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From "Hadoop QA (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (HDFS-7270) Add congestion signaling capability to DataNode write protocol
Date Wed, 04 Feb 2015 22:42:37 GMT

    [ https://issues.apache.org/jira/browse/HDFS-7270?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14306141#comment-14306141
] 

Hadoop QA commented on HDFS-7270:
---------------------------------

{color:red}-1 overall{color}.  Here are the results of testing the latest attachment 
  http://issues.apache.org/jira/secure/attachment/12696311/HDFS-7270.003.patch
  against trunk revision 064e077.

    {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:green}+1 javac{color}.  The applied patch does not increase the total number of
javac compiler 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:green}+1 findbugs{color}.  The patch does not introduce any 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.TestSetrepIncreasing
                  org.apache.hadoop.hdfs.TestModTime
                  org.apache.hadoop.hdfs.TestDFSClientRetries
                  org.apache.hadoop.hdfs.TestSetrepDecreasing
                  org.apache.hadoop.hdfs.server.datanode.TestDataNodeHotSwapVolumes
                  org.apache.hadoop.hdfs.server.namenode.TestDeleteRace
                  org.apache.hadoop.hdfs.TestPread
                  org.apache.hadoop.hdfs.server.namenode.TestFSDirectory
                  org.apache.hadoop.hdfs.server.namenode.TestFileTruncate
                  org.apache.hadoop.hdfs.TestReadWhileWriting
                  org.apache.hadoop.hdfs.server.blockmanagement.TestPendingInvalidateBlock
                  org.apache.hadoop.hdfs.server.blockmanagement.TestBlockTokenWithDFS
                  org.apache.hadoop.hdfs.server.datanode.fsdataset.impl.TestLazyPersistFiles
                  org.apache.hadoop.hdfs.server.namenode.TestHDFSConcat
                  org.apache.hadoop.hdfs.protocol.datatransfer.sasl.TestSaslDataTransfer
                  org.apache.hadoop.hdfs.web.TestWebHdfsWithMultipleNameNodes
                  org.apache.hadoop.hdfs.TestClientProtocolForPipelineRecovery
                  org.apache.hadoop.hdfs.server.mover.TestStorageMover
                  org.apache.hadoop.hdfs.server.datanode.TestBlockReplacement
                  org.apache.hadoop.hdfs.server.datanode.fsdataset.impl.TestInterDatanodeProtocol
                  org.apache.hadoop.hdfs.server.namenode.snapshot.TestSnapshotBlocksMap
                  org.apache.hadoop.hdfs.TestFileAppend
                  org.apache.hadoop.hdfs.TestEncryptedTransfer
                  org.apache.hadoop.hdfs.server.blockmanagement.TestBlocksWithNotEnoughRacks
                  org.apache.hadoop.hdfs.server.datanode.TestHSync
                  org.apache.hadoop.hdfs.web.TestWebHdfsFileSystemContract
                  org.apache.hadoop.hdfs.server.namenode.metrics.TestNameNodeMetrics
                  org.apache.hadoop.hdfs.TestFileAppendRestart
                  org.apache.hadoop.hdfs.server.namenode.ha.TestStandbyBlockManagement
                  org.apache.hadoop.tracing.TestTracing
                  org.apache.hadoop.hdfs.server.namenode.ha.TestRetryCacheWithHA
                  org.apache.hadoop.hdfs.web.TestWebHDFS
                  org.apache.hadoop.hdfs.server.namenode.TestParallelImageWrite
                  org.apache.hadoop.hdfs.TestReplication
                  org.apache.hadoop.hdfs.server.datanode.TestBlockHasMultipleReplicasOnSameDN
                  org.apache.hadoop.hdfs.TestFileAppend4
                  org.apache.hadoop.hdfs.server.namenode.snapshot.TestSnapshotDiffReport
                  org.apache.hadoop.hdfs.server.datanode.fsdataset.impl.TestDatanodeRestart
                  org.apache.hadoop.hdfs.TestWriteRead
                  org.apache.hadoop.hdfs.server.namenode.web.resources.TestWebHdfsDataLocality
                  org.apache.hadoop.hdfs.server.namenode.TestDecommissioningStatus
                  org.apache.hadoop.hdfs.server.blockmanagement.TestRBWBlockInvalidation
                  org.apache.hadoop.hdfs.server.datanode.TestDataNodeVolumeFailureToleration
                  org.apache.hadoop.hdfs.server.namenode.snapshot.TestSnapshotMetrics
                  org.apache.hadoop.hdfs.TestDecommission
                  org.apache.hadoop.hdfs.TestCrcCorruption
                  org.apache.hadoop.hdfs.server.namenode.TestINodeFile
                  org.apache.hadoop.hdfs.server.namenode.ha.TestPipelinesFailover
                  org.apache.hadoop.hdfs.server.balancer.TestBalancerWithEncryptedTransfer
                  org.apache.hadoop.hdfs.TestDFSRemove
                  org.apache.hadoop.hdfs.server.namenode.snapshot.TestSnapshotReplication
                  org.apache.hadoop.hdfs.server.mover.TestMover
                  org.apache.hadoop.hdfs.server.blockmanagement.TestComputeInvalidateWork
                  org.apache.hadoop.hdfs.server.namenode.TestCacheDirectives
                  org.apache.hadoop.hdfs.TestFileAppend2
                  org.apache.hadoop.hdfs.TestRestartDFS
                  org.apache.hadoop.hdfs.TestFileAppend3
                  org.apache.hadoop.hdfs.server.namenode.snapshot.TestINodeFileUnderConstructionWithSnapshot
                  org.apache.hadoop.hdfs.TestQuota
