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https://issues.apache.org/jira/browse/HDFS-9053?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14950856#comment-14950856
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Hadoop QA commented on HDFS-9053:
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| (x) *{color:red}-1 overall{color}* |
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|| Vote || Subsystem || Runtime || Comment ||
| {color:blue}0{color} | pre-patch | 22m 41s | Pre-patch trunk compilation is
healthy. |
| {color:green}+1{color} | @author | 0m 0s | The patch does not contain any
@author tags. |
| {color:green}+1{color} | tests included | 0m 0s | The patch appears to
include 8 new or modified test files. |
| {color:green}+1{color} | javac | 8m 55s | There were no new javac warning
messages. |
| {color:green}+1{color} | javadoc | 11m 28s | There were no new javadoc
warning messages. |
| {color:red}-1{color} | release audit | 0m 22s | The applied patch generated
1 release audit warnings. |
| {color:red}-1{color} | checkstyle | 2m 6s | The applied patch generated 8
new checkstyle issues (total was 0, now 8). |
| {color:red}-1{color} | whitespace | 0m 10s | The patch has 1 line(s) that
end in whitespace. Use git apply --whitespace=fix. |
| {color:green}+1{color} | install | 1m 47s | mvn install still works. |
| {color:green}+1{color} | eclipse:eclipse | 0m 38s | The patch built with
eclipse:eclipse. |
| {color:green}+1{color} | findbugs | 4m 47s | The patch does not introduce
any new Findbugs (version 3.0.0) warnings. |
| {color:green}+1{color} | common tests | 7m 48s | Tests passed in
hadoop-common. |
| {color:red}-1{color} | hdfs tests | 120m 50s | Tests failed in hadoop-hdfs. |
| | | 181m 56s | |
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|| Reason || Tests ||
| Failed unit tests | hadoop.hdfs.TestWriteRead |
| | hadoop.hdfs.server.namenode.ha.TestDNFencing |
| | hadoop.hdfs.TestHFlush |
| | hadoop.security.TestPermission |
| | hadoop.hdfs.TestParallelRead |
| | hadoop.fs.viewfs.TestViewFsHdfs |
| | hadoop.hdfs.TestBlockReaderLocalLegacy |
| | hadoop.hdfs.server.namenode.TestXAttrConfigFlag |
| | hadoop.hdfs.TestPread |
| | hadoop.hdfs.TestMiniDFSCluster |
| | hadoop.hdfs.TestDFSStripedOutputStream |
| | hadoop.hdfs.TestWriteConfigurationToDFS |
| | hadoop.hdfs.TestDatanodeRegistration |
| | hadoop.hdfs.web.TestWebHDFSXAttr |
| | hadoop.hdfs.TestDFSRollback |
| | hadoop.hdfs.TestDataTransferKeepalive |
| | hadoop.hdfs.server.namenode.ha.TestDelegationTokensWithHA |
| | hadoop.hdfs.TestDatanodeConfig |
| | hadoop.hdfs.TestDFSFinalize |
| | hadoop.hdfs.server.namenode.ha.TestGetGroupsWithHA |
| | hadoop.fs.TestWebHdfsFileContextMainOperations |
| | hadoop.fs.TestGlobPaths |
| | hadoop.hdfs.TestDFSShell |
| | hadoop.hdfs.tools.TestDFSHAAdminMiniCluster |
| | hadoop.hdfs.TestSeekBug |
| | hadoop.fs.loadGenerator.TestLoadGenerator |
| | hadoop.hdfs.TestCrcCorruption |
| | hadoop.fs.contract.hdfs.TestHDFSContractMkdir |
| | hadoop.hdfs.TestAbandonBlock |
| | hadoop.hdfs.TestGetFileChecksum |
| | hadoop.hdfs.TestSafeModeWithStripedFile |
