hadoop-hdfs-issues mailing list archives

Site index · List index
Message view « Date » · « Thread »
Top « Date » · « Thread »
From "Hadoop QA (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (HDFS-7174) Support for more efficient large directories
Date Wed, 01 Oct 2014 01:36:34 GMT

    [ https://issues.apache.org/jira/browse/HDFS-7174?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14154196#comment-14154196
] 

Hadoop QA commented on HDFS-7174:
---------------------------------

{color:red}-1 overall{color}.  Here are the results of testing the latest attachment 
  http://issues.apache.org/jira/secure/attachment/12672169/HDFS-7174.patch
  against trunk revision 14d60da.

    {color:green}+1 @author{color}.  The patch does not contain any @author tags.

    {color:green}+1 tests included{color}.  The patch appears to include 1 new or modified
test files.

      {color:red}-1 javac{color}.  The applied patch generated 1275 javac compiler warnings
(more than the trunk's current 1264 warnings).

    {color:green}+1 javadoc{color}.  There were no new javadoc warning messages.

    {color:green}+1 eclipse:eclipse{color}.  The patch built with eclipse:eclipse.

    {color:red}-1 findbugs{color}.  The patch appears to introduce 1 new Findbugs (version
2.0.3) warnings.

    {color:green}+1 release audit{color}.  The applied patch does not increase the total number
of release audit warnings.

    {color:red}-1 core tests{color}.  The patch failed these unit tests in hadoop-hdfs-project/hadoop-hdfs:

                  org.apache.hadoop.hdfs.server.namenode.TestINodeFile
                  org.apache.hadoop.hdfs.server.namenode.ha.TestHASafeMode
                  org.apache.hadoop.hdfs.server.namenode.TestSaveNamespace
                  org.apache.hadoop.hdfs.server.namenode.TestStorageRestore
                  org.apache.hadoop.hdfs.TestEncryptionZones
                  org.apache.hadoop.hdfs.server.namenode.snapshot.TestCheckpointsWithSnapshots
                  org.apache.hadoop.hdfs.server.namenode.TestFSPermissionChecker
                  org.apache.hadoop.hdfs.TestDFSFinalize
                  org.apache.hadoop.hdfs.server.namenode.TestFSImageWithAcl
                  org.apache.hadoop.hdfs.server.namenode.TestCommitBlockSynchronization
                  org.apache.hadoop.hdfs.TestFileAppendRestart
                  org.apache.hadoop.hdfs.server.namenode.TestEditLog
                  org.apache.hadoop.hdfs.server.namenode.snapshot.TestAclWithSnapshot
                  org.apache.hadoop.hdfs.server.namenode.TestFSImageWithXAttr
                  org.apache.hadoop.hdfs.TestRollingUpgrade
                  org.apache.hadoop.hdfs.server.namenode.TestNameNodeRecovery
                  org.apache.hadoop.hdfs.server.namenode.snapshot.TestSnapshot
                  org.apache.hadoop.hdfs.server.namenode.snapshot.TestRenameWithSnapshots
                  org.apache.hadoop.hdfs.server.namenode.snapshot.TestXAttrWithSnapshot
                  org.apache.hadoop.hdfs.server.namenode.ha.TestStandbyCheckpoints
                  org.apache.hadoop.hdfs.server.namenode.TestAclConfigFlag
                  org.apache.hadoop.hdfs.server.namenode.TestBackupNode
                  org.apache.hadoop.hdfs.server.namenode.TestCheckpoint
                  org.apache.hadoop.hdfs.server.namenode.ha.TestPipelinesFailover
                  org.apache.hadoop.hdfs.server.namenode.snapshot.TestOpenFilesWithSnapshot
                  org.apache.hadoop.hdfs.server.namenode.TestXAttrConfigFlag
                  org.apache.hadoop.hdfs.server.namenode.TestStartup
                  org.apache.hadoop.hdfs.server.namenode.ha.TestFailureToReadEdits
                  org.apache.hadoop.hdfs.server.namenode.snapshot.TestSnapshotDeletion
                  org.apache.hadoop.hdfs.server.namenode.TestFSImageWithSnapshot
                  org.apache.hadoop.hdfs.server.namenode.snapshot.TestSnapshotBlocksMap
                  org.apache.hadoop.hdfs.TestRollingUpgradeRollback
                  org.apache.hadoop.hdfs.server.namenode.TestNameEditsConfigs
                  org.apache.hadoop.hdfs.server.namenode.ha.TestDFSUpgradeWithHA
                  org.apache.hadoop.hdfs.TestDFSUpgradeFromImage
                  org.apache.hadoop.hdfs.server.namenode.TestSecondaryNameNodeUpgrade
                  org.apache.hadoop.hdfs.TestEncryptionZonesWithKMS
                  org.apache.hadoop.hdfs.web.TestWebHDFSXAttr
                  org.apache.hadoop.hdfs.server.namenode.TestFSImage
                  org.apache.hadoop.hdfs.TestBlockStoragePolicy
                  org.apache.hadoop.hdfs.server.namenode.TestFileContextXAttr

                                      The following test timeouts occurred in hadoop-hdfs-project/hadoop-hdfs:

org.apache.hadoop.hdfs.TestFSInputChecker
org.apache.hadoop.hdfs.server.namenode.TestNameNodeXAttr

    {color:green}+1 contrib tests{color}.  The patch passed contrib unit tests.

Test results: https://builds.apache.org/job/PreCommit-HDFS-Build/8280//testReport/
Findbugs warnings: https://builds.apache.org/job/PreCommit-HDFS-Build/8280//artifact/patchprocess/newPatchFindbugsWarningshadoop-hdfs.html
Javac warnings: https://builds.apache.org/job/PreCommit-HDFS-Build/8280//artifact/patchprocess/diffJavacWarnings.txt
Console output: https://builds.apache.org/job/PreCommit-HDFS-Build/8280//console

This message is automatically generated.

> Support for more efficient large directories
> --------------------------------------------
>
>                 Key: HDFS-7174
>                 URL: https://issues.apache.org/jira/browse/HDFS-7174
>             Project: Hadoop HDFS
>          Issue Type: Improvement
>            Reporter: Kihwal Lee
>            Assignee: Kihwal Lee
>            Priority: Critical
>         Attachments: HDFS-7174.patch
>
>
> When the number of children under a directory grows very large, insertion becomes very
costly.  E.g. creating 1M entries takes 10s of minutes.  This is because the complexity of
an insertion is O\(n\). As the size of a list grows, the overhead grows n^2. (integral of
linear function).  It also causes allocations and copies of big arrays.



--
This message was sent by Atlassian JIRA
(v6.3.4#6332)

Mime
View raw message