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Flume, mail # user - flume-ng error while writing to hdfs


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Re: flume-ng error while writing to hdfs
Mohammad Tariq 2012-08-16, 18:25
Hello Sandeep

   Please edit the "dfs.web.ugi" property in hdfs-site.xml. It is by
default "webuser,webgroup".

Regards,
    Mohammad Tariq

On Thu, Aug 16, 2012 at 11:50 PM, Sandeep Reddy P <
[EMAIL PROTECTED]> wrote:

> Hi,
> I'm using flume-ng to write data from log file to HDFS but unable to
> write. I got the following exceptions in Name node logs
>
> 2012-08-16 13:57:42,560 INFO
> org.apache.hadoop.hdfs.server.namenode.FSNamesystem: Number of
> transactions: 1 Total time for transactions(ms): 0Number of transactions
> batched in Syncs: 0 Number of syncs: 0 SyncTimes(ms): 0 0 0
> 2012-08-16 13:57:59,293 WARN
> org.apache.hadoop.security.ShellBasedUnixGroupsMapping: got exception
> trying to get groups for user webuser
> org.apache.hadoop.util.Shell$ExitCodeException: id: webuser: No such user
>
>         at org.apache.hadoop.util.Shell.runCommand(Shell.java:255)
>         at org.apache.hadoop.util.Shell.run(Shell.java:182)
>         at
> org.apache.hadoop.util.Shell$ShellCommandExecutor.execute(Shell.java:375)
>         at org.apache.hadoop.util.Shell.execCommand(Shell.java:461)
>         at org.apache.hadoop.util.Shell.execCommand(Shell.java:444)
>         at
> org.apache.hadoop.security.ShellBasedUnixGroupsMapping.getUnixGroups(ShellBasedUnixGroupsMapping.java:66)
>         at
> org.apache.hadoop.security.ShellBasedUnixGroupsMapping.getGroups(ShellBasedUnixGroupsMapping.java:43)
>         at org.apache.hadoop.security.Groups.getGroups(Groups.java:79)
>         at
> org.apache.hadoop.security.UserGroupInformation.getGroupNames(UserGroupInformation.java:1083)
>         at
> org.apache.hadoop.hdfs.server.namenode.FSPermissionChecker.<init>(FSPermissionChecker.java:50)
>         at
> org.apache.hadoop.hdfs.server.namenode.FSNamesystem.checkPermission(FSNamesystem.java:5203)
>         at
> org.apache.hadoop.hdfs.server.namenode.FSNamesystem.checkTraverse(FSNamesystem.java:5186)
>         at
> org.apache.hadoop.hdfs.server.namenode.FSNamesystem.getFileInfo(FSNamesystem.java:1994)
>         at
> org.apache.hadoop.hdfs.server.namenode.NameNode.getFileInfo(NameNode.java:819)
>         at sun.reflect.GeneratedMethodAccessor4.invoke(Unknown Source)
>         at
> sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
>         at java.lang.reflect.Method.invoke(Method.java:597)
>         at org.apache.hadoop.ipc.RPC$Server.call(RPC.java:557)
>         at org.apache.hadoop.ipc.Server$Handler$1.run(Server.java:1434)
>         at org.apache.hadoop.ipc.Server$Handler$1.run(Server.java:1430)
>         at java.security.AccessController.doPrivileged(Native Method)
>         at javax.security.auth.Subject.doAs(Subject.java:396)
>         at
> org.apache.hadoop.security.UserGroupInformation.doAs(UserGroupInformation.java:1177)
>         at org.apache.hadoop.ipc.Server$Handler.run(Server.java:1428)
>
>
> --
> Thanks,
> sandeep
>
>