| |
hadoop.hdfs.tools.offlineImageViewer.TestOfflineImageViewerForContentSummary |
| | hadoop.hdfs.TestFileCreationDelete |
| | hadoop.hdfs.TestReadWhileWriting |
| | hadoop.fs.viewfs.TestViewFileSystemWithAcls |
| | hadoop.fs.contract.hdfs.TestHDFSContractConcat |
| | hadoop.hdfs.TestDFSStripedOutputStreamWithFailure010 |
| | hadoop.hdfs.util.TestDiff |
| | hadoop.hdfs.security.TestDelegationToken |
| | hadoop.fs.TestSymlinkHdfsDisable |
| | hadoop.fs.contract.hdfs.TestHDFSContractRootDirectory |
| | hadoop.hdfs.TestMissingBlocksAlert |
| | hadoop.hdfs.TestBlocksScheduledCounter |
| | hadoop.hdfs.TestSmallBlock |
| | hadoop.cli.TestDeleteCLI |
| | hadoop.hdfs.TestDFSClientRetries |
| | hadoop.fs.viewfs.TestViewFsWithXAttrs |
| | hadoop.hdfs.TestDFSMkdirs |
| | hadoop.hdfs.tools.TestDFSAdmin |
| | hadoop.hdfs.server.namenode.TestFavoredNodesEndToEnd |
| | hadoop.hdfs.server.namenode.TestNameNodeMXBean |
| | hadoop.hdfs.web.TestWebHDFSForHA |
| | hadoop.fs.viewfs.TestViewFsDefaultValue |
| | hadoop.fs.contract.hdfs.TestHDFSContractOpen |
| | hadoop.hdfs.server.namenode.TestDeleteRace |
| | hadoop.hdfs.TestFSInputChecker |
| | hadoop.hdfs.web.TestWebHdfsWithAuthenticationFilter |
| | hadoop.fs.contract.hdfs.TestHDFSContractRename |
| | hadoop.hdfs.server.namenode.ha.TestXAttrsWithHA |
| | hadoop.hdfs.server.namenode.ha.TestHAMetrics |
| | hadoop.cli.TestErasureCodingCLI |
| | hadoop.hdfs.TestRollingUpgradeRollback |
| | hadoop.hdfs.TestRemoteBlockReader |
| | hadoop.hdfs.server.namenode.TestNameNodeResourceChecker |
| | hadoop.hdfs.tools.TestDFSAdminWithHA |
| | hadoop.hdfs.TestBlockStoragePolicy |
| | hadoop.hdfs.TestLeaseRecovery |
| | hadoop.fs.viewfs.TestViewFsAtHdfsRoot |
| | hadoop.hdfs.TestBlockReaderLocal |
| | hadoop.fs.contract.hdfs.TestHDFSContractGetFileStatus |
| | hadoop.cli.TestCryptoAdminCLI |
| | hadoop.hdfs.tools.offlineImageViewer.TestOfflineImageViewerForXAttr |
| | hadoop.hdfs.tools.TestDebugAdmin |
| | hadoop.security.TestRefreshUserMappings |
| | hadoop.hdfs.TestReadStripedFileWithDecoding |
| | hadoop.hdfs.TestLargeBlock |
| | hadoop.fs.viewfs.TestViewFileSystemWithXAttrs |
| | hadoop.hdfs.tools.TestDFSZKFailoverController |
| | hadoop.hdfs.TestDistributedFileSystem |
| | hadoop.hdfs.TestListFilesInFileContext |
| | hadoop.hdfs.tools.TestDelegationTokenFetcher |
| | hadoop.fs.TestFcHdfsSetUMask |
| | hadoop.hdfs.security.TestClientProtocolWithDelegationToken |
| | hadoop.hdfs.TestLeaseRecovery2 |
| | hadoop.hdfs.TestDatanodeReport |
| | hadoop.hdfs.TestFileAppend2 |
| | hadoop.fs.shell.TestHdfsTextCommand |
| | hadoop.hdfs.TestFsShellPermission |
| | hadoop.hdfs.TestHDFSServerPorts |
| | hadoop.hdfs.TestRollingUpgradeDowngrade |
| | hadoop.hdfs.TestFileLengthOnClusterRestart |
| | hadoop.hdfs.security.TestDelegationTokenForProxyUser |
| | hadoop.hdfs.TestWriteReadStripedFile |
| | hadoop.TestGenericRefresh |
| | hadoop.hdfs.TestParallelUnixDomainRead |
| | hadoop.fs.TestSymlinkHdfsFileSystem |
| | hadoop.hdfs.TestGetBlocks |
| | hadoop.hdfs.security.token.block.TestBlockToken |
| | hadoop.fs.contract.hdfs.TestHDFSContractAppend |
