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From "tangjunjie (JIRA)" <j...@apache.org>
Subject [jira] [Assigned] (HDFS-8663) sys cpu usage high on namenode server
Date Tue, 22 Sep 2015 01:07:04 GMT

     [ https://issues.apache.org/jira/browse/HDFS-8663?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

tangjunjie reassigned HDFS-8663:
--------------------------------

    Assignee: Eugene Koifman

> sys cpu usage high on namenode server
> -------------------------------------
>
>                 Key: HDFS-8663
>                 URL: https://issues.apache.org/jira/browse/HDFS-8663
>             Project: Hadoop HDFS
>          Issue Type: Bug
>          Components: fs, namenode
>    Affects Versions: 2.3.0
>         Environment: hadoop 2.3.0     centos5.8
>            Reporter: tangjunjie
>            Assignee: Eugene Koifman
>
> sys cpu usage high  on namenode  server lead to run job very slow.
> I use ps -elf see many zombie process.
> I check hdfs log I found many exceptions like:
> org.apache.hadoop.util.Shell$ExitCodeException: id: sem_410: No such user
> 	at org.apache.hadoop.util.Shell.runCommand(Shell.java:505)
> 	at org.apache.hadoop.util.Shell.run(Shell.java:418)
> 	at org.apache.hadoop.util.Shell$ShellCommandExecutor.execute(Shell.java:650)
> 	at org.apache.hadoop.util.Shell.execCommand(Shell.java:739)
> 	at org.apache.hadoop.util.Shell.execCommand(Shell.java:722)
> 	at org.apache.hadoop.security.ShellBasedUnixGroupsMapping.getUnixGroups(ShellBasedUnixGroupsMapping.java:83)
> 	at org.apache.hadoop.security.ShellBasedUnixGroupsMapping.getGroups(ShellBasedUnixGroupsMapping.java:52)
> 	at org.apache.hadoop.security.Groups.getGroups(Groups.java:139)
> 	at org.apache.hadoop.security.UserGroupInformation.getGroupNames(UserGroupInformation.java:1409)
> 	at org.apache.hadoop.hdfs.server.namenode.FSPermissionChecker.<init>(FSPermissionChecker.java:81)
> 	at org.apache.hadoop.hdfs.server.namenode.FSNamesystem.getPermissionChecker(FSNamesystem.java:3310)
> 	at org.apache.hadoop.hdfs.server.namenode.FSNamesystem.getFileInfo(FSNamesystem.java:3491)
> 	at org.apache.hadoop.hdfs.server.namenode.NameNodeRpcServer.getFileInfo(NameNodeRpcServer.java:764)
> 	at org.apache.hadoop.hdfs.protocolPB.ClientNamenodeProtocolServerSideTranslatorPB.getFileInfo(ClientNamenodeProtocolServerSideTranslatorPB.java:764)
> 	at org.apache.hadoop.hdfs.protocol.proto.ClientNamenodeProtocolProtos$ClientNamenodeProtocol$2.callBlockingMethod(ClientNamenodeProtocolProtos.java)
> 	at org.apache.hadoop.ipc.ProtobufRpcEngine$Server$ProtoBufRpcInvoker.call(ProtobufRpcEngine.java:585)
> 	at org.apache.hadoop.ipc.RPC$Server.call(RPC.java:1026)
> 	at org.apache.hadoop.ipc.Server$Handler$1.run(Server.java:1986)
> 	at org.apache.hadoop.ipc.Server$Handler$1.run(Server.java:1982)
> 	at java.security.AccessController.doPrivileged(Native Method)
> 	at javax.security.auth.Subject.doAs(Subject.java:415)
> 	at org.apache.hadoop.security.UserGroupInformation.doAs(UserGroupInformation.java:1548)
> 	at org.apache.hadoop.ipc.Server$Handler.run(Server.java:1980)
> Then I create all user such as sem_410 appear in exception.Then the sys cpu usage on
namenode down.
> BTW, my hadoop 2.3.0 enaable hadoop acl.



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