37s   Reason Tests Failed unit tests hadoop.hdfs.TestReplaceDatanodeOnFailure   hadoop.hdfs.TestRecoverStripedFile   hadoop.hdfs.TestCrcCorruption   hadoop.hdfs.server.blockmanagement.TestUnderReplicatedBlocks Subsystem Report/Notes Patch URL http://issues.apache.org/jira/secure/attachment/12767090/HDFS-9208.patch Optional Tests javadoc javac unit findbugs checkstyle git revision trunk / 52ac73f Pre-patch Findbugs warnings https://builds.apache.org/job/PreCommit-HDFS-Build/13032/artifact/patchprocess/trunkFindbugsWarningshadoop-hdfs.html checkstyle https://builds.apache.org/job/PreCommit-HDFS-Build/13032/artifact/patchprocess/diffcheckstylehadoop-hdfs.txt hadoop-hdfs test log https://builds.apache.org/job/PreCommit-HDFS-Build/13032/artifact/patchprocess/testrun_hadoop-hdfs.txt Test Results https://builds.apache.org/job/PreCommit-HDFS-Build/13032/testReport/ Java 1.7.0_55 uname Linux asf909.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/13032/console This message was automatically generated.
          Hide
          cnauroth Chris Nauroth added a comment -

          Kihwal Lee, thank you for the patch. I am +1 for making this change.

          The test failures look unrelated, and I can't repro them locally. I also manually tested hdfs dfs -copyFromLocal -p and hadoop distcp -pt with a NameNode that has atime disabled. You can remove the now-unused import of DFS_NAMENODE_ACCESSTIME_PRECISION_KEY to fix the Checkstyle warning. After that, I think the patch will be ready.

          Show
          cnauroth Chris Nauroth added a comment - Kihwal Lee , thank you for the patch. I am +1 for making this change. The test failures look unrelated, and I can't repro them locally. I also manually tested hdfs dfs -copyFromLocal -p and hadoop distcp -pt with a NameNode that has atime disabled. You can remove the now-unused import of DFS_NAMENODE_ACCESSTIME_PRECISION_KEY to fix the Checkstyle warning. After that, I think the patch will be ready.
          Hide
          kihwal Kihwal Lee added a comment -

          Thanks for the review, Chris. Attaching a new patch that removes the unused import.

          Show
          kihwal Kihwal Lee added a comment - Thanks for the review, Chris. Attaching a new patch that removes the unused import.
          Hide
          hadoopqa Hadoop QA added a comment -



          -1 overall



          Vote Subsystem Runtime Comment
          -1 pre-patch 18m 19s 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 31s There were no new javadoc warning messages.
          +1 release audit 0m 24s The applied patch does not increase the total number of release audit warnings.
          +1 checkstyle 1m 25s There were no new checkstyle issues.
          +1 whitespace 0m 0s The patch has no lines that end in whitespace.
          +1 install 1m 30s mvn install still works.
          +1 eclipse:eclipse 0m 33s The patch built with eclipse:eclipse.
          +1 findbugs 2m 32s The patch does not introduce any new Findbugs (version 3.0.0) warnings.
          +1 native 3m 14s Pre-build of native portion
          -1 hdfs tests 49m 12s Tests failed in hadoop-hdfs.
              95m 46s  



          Reason Tests
          Failed unit tests hadoop.hdfs.TestDFSClientRetries
            hadoop.hdfs.web.TestWebHdfsFileSystemContract
            hadoop.hdfs.TestDecommission



          Subsystem Report/Notes
          Patch URL http://issues.apache.org/jira/secure/attachment/12767469/HDFS-9208.v2.patch
          Optional Tests javadoc javac unit findbugs checkstyle
          git revision trunk / 6144e01
          Pre-patch Findbugs warnings https://builds.apache.org/job/PreCommit-HDFS-Build/13055/artifact/patchprocess/trunkFindbugsWarningshadoop-hdfs.html
          hadoop-hdfs test log https://builds.apache.org/job/PreCommit-HDFS-Build/13055/artifact/patchprocess/testrun_hadoop-hdfs.txt
          Test Results https://builds.apache.org/job/PreCommit-HDFS-Build/13055/testReport/
          Java 1.7.0_55
          uname Linux asf902.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/13055/console

          This message was automatically generated.

