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https://issues.apache.org/jira/browse/HDFS-9659?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Surendra Singh Lilhore updated HDFS-9659:
-----------------------------------------
Attachment: HDFS-9659.01.patch
> EditLogTailerThread to Active Namenode RPC should timeout
> ---------------------------------------------------------
>
> Key: HDFS-9659
> URL: https://issues.apache.org/jira/browse/HDFS-9659
> Project: Hadoop HDFS
> Issue Type: Bug
> Components: ha, namenode
> Affects Versions: 3.0.0
> Reporter: Surendra Singh Lilhore
> Assignee: Surendra Singh Lilhore
> Priority: Critical
> Attachments: HDFS-9659.01.patch, HDFS-9659.patch
>
>
> {{EditLogTailerThread}} to Active {{Namenode}} RPC doesn't have timeout and
> it’s removed in HDFS-6440.
> When inject the disk slow and consume system IO to the active name node, the
> nameservice can't switch and this is because SNN not able to stop
> {{EditLogTailerThread}}.
> *Thread dump from SNN*
> {noformat}
> "IPC Server handler 33 on 25000" #118 daemon prio=5 os_prio=0
> tid=0x00007f2384409800 nid=0x26c89 in Object.wait() [0x00007f2376ac7000]
> java.lang.Thread.State: WAITING (on object monitor)
> at java.lang.Object.wait(Native Method)
> at java.lang.Thread.join(Thread.java:1245)
> - locked <0x00000006d517f538> (a
> org.apache.hadoop.hdfs.server.namenode.ha.EditLogTailer$EditLogTailerThread)
> at java.lang.Thread.join(Thread.java:1319)
> at
> org.apache.hadoop.hdfs.server.namenode.ha.EditLogTailer.stop(EditLogTailer.java:183)
> at
> org.apache.hadoop.hdfs.server.namenode.FSNamesystem.stopStandbyServices(FSNamesystem.java:1284)
> at
> org.apache.hadoop.hdfs.server.namenode.NameNode$NameNodeHAContext.stopStandbyServices(NameNode.java:1852)
> at
> org.apache.hadoop.hdfs.server.namenode.ha.StandbyState.exitState(StandbyState.java:72)
> at
> org.apache.hadoop.hdfs.server.namenode.ha.HAState.setStateInternal(HAState.java:62)
> at
> org.apache.hadoop.hdfs.server.namenode.ha.StandbyState.setState(StandbyState.java:49)
> at
> org.apache.hadoop.hdfs.server.namenode.NameNode.transitionToActive(NameNode.java:1684)
> {noformat}
> *Thread dump for {{EditLogTailerThread}}*, it is stuck in
> {{NamenodeProtocolTranslatorPB.rollEditLog()}} rpc call.
> {noformat}
> "Edit log tailer" #150 prio=5 os_prio=0 tid=0x00007f2395569800 nid=0x26cac in
> Object.wait() [0x00007f2374aa7000]
> java.lang.Thread.State: WAITING (on object monitor)
> at java.lang.Object.wait(Native Method)
> at java.lang.Object.wait(Object.java:502)
> at org.apache.hadoop.ipc.Client.call(Client.java:1503)
> - locked <0x00000006d581bb90> (a org.apache.hadoop.ipc.Client$Call)
> at org.apache.hadoop.ipc.Client.call(Client.java:1448)
> at
> org.apache.hadoop.ipc.ProtobufRpcEngine$Invoker.invoke(ProtobufRpcEngine.java:229)
> at com.sun.proxy.$Proxy16.rollEditLog(Unknown Source)
> at
> org.apache.hadoop.hdfs.protocolPB.NamenodeProtocolTranslatorPB.rollEditLog(NamenodeProtocolTranslatorPB.java:148)
> at
> org.apache.hadoop.hdfs.server.namenode.ha.EditLogTailer$2.doWork(EditLogTailer.java:301)
> at
> org.apache.hadoop.hdfs.server.namenode.ha.EditLogTailer$2.doWork(EditLogTailer.java:298)
> at
> org.apache.hadoop.hdfs.server.namenode.ha.EditLogTailer$MultipleNameNodeProxy.call(EditLogTailer.java:420)
> {noformat}
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