                  org.apache.hadoop.hdfs.TestInjectionForSimulatedStorage
                  org.apache.hadoop.hdfs.server.balancer.TestBalancerWithHANameNodes
                  org.apache.hadoop.hdfs.web.TestFSMainOperationsWebHdfs
                  org.apache.hadoop.hdfs.server.namenode.TestSnapshotPathINodes
                  org.apache.hadoop.hdfs.server.namenode.ha.TestStandbyIsHot
                  org.apache.hadoop.security.TestPermission
                  org.apache.hadoop.hdfs.server.balancer.TestBalancerWithNodeGroup
                  org.apache.hadoop.hdfs.TestGetBlocks
                  org.apache.hadoop.hdfs.server.blockmanagement.TestOverReplicatedBlocks
                  org.apache.hadoop.hdfs.server.namenode.TestFsck
                  org.apache.hadoop.hdfs.server.namenode.TestAuditLogs
                  org.apache.hadoop.hdfs.server.namenode.snapshot.TestNestedSnapshots
                  org.apache.hadoop.hdfs.TestMultiThreadedHflush
                  org.apache.hadoop.hdfs.server.blockmanagement.TestUnderReplicatedBlocks
                  org.apache.hadoop.security.TestPermissionSymlinks
                  org.apache.hadoop.hdfs.TestClientReportBadBlock
                  org.apache.hadoop.hdfs.server.namenode.snapshot.TestOpenFilesWithSnapshot
                  org.apache.hadoop.hdfs.TestGetFileChecksum
                  org.apache.hadoop.hdfs.server.namenode.TestNameEditsConfigs
                  org.apache.hadoop.hdfs.TestBlockStoragePolicy
                  org.apache.hadoop.hdfs.TestDFSClientExcludedNodes
                  org.apache.hadoop.hdfs.server.datanode.TestNNHandlesBlockReportPerStorage
                  org.apache.hadoop.fs.permission.TestStickyBit
                  org.apache.hadoop.hdfs.server.namenode.snapshot.TestSnapshotDeletion
                  org.apache.hadoop.hdfs.TestFileCreation
                  org.apache.hadoop.hdfs.server.namenode.ha.TestHASafeMode
                  org.apache.hadoop.hdfs.server.namenode.snapshot.TestSnapshot
                  org.apache.hadoop.hdfs.server.namenode.TestDiskspaceQuotaUpdate
                  org.apache.hadoop.hdfs.TestDatanodeDeath
                  org.apache.hadoop.hdfs.server.datanode.TestDataNodeVolumeFailureReporting
                  org.apache.hadoop.hdfs.server.datanode.TestNNHandlesCombinedBlockReport
                  org.apache.hadoop.hdfs.server.namenode.TestFSImageWithSnapshot
                  org.apache.hadoop.hdfs.TestPipelines
                  org.apache.hadoop.fs.loadGenerator.TestLoadGenerator
                  org.apache.hadoop.hdfs.server.namenode.snapshot.TestSnapshotRename
                  org.apache.hadoop.hdfs.server.namenode.TestProcessCorruptBlocks
                  org.apache.hadoop.hdfs.TestLeaseRecovery2
                  org.apache.hadoop.hdfs.TestFileCorruption
                  org.apache.hadoop.hdfs.server.namenode.TestNamenodeCapacityReport
                  org.apache.hadoop.hdfs.server.blockmanagement.TestPendingReplication
                  org.apache.hadoop.hdfs.server.balancer.TestBalancerWithSaslDataTransfer
                  org.apache.hadoop.hdfs.server.namenode.ha.TestHAAppend
                  org.apache.hadoop.hdfs.server.namenode.TestBackupNode
                  org.apache.hadoop.hdfs.server.datanode.TestDataNodeVolumeFailure
                  org.apache.hadoop.hdfs.TestReplaceDatanodeOnFailure
                  org.apache.hadoop.hdfs.server.namenode.TestFavoredNodesEndToEnd
                  org.apache.hadoop.hdfs.server.namenode.TestAddBlock
                  org.apache.hadoop.hdfs.server.namenode.ha.TestDNFencingWithReplication
                  org.apache.hadoop.hdfs.server.namenode.snapshot.TestRenameWithSnapshots
                  org.apache.hadoop.hdfs.server.namenode.snapshot.TestSnapshottableDirListing
                  org.apache.hadoop.hdfs.TestLease
                  org.apache.hadoop.hdfs.server.namenode.snapshot.TestSetQuotaWithSnapshot
                  org.apache.hadoop.hdfs.server.namenode.TestCheckpoint
                  org.apache.hadoop.hdfs.server.namenode.ha.TestDNFencing
                  org.apache.hadoop.hdfs.TestLeaseRecovery

Test results: https://builds.apache.org/job/PreCommit-HDFS-Build/9431//testReport/
Console output: https://builds.apache.org/job/PreCommit-HDFS-Build/9431//console

This message is automatically generated.

> Add congestion signaling capability to DataNode write protocol
> --------------------------------------------------------------
>
>                 Key: HDFS-7270
>                 URL: https://issues.apache.org/jira/browse/HDFS-7270
>             Project: Hadoop HDFS
>          Issue Type: Improvement
>          Components: datanode
>            Reporter: Haohui Mai
>            Assignee: Haohui Mai
>         Attachments: HDFS-7270.000.patch, HDFS-7270.001.patch, HDFS-7270.002.patch, HDFS-7270.003.patch
>
>
> When a client writes to HDFS faster than the disk bandwidth of the DNs, it  saturates
the disk bandwidth and put the DNs unresponsive. The client only backs off by aborting / recovering
the pipeline, which leads to failed writes and unnecessary pipeline recovery.
> This jira proposes to add explicit congestion control mechanisms in the writing pipeline.




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