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From anil gupta <anilgupt...@gmail.com>
Subject Re: LoadIncrementalHFiles always run with "hbase" user
Date Thu, 24 Jan 2013 17:09:22 GMT
Hi Harsh,

Thanks for your response. If i understand you correctly then instead of the
process(java program) that i started, RS is trying to write in the
directory. Hence the error. Right?

If that's the case then it kinda makes sense.

~Anil

On Thu, Jan 24, 2013 at 6:30 AM, Harsh J <harsh@cloudera.com> wrote:

> The exception is remote and seems to indicate that your RS is running
> as the 'hbase' user. RS will attempt to do a mv/rename operation when
> you provide it a bulkloadable file, which will then be attempted as
> the user the RS itself runs as - thereby this error.
>
> On Thu, Jan 24, 2013 at 6:39 AM, anil gupta <anilgupta84@gmail.com> wrote:
> > Hi All,
> >
> > I am generating HFiles by running the bulk loader with a custom mapper.
> > Once the MR job for generating HFile is finished, I trigger the loading
> of
> > HFiles into HBase with the help of following java code:
> > ToolRunner.run(new LoadIncrementalHFiles(HBaseConfiguration.create()),
> new
> > String[]{conf.get("importtsv.bulk.output"), otherArgs[0]});
> >
> > However, while loading i am getting errors related to permissions since
> the
> > loading is being attempted by "hbase" user even though the process(java
> > program) was started by "root". This seems like a bug since the loading
> of
> > data into HBase should also be done as "root". Is there any for only
> using
> > "hbase" user while loading?
> > HBase cluster is not secured. I am using 0.92.1 and its fully distributed
> > cluster. Please help me in resolving this error.
> >
> > Here is the error message:
> > 13/01/23 17:02:16 WARN mapreduce.LoadIncrementalHFiles: Skipping
> > non-directory hdfs://ihubcluster/tmp/hfile_txn_subset/_SUCCESS
> > 13/01/23 17:02:16 INFO hfile.CacheConfig: Allocating LruBlockCache with
> > maximum size 241.7m
> > 13/01/23 17:02:16 INFO mapreduce.LoadIncrementalHFiles: Trying to load
> >
> hfile=hdfs://ihubcluster/tmp/hfile_txn_subset/t/344d58edc7d74e7b9a35ef5e1bf906cc
> >
> first=\x00\x0F(\xC7F\xAD2\xB4\x00\x00\x02\x87\xE1\xB9\x9F\x18\x00\x0C\x1E\x1A\x00\x00\x01<j\x14\x95d
> > last=\x00\x12\xA4\xC6$IP\x9D\x00\x00\x02\x88+\x11\xD2
> > \x00\x0C\x1E\x1A\x00\x00\x01<j\x14\x04A
> > 13/01/23 17:02:55 ERROR mapreduce.LoadIncrementalHFiles: Encountered
> > unrecoverable error from region server
> > org.apache.hadoop.hbase.client.RetriesExhaustedException: Failed after
> > attempts=10, exceptions:
> > Wed Jan 23 17:02:16 PST 2013,
> > org.apache.hadoop.hbase.mapreduce.LoadIncrementalHFiles$3@7b4189d0,
> > org.apache.hadoop.security.AccessControlException:
> > org.apache.hadoop.security.AccessControlException: Permission denied:
> > user=hbase, access=WRITE,
> > inode="/tmp/hfile_txn_subset/t":root:hadoop:drwxr-xr-x
> >     at
> >
> org.apache.hadoop.hdfs.server.namenode.FSPermissionChecker.check(FSPermissionChecker.java:205)
> >     at
> >
> org.apache.hadoop.hdfs.server.namenode.FSPermissionChecker.check(FSPermissionChecker.java:186)
> >     at
> >