| | hadoop.fs.contract.hdfs.TestHDFSContractDelete |
| | hadoop.hdfs.web.TestWebHdfsTokens |
| | hadoop.hdfs.TestErasureCodingPolicies |
| | hadoop.hdfs.server.namenode.TestNNThroughputBenchmark |
| | hadoop.hdfs.TestEncryptionZonesWithKMS |
| | hadoop.hdfs.TestClientReportBadBlock |
| | hadoop.hdfs.TestDFSStorageStateRecovery |
| | hadoop.cli.TestHDFSCLI |
| | hadoop.fs.TestSWebHdfsFileContextMainOperations |
| | hadoop.hdfs.TestRestartDFS |
| | hadoop.hdfs.TestFileAppend4 |
| | hadoop.hdfs.web.TestWebHdfsUrl |
| | hadoop.hdfs.TestSetTimes |
| | hadoop.hdfs.server.namenode.ha.TestSeveralNameNodes |
| | hadoop.hdfs.server.namenode.TestSecondaryWebUi |
| | hadoop.fs.viewfs.TestViewFileSystemAtHdfsRoot |
| | hadoop.fs.contract.hdfs.TestHDFSContractSeek |
| | hadoop.hdfs.TestSetrepIncreasing |
| | hadoop.fs.viewfs.TestViewFsWithAcls |
| | hadoop.hdfs.TestLease |
| | hadoop.hdfs.TestSafeMode |
| | hadoop.hdfs.server.namenode.TestEditLogAutoroll |
| | hadoop.hdfs.TestDFSUpgrade |
| | hadoop.hdfs.TestDecommission |
| | hadoop.hdfs.TestFileStatusWithECPolicy |
| | hadoop.hdfs.protocol.datatransfer.sasl.TestSaslDataTransfer |
| | hadoop.fs.TestHDFSFileContextMainOperations |
| | hadoop.hdfs.TestFileCorruption |
| | hadoop.hdfs.TestDatanodeStartupFixesLegacyStorageIDs |
| | hadoop.hdfs.TestQuota |
| | hadoop.hdfs.server.namenode.ha.TestHarFileSystemWithHA |
| | hadoop.hdfs.TestFileStatus |
| | hadoop.fs.TestResolveHdfsSymlink |
| | hadoop.fs.TestSymlinkHdfsFileContext |
| | hadoop.hdfs.TestEncryptionZonesWithHA |
| | hadoop.hdfs.server.namenode.TestDeadDatanode |
| | hadoop.hdfs.TestDFSStripedOutputStreamWithFailure000 |
| | hadoop.cli.TestXAttrCLI |
| | hadoop.fs.TestUrlStreamHandler |
| | hadoop.hdfs.TestClose |
| | hadoop.hdfs.TestMultiThreadedHflush |
| | hadoop.hdfs.TestDFSClientExcludedNodes |
| | hadoop.hdfs.TestFileConcurrentReader |
| | hadoop.hdfs.TestClientBlockVerification |
| | hadoop.security.TestPermissionSymlinks |
| | hadoop.hdfs.server.namenode.ha.TestBootstrapStandby |
| | hadoop.cli.TestAclCLI |
| | hadoop.hdfs.TestDataTransferProtocol |
| | hadoop.hdfs.TestBlockReaderFactory |
| | hadoop.hdfs.server.namenode.TestNameNodeRespectsBindHostKeys |
| | hadoop.hdfs.server.namenode.web.resources.TestWebHdfsDataLocality |
| | hadoop.cli.TestCacheAdminCLI |
| | hadoop.hdfs.TestDatanodeDeath |
| | hadoop.hdfs.TestPipelines |
| | hadoop.hdfs.web.TestWebHDFSAcl |
| |
hadoop.hdfs.tools.offlineImageViewer.TestOfflineImageViewerWithStripedBlocks |
| | hadoop.hdfs.server.namenode.TestFSImage |
| | hadoop.hdfs.web.TestWebHdfsWithMultipleNameNodes |
| | hadoop.fs.TestUnbuffer |
| | hadoop.hdfs.server.namenode.TestFsckWithMultipleNameNodes |
| | hadoop.hdfs.server.namenode.ha.TestFailureOfSharedDir |
| | hadoop.hdfs.TestRenameWhileOpen |
| | hadoop.hdfs.web.TestHttpsFileSystem |
| | hadoop.hdfs.server.namenode.ha.TestPendingCorruptDnMessages |
| | hadoop.hdfs.TestWriteBlockGetsBlockLengthHint |
| | hadoop.hdfs.tools.TestStoragePolicyCommands |
| | hadoop.hdfs.server.namenode.TestNamenodeRetryCache |
| | hadoop.hdfs.server.namenode.TestDecommissioningStatus |
| | hadoop.hdfs.TestDFSStartupVersions |