          Show
          hadoopqa Hadoop QA added a comment - -1 overall Vote Subsystem Runtime Comment -1 pre-patch 18m 19s 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 31s There were no new javadoc warning messages. +1 release audit 0m 24s The applied patch does not increase the total number of release audit warnings. +1 checkstyle 1m 25s There were no new checkstyle issues. +1 whitespace 0m 0s The patch has no lines that end in whitespace. +1 install 1m 30s mvn install still works. +1 eclipse:eclipse 0m 33s The patch built with eclipse:eclipse. +1 findbugs 2m 32s The patch does not introduce any new Findbugs (version 3.0.0) warnings. +1 native 3m 14s Pre-build of native portion -1 hdfs tests 49m 12s Tests failed in hadoop-hdfs.     95m 46s   Reason Tests Failed unit tests hadoop.hdfs.TestDFSClientRetries   hadoop.hdfs.web.TestWebHdfsFileSystemContract   hadoop.hdfs.TestDecommission Subsystem Report/Notes Patch URL http://issues.apache.org/jira/secure/attachment/12767469/HDFS-9208.v2.patch Optional Tests javadoc javac unit findbugs checkstyle git revision trunk / 6144e01 Pre-patch Findbugs warnings https://builds.apache.org/job/PreCommit-HDFS-Build/13055/artifact/patchprocess/trunkFindbugsWarningshadoop-hdfs.html hadoop-hdfs test log https://builds.apache.org/job/PreCommit-HDFS-Build/13055/artifact/patchprocess/testrun_hadoop-hdfs.txt Test Results https://builds.apache.org/job/PreCommit-HDFS-Build/13055/testReport/ Java 1.7.0_55 uname Linux asf902.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/13055/console This message was automatically generated.
          Hide
          cnauroth Chris Nauroth added a comment -

          +1 for patch v2. Thank you, Kihwal.

          Show
          cnauroth Chris Nauroth added a comment - +1 for patch v2. Thank you, Kihwal.
          Hide
          hitliuyi Yi Liu added a comment -

          Committed to trunk and branch-2. Thanks Kihwal Lee for the work and Chris Nauroth for the review.

          Show
          hitliuyi Yi Liu added a comment - Committed to trunk and branch-2. Thanks Kihwal Lee for the work and Chris Nauroth for the review.
          Hide
          hudson Hudson added a comment -

          FAILURE: Integrated in Hadoop-Yarn-trunk-Java8 #571 (See https://builds.apache.org/job/Hadoop-Yarn-trunk-Java8/571/)
          HDFS-9208. Disabling atime may fail clients like distCp. (Kihwal Lee via (yliu: rev 9cb5d353533e829e624b33fb26dd37c177e1e046)

          • hadoop-hdfs-project/hadoop-hdfs/src/main/java/org/apache/hadoop/hdfs/server/namenode/FSDirAttrOp.java
          • hadoop-hdfs-project/hadoop-hdfs/CHANGES.txt
          • hadoop-hdfs-project/hadoop-hdfs/src/test/java/org/apache/hadoop/hdfs/TestSetTimes.java
          Show
          hudson Hudson added a comment - FAILURE: Integrated in Hadoop-Yarn-trunk-Java8 #571 (See https://builds.apache.org/job/Hadoop-Yarn-trunk-Java8/571/ ) HDFS-9208 . Disabling atime may fail clients like distCp. (Kihwal Lee via (yliu: rev 9cb5d353533e829e624b33fb26dd37c177e1e046) hadoop-hdfs-project/hadoop-hdfs/src/main/java/org/apache/hadoop/hdfs/server/namenode/FSDirAttrOp.java hadoop-hdfs-project/hadoop-hdfs/CHANGES.txt hadoop-hdfs-project/hadoop-hdfs/src/test/java/org/apache/hadoop/hdfs/TestSetTimes.java
          Hide
          hudson Hudson added a comment -

          FAILURE: Integrated in Hadoop-trunk-Commit #8669 (See https://builds.apache.org/job/Hadoop-trunk-Commit/8669/)
          HDFS-9208. Disabling atime may fail clients like distCp. (Kihwal Lee via (yliu: rev 9cb5d353533e829e624b33fb26dd37c177e1e046)