> org.apache.hadoop.hdfs.server.namenode.FSPermissionChecker.checkPermission(FSPermissionChecker.java:138)
> >     at
> >
> org.apache.hadoop.hdfs.server.namenode.FSNamesystem.checkPermission(FSNamesystem.java:4265)
> >     at
> >
> org.apache.hadoop.hdfs.server.namenode.FSNamesystem.checkParentAccess(FSNamesystem.java:4231)
> >     at
> >
> org.apache.hadoop.hdfs.server.namenode.FSNamesystem.renameToInternal(FSNamesystem.java:2347)
> >     at
> >
> org.apache.hadoop.hdfs.server.namenode.FSNamesystem.renameTo(FSNamesystem.java:2315)
> >     at
> >
> org.apache.hadoop.hdfs.server.namenode.NameNodeRpcServer.rename(NameNodeRpcServer.java:579)
> >     at
> >
> org.apache.hadoop.hdfs.protocolPB.ClientNamenodeProtocolServerSideTranslatorPB.rename(ClientNamenodeProtocolServerSideTranslatorPB.java:374)
> >     at
> >
> org.apache.hadoop.hdfs.protocol.proto.ClientNamenodeProtocolProtos$ClientNamenodeProtocol$2.callBlockingMethod(ClientNamenodeProtocolProtos.java:42612)
> >     at
> >
> org.apache.hadoop.ipc.ProtobufRpcEngine$Server$ProtoBufRpcInvoker.call(ProtobufRpcEngine.java:427)
> >     at org.apache.hadoop.ipc.RPC$Server.call(RPC.java:916)
> >     at org.apache.hadoop.ipc.Server$Handler$1.run(Server.java:1692)
> >     at org.apache.hadoop.ipc.Server$Handler$1.run(Server.java:1688)
> >     at java.security.AccessController.doPrivileged(Native Method)
> >     at javax.security.auth.Subject.doAs(Subject.java:396)
> >     at
> >
> org.apache.hadoop.security.UserGroupInformation.doAs(UserGroupInformation.java:1232)
> >     at org.apache.hadoop.ipc.Server$Handler.run(Server.java:1686)
> >
> >     at sun.reflect.GeneratedConstructorAccessor21.newInstance(Unknown
> > Source)
> >     at
> >
> sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:27)
> >     at java.lang.reflect.Constructor.newInstance(Constructor.java:513)
> >     at
> >
> org.apache.hadoop.ipc.RemoteException.instantiateException(RemoteException.java:90)
> >     at
> >
> org.apache.hadoop.ipc.RemoteException.unwrapRemoteException(RemoteException.java:57)
> >     at org.apache.hadoop.hdfs.DFSClient.rename(DFSClient.java:1237)
> >     at
> >
> org.apache.hadoop.hdfs.DistributedFileSystem.rename(DistributedFileSystem.java:294)
> >     at
> > org.apache.hadoop.hbase.regionserver.StoreFile.rename(StoreFile.java:640)
> >     at
> > org.apache.hadoop.hbase.regionserver.Store.bulkLoadHFile(Store.java:420)
> >     at
> >
> org.apache.hadoop.hbase.regionserver.HRegion.bulkLoadHFiles(HRegion.java:2803)
> >     at
> >
> org.apache.hadoop.hbase.regionserver.HRegionServer.bulkLoadHFiles(HRegionServer.java:2417)
> >     at sun.reflect.GeneratedMethodAccessor21.invoke(Unknown Source)
> >     at
> >
> sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
> >     at java.lang.reflect.Method.invoke(Method.java:597)
> >     at
> >
> org.apache.hadoop.hbase.ipc.WritableRpcEngine$Server.call(WritableRpcEngine.java:364)
> >     at
> >
> org.apache.hadoop.hbase.ipc.HBaseServer$Handler.run(HBaseServer.java:1336)
> >
> > --
> > Thanks & Regards,
> > Anil Gupta
>
>
>
> --
> Harsh J
>



-- 
Thanks & Regards,
Anil Gupta

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