| | hadoop.hdfs.tools.offlineImageViewer.TestOfflineImageViewerForAcl |
| | hadoop.hdfs.server.namenode.ha.TestHAStateTransitions |
| | hadoop.hdfs.TestAppendSnapshotTruncate |
| | hadoop.hdfs.TestParallelShortCircuitReadUnCached |
| | hadoop.hdfs.TestDFSClientFailover |
| | hadoop.hdfs.TestFSOutputSummer |
| | hadoop.hdfs.server.namenode.TestHDFSConcat |
| | hadoop.hdfs.server.namenode.ha.TestInitializeSharedEdits |
| | hadoop.hdfs.web.TestFSMainOperationsWebHdfs |
| | hadoop.hdfs.TestDFSInotifyEventInputStream |
| | hadoop.hdfs.server.namenode.ha.TestRetryCacheWithHA |
| | hadoop.hdfs.server.namenode.TestStartupOptionUpgrade |
| | hadoop.hdfs.TestBalancerBandwidth |
| | hadoop.hdfs.TestDFSPermission |
| | hadoop.fs.viewfs.TestViewFileSystemHdfs |
| | hadoop.hdfs.TestListFilesInDFS |
| | hadoop.hdfs.TestModTime |
| | hadoop.hdfs.TestReservedRawPaths |
| | hadoop.hdfs.TestHDFSFileSystemContract |
| | hadoop.fs.contract.hdfs.TestHDFSContractSetTimes |
| | hadoop.hdfs.server.namenode.TestHostsFiles |
| | hadoop.hdfs.TestFileCreation |
| | hadoop.fs.viewfs.TestViewFsFileStatusHdfs |
| | hadoop.hdfs.TestDFSShellGenericOptions |
| | hadoop.hdfs.TestParallelShortCircuitRead |
| | hadoop.hdfs.TestHDFSTrash |
| | hadoop.hdfs.TestParallelShortCircuitLegacyRead |
| | hadoop.hdfs.TestFileCreationEmpty |
| | hadoop.hdfs.TestRead |
| | hadoop.hdfs.TestFileAppend |
| | hadoop.hdfs.web.TestWebHdfsFileSystemContract |
| | hadoop.hdfs.server.namenode.TestSecureNameNode |
| | hadoop.hdfs.TestDFSAddressConfig |
| | hadoop.hdfs.web.TestWebHDFS |
| | hadoop.hdfs.tools.offlineEditsViewer.TestOfflineEditsViewer |
| | hadoop.hdfs.TestReplaceDatanodeOnFailure |
| | hadoop.hdfs.server.namenode.TestAddBlock |
| | hadoop.tools.TestJMXGet |
| | hadoop.fs.TestFcHdfsCreateMkdir |
| | hadoop.fs.TestFcHdfsPermission |
| | hadoop.hdfs.server.namenode.ha.TestPipelinesFailover |
| | hadoop.hdfs.TestFetchImage |
| | hadoop.hdfs.TestInjectionForSimulatedStorage |
| | hadoop.hdfs.server.namenode.TestNameNodeMetricsLogger |
| | hadoop.hdfs.TestFileCreationClient |
| | hadoop.hdfs.server.namenode.TestNameEditsConfigs |
| | hadoop.hdfs.TestClientProtocolForPipelineRecovery |
| | hadoop.hdfs.TestDFSRemove |
| | hadoop.hdfs.TestFileAppendRestart |
| | hadoop.fs.contract.hdfs.TestHDFSContractCreate |
| | hadoop.net.TestNetworkTopology |
| | hadoop.hdfs.TestDFSOutputStream |
| | hadoop.hdfs.TestDisableConnCache |
| | hadoop.hdfs.TestParallelShortCircuitReadNoChecksum |
| | hadoop.hdfs.tools.TestGetGroups |
| | hadoop.hdfs.server.namenode.ha.TestStandbyCheckpoints |
| | hadoop.hdfs.tools.offlineImageViewer.TestOfflineImageViewer |
| | hadoop.fs.TestEnhancedByteBufferAccess |
| | hadoop.hdfs.TestBlockMissingException |
| | hadoop.fs.permission.TestStickyBit |
| Timed out tests | org.apache.hadoop.hdfs.server.namenode.ha.TestHASafeMode |
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|| Subsystem || Report/Notes ||
| Patch URL |
http://issues.apache.org/jira/secure/attachment/12765801/HDFS-9053.006.patch |
| Optional Tests | javadoc javac unit findbugs checkstyle |
| git revision | trunk / 4aa9b3e |
| Release Audit |