          • hadoop-hdfs-project/hadoop-hdfs/src/test/java/org/apache/hadoop/hdfs/TestSetTimes.java
          • hadoop-hdfs-project/hadoop-hdfs/CHANGES.txt
          • hadoop-hdfs-project/hadoop-hdfs/src/main/java/org/apache/hadoop/hdfs/server/namenode/FSDirAttrOp.java
          Show
          hudson Hudson added a comment - FAILURE: Integrated in Hadoop-trunk-Commit #8669 (See https://builds.apache.org/job/Hadoop-trunk-Commit/8669/ ) HDFS-9208 . Disabling atime may fail clients like distCp. (Kihwal Lee via (yliu: rev 9cb5d353533e829e624b33fb26dd37c177e1e046) hadoop-hdfs-project/hadoop-hdfs/src/test/java/org/apache/hadoop/hdfs/TestSetTimes.java hadoop-hdfs-project/hadoop-hdfs/CHANGES.txt hadoop-hdfs-project/hadoop-hdfs/src/main/java/org/apache/hadoop/hdfs/server/namenode/FSDirAttrOp.java
          Hide
          hudson Hudson added a comment -

          FAILURE: Integrated in Hadoop-Yarn-trunk #1292 (See https://builds.apache.org/job/Hadoop-Yarn-trunk/1292/)
          HDFS-9208. Disabling atime may fail clients like distCp. (Kihwal Lee via (yliu: rev 9cb5d353533e829e624b33fb26dd37c177e1e046)

          • hadoop-hdfs-project/hadoop-hdfs/src/test/java/org/apache/hadoop/hdfs/TestSetTimes.java
          • hadoop-hdfs-project/hadoop-hdfs/src/main/java/org/apache/hadoop/hdfs/server/namenode/FSDirAttrOp.java
          • hadoop-hdfs-project/hadoop-hdfs/CHANGES.txt
          Show
          hudson Hudson added a comment - FAILURE: Integrated in Hadoop-Yarn-trunk #1292 (See https://builds.apache.org/job/Hadoop-Yarn-trunk/1292/ ) HDFS-9208 . Disabling atime may fail clients like distCp. (Kihwal Lee via (yliu: rev 9cb5d353533e829e624b33fb26dd37c177e1e046) hadoop-hdfs-project/hadoop-hdfs/src/test/java/org/apache/hadoop/hdfs/TestSetTimes.java hadoop-hdfs-project/hadoop-hdfs/src/main/java/org/apache/hadoop/hdfs/server/namenode/FSDirAttrOp.java hadoop-hdfs-project/hadoop-hdfs/CHANGES.txt
          Hide
          hudson Hudson added a comment -

          FAILURE: Integrated in Hadoop-Mapreduce-trunk #2504 (See https://builds.apache.org/job/Hadoop-Mapreduce-trunk/2504/)
          HDFS-9208. Disabling atime may fail clients like distCp. (Kihwal Lee via (yliu: rev 9cb5d353533e829e624b33fb26dd37c177e1e046)

          • hadoop-hdfs-project/hadoop-hdfs/CHANGES.txt
          • hadoop-hdfs-project/hadoop-hdfs/src/test/java/org/apache/hadoop/hdfs/TestSetTimes.java
          • hadoop-hdfs-project/hadoop-hdfs/src/main/java/org/apache/hadoop/hdfs/server/namenode/FSDirAttrOp.java
          Show
          hudson Hudson added a comment - FAILURE: Integrated in Hadoop-Mapreduce-trunk #2504 (See https://builds.apache.org/job/Hadoop-Mapreduce-trunk/2504/ ) HDFS-9208 . Disabling atime may fail clients like distCp. (Kihwal Lee via (yliu: rev 9cb5d353533e829e624b33fb26dd37c177e1e046) hadoop-hdfs-project/hadoop-hdfs/CHANGES.txt hadoop-hdfs-project/hadoop-hdfs/src/test/java/org/apache/hadoop/hdfs/TestSetTimes.java hadoop-hdfs-project/hadoop-hdfs/src/main/java/org/apache/hadoop/hdfs/server/namenode/FSDirAttrOp.java
          Hide
          hudson Hudson added a comment -

          FAILURE: Integrated in Hadoop-Mapreduce-trunk-Java8 #556 (See https://builds.apache.org/job/Hadoop-Mapreduce-trunk-Java8/556/)
          HDFS-9208. Disabling atime may fail clients like distCp. (Kihwal Lee via (yliu: rev 9cb5d353533e829e624b33fb26dd37c177e1e046)

