Incremental backup action failed with NPE when table in full backup is deleted in between

hbase@cluster_name:~$ hbase backup create incremental hdfs://cluster-name:8020/user/hbase "table_02uvzkggro"

2016-06-15 06:38:28,605 INFO  [main] util.BackupClientUtil: Using existing backup root dir: hdfs://cluster-name:8020/user/hbase
2016-06-15 06:38:30,483 ERROR [main] util.AbstractHBaseTool: Error running command-line tool
org.apache.hadoop.ipc.RemoteException(java.lang.NullPointerException): 
at org.apache.hadoop.hbase.backup.master.FullTableBackupProcedure.cleanupTargetDir(FullTableBackupProcedure.java:198)
at org.apache.hadoop.hbase.backup.master.FullTableBackupProcedure.failBackup(FullTableBackupProcedure.java:276)
at org.apache.hadoop.hbase.backup.master.IncrementalTableBackupProcedure.executeFromState(IncrementalTableBackupProcedure.java:186)
at org.apache.hadoop.hbase.backup.master.IncrementalTableBackupProcedure.executeFromState(IncrementalTableBackupProcedure.java:54)
at org.apache.hadoop.hbase.procedure2.StateMachineProcedure.execute(StateMachineProcedure.java:107)
at org.apache.hadoop.hbase.procedure2.Procedure.doExecute(Procedure.java:443)
at org.apache.hadoop.hbase.procedure2.ProcedureExecutor.execProcedure(ProcedureExecutor.java:934)
at org.apache.hadoop.hbase.procedure2.ProcedureExecutor.execLoop(ProcedureExecutor.java:736)
at org.apache.hadoop.hbase.procedure2.ProcedureExecutor.execLoop(ProcedureExecutor.java:689)
at org.apache.hadoop.hbase.procedure2.ProcedureExecutor.access$200(ProcedureExecutor.java:73)
at org.apache.hadoop.hbase.procedure2.ProcedureExecutor$1.run(ProcedureExecutor.java:416)

2016-06-15 06:38:29,875 ERROR [ProcedureExecutorThread-3] master.FullTableBackupProcedure: Unexpected exception in incremental-backup: incremental copy backup_1465972709112org.apache.hadoop.hbase.TableInfoMissingException: No table descriptor file under hdfs://cluster-name:8020/apps/hbase/data/data/default/table_pjtxpp3r74
org.apache.hadoop.hbase.backup.impl.BackupException: org.apache.hadoop.hbase.TableInfoMissingException: No table descriptor file under hdfs://cluster-name:8020/apps/hbase/data/data/default/table_pjtxpp3r74
        at org.apache.hadoop.hbase.backup.util.BackupServerUtil.copyTableRegionInfo(BackupServerUtil.java:196)
        at org.apache.hadoop.hbase.backup.master.IncrementalTableBackupProcedure.executeFromState(IncrementalTableBackupProcedure.java:178)
        at org.apache.hadoop.hbase.backup.master.IncrementalTableBackupProcedure.executeFromState(IncrementalTableBackupProcedure.java:54)
        at org.apache.hadoop.hbase.procedure2.StateMachineProcedure.execute(StateMachineProcedure.java:107)
        at org.apache.hadoop.hbase.procedure2.Procedure.doExecute(Procedure.java:443)
        at org.apache.hadoop.hbase.procedure2.ProcedureExecutor.execProcedure(ProcedureExecutor.java:934)
        at org.apache.hadoop.hbase.procedure2.ProcedureExecutor.execLoop(ProcedureExecutor.java:736)
        at org.apache.hadoop.hbase.procedure2.ProcedureExecutor.execLoop(ProcedureExecutor.java:689)
        at org.apache.hadoop.hbase.procedure2.ProcedureExecutor.access$200(ProcedureExecutor.java:73)
        at org.apache.hadoop.hbase.procedure2.ProcedureExecutor$1.run(ProcedureExecutor.java:416)
Caused by: org.apache.hadoop.hbase.TableInfoMissingException: No table descriptor file under hdfs://cluster-name:8020/apps/hbase/data/data/default/table_pjtxpp3r74
        at org.apache.hadoop.hbase.util.FSTableDescriptors.getTableDescriptorFromFs(FSTableDescriptors.java:509)
        at org.apache.hadoop.hbase.util.FSTableDescriptors.getTableDescriptorFromFs(FSTableDescriptors.java:496)
        at org.apache.hadoop.hbase.util.FSTableDescriptors.getTableDescriptorFromFs(FSTableDescriptors.java:476)
        at org.apache.hadoop.hbase.backup.util.BackupServerUtil.copyTableRegionInfo(BackupServerUtil.java:172)
        ... 9 more
2016-06-15 06:38:29,875 INFO  [ProcedureExecutorThread-3-EventThread] zookeeper.ClientCnxn: EventThread shut down
2016-06-15 06:38:29,875 ERROR [ProcedureExecutorThread-3] master.FullTableBackupProcedure: BackupId=backup_1465972709112,startts=1465972709342,failedts=1465972709875,failedphase=null,failedmessage=org.apache.hadoop.hbase.TableInfoMissingException: No table descriptor file under hdfs://cluster-name:8020/apps/hbase/data/data/default/table_pjtxpp3r74
2016-06-15 06:38:29,884 ERROR [ProcedureExecutorThread-3] procedure2.ProcedureExecutor: CODE-BUG: Uncatched runtime exception for procedure: IncrementalTableBackupProcedure (targetRootDir=hdfs://cluster-name:8020/user/hbase) id=100 state=FINISHED
java.lang.NullPointerException
        at org.apache.hadoop.hbase.backup.master.FullTableBackupProcedure.cleanupTargetDir(FullTableBackupProcedure.java:198)
        at org.apache.hadoop.hbase.backup.master.FullTableBackupProcedure.failBackup(FullTableBackupProcedure.java:276)
        at org.apache.hadoop.hbase.backup.master.IncrementalTableBackupProcedure.executeFromState(IncrementalTableBackupProcedure.java:186)
        at org.apache.hadoop.hbase.backup.master.IncrementalTableBackupProcedure.executeFromState(IncrementalTableBackupProcedure.java:54)
        at org.apache.hadoop.hbase.procedure2.StateMachineProcedure.execute(StateMachineProcedure.java:107)
        at org.apache.hadoop.hbase.procedure2.Procedure.doExecute(Procedure.java:443)
        at org.apache.hadoop.hbase.procedure2.ProcedureExecutor.execProcedure(ProcedureExecutor.java:934)
        at org.apache.hadoop.hbase.procedure2.ProcedureExecutor.execLoop(ProcedureExecutor.java:736)
        at org.apache.hadoop.hbase.procedure2.ProcedureExecutor.execLoop(ProcedureExecutor.java:689)
        at org.apache.hadoop.hbase.procedure2.ProcedureExecutor.access$200(ProcedureExecutor.java:73)
        at org.apache.hadoop.hbase.procedure2.ProcedureExecutor$1.run(ProcedureExecutor.java:416)