https://builds.apache.org/job/PreCommit-HDFS-Build/12892/artifact/patchprocess/patchReleaseAuditProblems.txt
|
| checkstyle |
https://builds.apache.org/job/PreCommit-HDFS-Build/12892/artifact/patchprocess/diffcheckstylehadoop-common.txt
|
| whitespace |
https://builds.apache.org/job/PreCommit-HDFS-Build/12892/artifact/patchprocess/whitespace.txt
|
| hadoop-common test log |
https://builds.apache.org/job/PreCommit-HDFS-Build/12892/artifact/patchprocess/testrun_hadoop-common.txt
|
| hadoop-hdfs test log |
https://builds.apache.org/job/PreCommit-HDFS-Build/12892/artifact/patchprocess/testrun_hadoop-hdfs.txt
|
| Test Results |
https://builds.apache.org/job/PreCommit-HDFS-Build/12892/testReport/ |
| Java | 1.7.0_55 |
| uname | Linux asf907.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/12892/console |
This message was automatically generated.
> Support large directories efficiently using B-Tree
> --------------------------------------------------
>
> Key: HDFS-9053
> URL: https://issues.apache.org/jira/browse/HDFS-9053
> Project: Hadoop HDFS
> Issue Type: Improvement
> Components: namenode
> Reporter: Yi Liu
> Assignee: Yi Liu
> Priority: Critical
> Attachments: HDFS-9053 (BTree with simple benchmark).patch, HDFS-9053
> (BTree).patch, HDFS-9053.001.patch, HDFS-9053.002.patch, HDFS-9053.003.patch,
> HDFS-9053.004.patch, HDFS-9053.005.patch, HDFS-9053.006.patch
>
>
> This is a long standing issue, we were trying to improve this in the past.
> Currently we use an ArrayList for the children under a directory, and the
> children are ordered in the list, for insert/delete, the time complexity is
> O\(n), (the search is O(log n), but insertion/deleting causes re-allocations
> and copies of arrays), for large directory, the operations are expensive. If
> the children grow to 1M size, the ArrayList will resize to > 1M capacity, so
> need > 1M * 8bytes = 8M (the reference size is 8 for 64-bits system/JVM)
> continuous heap memory, it easily causes full GC in HDFS cluster where
> namenode heap memory is already highly used. I recap the 3 main issues:
> # Insertion/deletion operations in large directories are expensive because
> re-allocations and copies of big arrays.
> # Dynamically allocate several MB continuous heap memory which will be
> long-lived can easily cause full GC problem.
> # Even most children are removed later, but the directory INode still
> occupies same size heap memory, since the ArrayList will never shrink.
> This JIRA is similar to HDFS-7174 created by [~kihwal], but use B-Tree to
> solve the problem suggested by [~shv].
> So the target of this JIRA is to implement a low memory footprint B-Tree and
> use it to replace ArrayList.
> If the elements size is not large (less than the maximum degree of B-Tree
> node), the B-Tree only has one root node which contains an array for the
> elements. And if the size grows large enough, it will split automatically,
> and if elements are removed, then B-Tree nodes can merge automatically (see
> more: https://en.wikipedia.org/wiki/B-tree). It will solve the above 3
> issues.
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