          • hadoop-hdfs-project/hadoop-hdfs/src/test/java/org/apache/hadoop/hdfs/TestSetTimes.java
          • hadoop-hdfs-project/hadoop-hdfs/src/main/java/org/apache/hadoop/hdfs/server/namenode/FSDirAttrOp.java
          • hadoop-hdfs-project/hadoop-hdfs/CHANGES.txt
          Show
          hudson Hudson added a comment - FAILURE: Integrated in Hadoop-Mapreduce-trunk-Java8 #556 (See https://builds.apache.org/job/Hadoop-Mapreduce-trunk-Java8/556/ ) HDFS-9208 . Disabling atime may fail clients like distCp. (Kihwal Lee via (yliu: rev 9cb5d353533e829e624b33fb26dd37c177e1e046) hadoop-hdfs-project/hadoop-hdfs/src/test/java/org/apache/hadoop/hdfs/TestSetTimes.java hadoop-hdfs-project/hadoop-hdfs/src/main/java/org/apache/hadoop/hdfs/server/namenode/FSDirAttrOp.java hadoop-hdfs-project/hadoop-hdfs/CHANGES.txt
          Hide
          hudson Hudson added a comment -

          FAILURE: Integrated in Hadoop-Hdfs-trunk #2454 (See https://builds.apache.org/job/Hadoop-Hdfs-trunk/2454/)
          HDFS-9208. Disabling atime may fail clients like distCp. (Kihwal Lee via (yliu: rev 9cb5d353533e829e624b33fb26dd37c177e1e046)

          • hadoop-hdfs-project/hadoop-hdfs/src/main/java/org/apache/hadoop/hdfs/server/namenode/FSDirAttrOp.java
          • hadoop-hdfs-project/hadoop-hdfs/CHANGES.txt
          • hadoop-hdfs-project/hadoop-hdfs/src/test/java/org/apache/hadoop/hdfs/TestSetTimes.java
          Show
          hudson Hudson added a comment - FAILURE: Integrated in Hadoop-Hdfs-trunk #2454 (See https://builds.apache.org/job/Hadoop-Hdfs-trunk/2454/ ) HDFS-9208 . Disabling atime may fail clients like distCp. (Kihwal Lee via (yliu: rev 9cb5d353533e829e624b33fb26dd37c177e1e046) hadoop-hdfs-project/hadoop-hdfs/src/main/java/org/apache/hadoop/hdfs/server/namenode/FSDirAttrOp.java hadoop-hdfs-project/hadoop-hdfs/CHANGES.txt hadoop-hdfs-project/hadoop-hdfs/src/test/java/org/apache/hadoop/hdfs/TestSetTimes.java
          Hide
          hudson Hudson added a comment -

          FAILURE: Integrated in Hadoop-Hdfs-trunk-Java8 #517 (See https://builds.apache.org/job/Hadoop-Hdfs-trunk-Java8/517/)
          HDFS-9208. Disabling atime may fail clients like distCp. (Kihwal Lee via (yliu: rev 9cb5d353533e829e624b33fb26dd37c177e1e046)

          • hadoop-hdfs-project/hadoop-hdfs/src/main/java/org/apache/hadoop/hdfs/server/namenode/FSDirAttrOp.java
          • hadoop-hdfs-project/hadoop-hdfs/CHANGES.txt
          • hadoop-hdfs-project/hadoop-hdfs/src/test/java/org/apache/hadoop/hdfs/TestSetTimes.java
          Show
          hudson Hudson added a comment - FAILURE: Integrated in Hadoop-Hdfs-trunk-Java8 #517 (See https://builds.apache.org/job/Hadoop-Hdfs-trunk-Java8/517/ ) HDFS-9208 . Disabling atime may fail clients like distCp. (Kihwal Lee via (yliu: rev 9cb5d353533e829e624b33fb26dd37c177e1e046) hadoop-hdfs-project/hadoop-hdfs/src/main/java/org/apache/hadoop/hdfs/server/namenode/FSDirAttrOp.java hadoop-hdfs-project/hadoop-hdfs/CHANGES.txt hadoop-hdfs-project/hadoop-hdfs/src/test/java/org/apache/hadoop/hdfs/TestSetTimes.java

            People

            • Assignee:
              kihwal Kihwal Lee
              Reporter:
              kihwal Kihwal Lee
            • Votes:
              0 Vote for this issue
              Watchers:
              9 Start watching this issue

              Dates

              • Created:
                Updated:
                Resolved:

                Development