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Mike Drob commented on HBASE-19980: ----------------------------------- Can you add a test for mob regions too? Some of that code moved around and I'm having some trouble following the intent. > NullPointerException when restoring a snapshot after splitting a region > ----------------------------------------------------------------------- > > Key: HBASE-19980 > URL: https://issues.apache.org/jira/browse/HBASE-19980 > Project: HBase > Issue Type: Bug > Components: snapshots > Reporter: Toshihiro Suzuki > Assignee: Toshihiro Suzuki > Priority: Major > Attachments: HBASE-19980-UT.patch, HBASE-19980.master.001.patch, > HBASE-19980.master.002.patch > > > Investigating HBASE-19893, I'm facing the following NullPointerException when > restoring a snapshot after splitting a region: > {code} > 2018-02-13 01:59:56,033 ERROR [PEWorker-1] > procedure.RestoreSnapshotProcedure(403): restore snapshot={ > ss=snaptb1-1518454780480 > table=testRestoreSnapshotAfterSplittingRegions-1518454780480 type=FLUSH } > failed in on-disk restore. Try re-running the restore command. > java.io.IOException > at > org.apache.hadoop.hbase.util.ModifyRegionUtils.editRegions(ModifyRegionUtils.java:222) > at > org.apache.hadoop.hbase.snapshot.RestoreSnapshotHelper.restoreHdfsRegions(RestoreSnapshotHelper.java:424) > at > org.apache.hadoop.hbase.snapshot.RestoreSnapshotHelper.restoreHdfsRegions(RestoreSnapshotHelper.java:227) > at > org.apache.hadoop.hbase.snapshot.RestoreSnapshotHelper.restoreHdfsRegions(RestoreSnapshotHelper.java:177) > at > org.apache.hadoop.hbase.master.procedure.RestoreSnapshotProcedure.restoreSnapshot(RestoreSnapshotProcedure.java:395) > at > org.apache.hadoop.hbase.master.procedure.RestoreSnapshotProcedure.executeFromState(RestoreSnapshotProcedure.java:143) > at > org.apache.hadoop.hbase.master.procedure.RestoreSnapshotProcedure.executeFromState(RestoreSnapshotProcedure.java:58) > at > org.apache.hadoop.hbase.procedure2.StateMachineProcedure.execute(StateMachineProcedure.java:180) > at > org.apache.hadoop.hbase.procedure2.Procedure.doExecute(Procedure.java:845) > at > org.apache.hadoop.hbase.procedure2.ProcedureExecutor.execProcedure(ProcedureExecutor.java:1455) > at > org.apache.hadoop.hbase.procedure2.ProcedureExecutor.executeProcedure(ProcedureExecutor.java:1224) > at > org.apache.hadoop.hbase.procedure2.ProcedureExecutor.access$800(ProcedureExecutor.java:78) > at > org.apache.hadoop.hbase.procedure2.ProcedureExecutor$WorkerThread.run(ProcedureExecutor.java:1734) > Caused by: java.lang.NullPointerException > at > org.apache.hadoop.hbase.snapshot.RestoreSnapshotHelper.restoreReferenceFile(RestoreSnapshotHelper.java:751) > at > org.apache.hadoop.hbase.snapshot.RestoreSnapshotHelper.restoreStoreFile(RestoreSnapshotHelper.java:675) > at > org.apache.hadoop.hbase.snapshot.RestoreSnapshotHelper.restoreRegion(RestoreSnapshotHelper.java:521) > at > org.apache.hadoop.hbase.snapshot.RestoreSnapshotHelper.restoreRegion(RestoreSnapshotHelper.java:464) > at > org.apache.hadoop.hbase.snapshot.RestoreSnapshotHelper.access$300(RestoreSnapshotHelper.java:116) > at > org.apache.hadoop.hbase.snapshot.RestoreSnapshotHelper$2.editRegion(RestoreSnapshotHelper.java:427) > at > org.apache.hadoop.hbase.util.ModifyRegionUtils$2.call(ModifyRegionUtils.java:209) > at > org.apache.hadoop.hbase.util.ModifyRegionUtils$2.call(ModifyRegionUtils.java:206) > at java.util.concurrent.FutureTask.run(FutureTask.java:266) > at > java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511) > at java.util.concurrent.FutureTask.run(FutureTask.java:266) > at > java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1142) > at > java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617) > at java.lang.Thread.run(Thread.java:745) > {code} -- This message was sent by Atlassian JIRA (v7.6.3#76005)