currently after a snapshotscan is closed the clearchore in hbase gives wranings like the ones below indicating t hat is cannot remove unused links because of permission issues. the links are created with trafion permissions and the cleanerChore runniong with hbase prioveileges is not able to remove them.
As a workaround the bulkunlaod changes the pemsiins on these links so that they can be deleted by the cleanerChore. Alonger term solution may be needed
2015-02-10 21:51:20,259 WARN [master:panoramix-1:60000.archivedHFileCleaner] cleaner.CleanerChore: Error while deleting: hdfs://panoramix-1.openstacklocal:8020/apps/hbase/data/archive/data/default/TRAFODION.SEABASE.TT10/559b81b4e209dc05ed0478ace9ba4e6c/#1/.links-4cb64457269346e6a6ece262e76d1707_SeqId_2_/559b81b4e209dc05ed0478ace9ba4e6c.TRAFODION.SEABASE.TT10
org.apache.hadoop.security.AccessControlException: Permission denied: user=hbase, access=WRITE, inode="/apps/hbase/data/archive/data/default/TRAFODION.SEABASE.TT10/559b81b4e209dc05ed0478ace9ba4e6c/#1/.links-4cb64457269346e6a6ece262e76d1707_SeqId_2_":trafodion:hdfs:drwxr-xr-x:user:trafodion:rwx,group::r-x,default:user::rwx,default:user:trafodion:rwx,default:group::r-x,default:mask::rwx,default:other::r-x
at org.apache.hadoop.hdfs.server.namenode.FSPermissionChecker.checkAccessAcl(FSPermissionChecker.java:345)
at org.apache.hadoop.hdfs.server.namenode.FSPermissionChecker.check(FSPermissionChecker.java:247)
at org.apache.hadoop.hdfs.server.namenode.FSPermissionChecker.check(FSPermissionChecker.java:232)
at org.apache.hadoop.hdfs.server.namenode.FSPermissionChecker.checkPermission(FSPermissionChecker.java:179)
at org.apache.hadoop.hdfs.server.namenode.FSNamesystem.checkPermission(FSNamesystem.java:5525)
at org.apache.hadoop.hdfs.server.namenode.FSNamesystem.deleteInternal(FSNamesystem.java:3366)
at org.apache.hadoop.hdfs.server.namenode.FSNamesystem.deleteInt(FSNamesystem.java:3320)
at org.apache.hadoop.hdfs.server.namenode.FSNamesystem.delete(FSNamesystem.java:3304)
at org.apache.hadoop.hdfs.server.namenode.NameNodeRpcServer.delete(NameNodeRpcServer.java:733)
at org.apache.hadoop.hdfs.protocolPB.ClientNamenodeProtocolServerSideTranslatorPB.delete(ClientNamenodeProtocolServerSideTranslatorPB.java:547)
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:928)
at org.apache.hadoop.ipc.Server$Handler$1.run(Server.java:2013)
at org.apache.hadoop.ipc.Server$Handler$1.run(Server.java:2009)
at java.security.AccessController.doPrivileged(Native Method)
at javax.security.auth.Subject.doAs(Subject.java:415)
at org.apache.hadoop.security.UserGroupInformation.doAs(UserGroupInformation.java:1594)
at org.apache.hadoop.ipc.Server$Handler.run(Server.java:2007)
at sun.reflect.NativeConstructorAccessorImpl.newInstance0(Native Method)
at sun.reflect.NativeConstructorAccessorImpl.newInstance(NativeConstructorAccessorImpl.java:57)
at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45)
at java.lang.reflect.Constructor.newInstance(Constructor.java:526)
at org.apache.hadoop.ipc.RemoteException.instantiateException(RemoteException.java:106)
at org.apache.hadoop.ipc.RemoteException.unwrapRemoteException(RemoteException.java:73)
at org.apache.hadoop.hdfs.DFSClient.delete(DFSClient.java:1705)
at org.apache.hadoop.hdfs.DistributedFileSystem$11.doCall(DistributedFileSystem.java:595)
at org.apache.hadoop.hdfs.DistributedFileSystem$11.doCall(DistributedFileSystem.java:591)
at org.apache.hadoop.fs.FileSystemLinkResolver.resolve(FileSystemLinkResolver.java:81)
at org.apache.hadoop.hdfs.DistributedFileSystem.delete(DistributedFileSystem.java:591)
at org.apache.hadoop.hbase.master.cleaner.CleanerChore.checkAndDeleteFiles(CleanerChore.java:256)
at org.apache.hadoop.hbase.master.cleaner.CleanerChore.checkAndDeleteEntries(CleanerChore.java:157)
at org.apache.hadoop.hbase.master.cleaner.CleanerChore.checkAndDeleteDirectory(CleanerChore.java:180)
at org.apache.hadoop.hbase.master.cleaner.CleanerChore.checkAndDeleteEntries(CleanerChore.java:149)
at org.apache.hadoop.hbase.master.cleaner.CleanerChore.checkAndDeleteDirectory(CleanerChore.java:180)
at org.apache.hadoop.hbase.master.cleaner.CleanerChore.checkAndDeleteEntries(CleanerChore.java:149)
at org.apache.hadoop.hbase.master.cleaner.CleanerChore.checkAndDeleteDirectory(CleanerChore.java:180)
at org.apache.hadoop.hbase.master.cleaner.CleanerChore.checkAndDeleteEntries(CleanerChore.java:149)
at org.apache.hadoop.hbase.master.cleaner.CleanerChore.checkAndDeleteDirectory(CleanerChore.java:180)
at org.apache.hadoop.hbase.master.cleaner.CleanerChore.checkAndDeleteEntries(CleanerChore.java:149)
at org.apache.hadoop.hbase.master.cleaner.CleanerChore.checkAndDeleteDirectory(CleanerChore.java:180)
at org.apache.hadoop.hbase.master.cleaner.CleanerChore.checkAndDeleteEntries(CleanerChore.java:149)
at org.apache.hadoop.hbase.master.cleaner.CleanerChore.checkAndDeleteDirectory(CleanerChore.java:180)
at org.apache.hadoop.hbase.master.cleaner.CleanerChore.checkAndDeleteEntries(CleanerChore.java:149)
at org.apache.hadoop.hbase.master.cleaner.CleanerChore.chore(CleanerChore.java:124)
at org.apache.hadoop.hbase.Chore.run(Chore.java:80)
