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https://issues.apache.org/jira/browse/HDFS-14800?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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hemanthboyina updated HDFS-14800:
---------------------------------
Comment: was deleted
(was: hi [~LiJinglun] when the file creation is completed , the
BlockUnderConstructionFeature will become null )
> Data race between block report and recoverLease()
> -------------------------------------------------
>
> Key: HDFS-14800
> URL: https://issues.apache.org/jira/browse/HDFS-14800
> Project: Hadoop HDFS
> Issue Type: Bug
> Reporter: Wei-Chiu Chuang
> Priority: Major
> Attachments: PreCommit-HDFS-Build #27717 test -
> testUpgradeFromRel1BBWImage [Jenkins].pdf
>
>
> I thought I fixed it in HDFS-10240, but I am seeing a similar race condition
> in a precommit test again.
> https://builds.apache.org/job/PreCommit-HDFS-Build/27717/testReport/org.apache.hadoop.hdfs/TestDFSUpgradeFromImage/testUpgradeFromRel1BBWImage/
> {noformat}
> 2019-08-29 13:34:31,788 [IPC Server handler 9 on default port 39637] INFO
> namenode.FSNamesystem (FSNamesystem.java:recoverLeaseInternal(2682)) -
> recoverLease: [Lease. Holder: DFSClient_8256078, pending creates: 13],
> src=/1kb-multiple-checksum-blocks-64-16 from client DFSClient_8256078
> 2019-08-29 13:34:31,788 [IPC Server handler 9 on default port 39637] INFO
> namenode.FSNamesystem (FSNamesystem.java:internalReleaseLease(3424)) -
> Recovering [Lease. Holder: DFSClient_8256078, pending creates: 13],
> src=/1kb-multiple-checksum-blocks-64-16
> 2019-08-29 13:34:31,789 [IPC Server handler 9 on default port 39637] WARN
> BlockStateChange
> (BlockUnderConstructionFeature.java:initializeBlockRecovery(238)) - BLOCK*
> BlockUnderConstructionFeature.initializeBlockRecovery: No blocks found, lease
> removed.
> 2019-08-29 13:34:31,790 [IPC Server handler 9 on default port 39637] WARN
> hdfs.StateChange (FSNamesystem.java:internalReleaseLease(3550)) - DIR*
> NameSystem.internalReleaseLease: File /1kb-multiple-checksum-blocks-64-16 has
> not been closed. Lease recovery is in progress. RecoveryId = 1031 for block
> blk_7162739548153522810_1020
> 2019-08-29 13:34:31,791 [Block report processor] INFO BlockStateChange
> (BlockManager.java:processReport(2645)) - BLOCK* processReport
> 0x8f0bcadff51597e8: Processing first storage report for
> DS-dd914776-8c9f-4f0d-9bd3-91a552bdc351 from datanode
> 187b2e09-75e8-4bd0-ab46-90e32839a21d
> 2019-08-29 13:34:31,793 [Block report processor] INFO BlockStateChange
> (BlockManager.java:processReport(2674)) - BLOCK* processReport
> 0x8f0bcadff51597e8: from storage DS-dd914776-8c9f-4f0d-9bd3-91a552bdc351 node
> DatanodeRegistration(127.0.0.1:32987,
> datanodeUuid=187b2e09-75e8-4bd0-ab46-90e32839a21d, infoPort=42569,
> infoSecurePort=0, ipcPort=39147,
> storageInfo=lv=-57;cid=testClusterId;nsid=889473900;c=1567085670457), blocks:
> 13, hasStaleStorage: false, processing time: 2 msecs, invalidatedBlocks: 0
> 2019-08-29 13:34:31,808 [BP-268013932-172.17.0.2-1567085670423 heartbeating
> to localhost/127.0.0.1:39637] INFO datanode.DataNode
> (BPServiceActor.java:blockReport(432)) - Successfully sent block report
> 0x8f0bcadff51597e8, containing 1 storage report(s), of which we sent 1. The
> reports had 13 total blocks and used 1 RPC(s). This took 4 msecs to generate
> and 33 msecs for RPC and NN processing. Got back no commands.
> 2019-08-29 13:34:32,795 [IPC Server handler 8 on default port 39637] INFO
> namenode.FSNamesystem (FSNamesystem.java:recoverLeaseInternal(2682)) -
> recoverLease: [Lease. Holder: DFSClient_NONMAPREDUCE_1352689944_1, pending
> creates: 1], src=/1kb-multiple-checksum-blocks-64-16 from client
> DFSClient_NONMAPREDUCE_1352689944_1
> 2019-08-29 13:34:32,795 [IPC Server handler 8 on default port 39637] INFO
> namenode.FSNamesystem (FSNamesystem.java:internalReleaseLease(3424)) -
> Recovering [Lease. Holder: DFSClient_NONMAPREDUCE_1352689944_1, pending
> creates: 1], src=/1kb-multiple-checksum-blocks-64-16
> 2019-08-29 13:34:32,796 [IPC Server handler 8 on default port 39637] INFO
> blockmanagement.BlockManager (PendingRecoveryBlocks.java:add(80)) - Block
> recovery attempt for blk_7162739548153522810_1020 rejected, as the previous
> attempt times out in 88 seconds.
> {noformat}
> Looks like if client calls recoverLease on a file before NameNode receives a
> block report from DataNodes, it will fail to recover the lease, and the file
> remains unclosed.
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