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https://issues.apache.org/jira/browse/HBASE-22608?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17721240#comment-17721240
 ] 

Huibo Peng commented on HBASE-22608:
------------------------------------

Does anyone work on this issue now, we're facing the same problem. [~openinx] 
[~ram_krish] 

> MVCC's writeEntry didn't complete and make MVCC stuck
> -----------------------------------------------------
>
>                 Key: HBASE-22608
>                 URL: https://issues.apache.org/jira/browse/HBASE-22608
>             Project: HBase
>          Issue Type: Bug
>          Components: in-memory-compaction
>            Reporter: Guanghao Zhang
>            Assignee: Zheng Hu
>            Priority: Critical
>
> {code:java}
> 2019-06-20,05:03:44,917 ERROR 
> [RpcServer.default.RWQ.Fifo.write.handler=61,queue=1,port=22600] 
> org.apache.hadoop.hbase.regionserver.HRegion: Asked to modify this region's 
> (xxxxxx,,1560481375170.10b01c12d58ce75c9aaf1ac15cc2a7f3.) memStoreSizing to a 
> negative value which is incorrect. Current memStoreSizing=-1686222, 
> delta=1489930
> java.lang.Exception
> at 
> org.apache.hadoop.hbase.regionserver.HRegion.checkNegativeMemStoreDataSize(HRegion.java:1317)
> at 
> org.apache.hadoop.hbase.regionserver.HRegion.incMemStoreSize(HRegion.java:1295)
> at 
> org.apache.hadoop.hbase.regionserver.HRegion$BatchOperation.writeMiniBatchOperationsToMemStore(HRegion.java:3316)
> at 
> org.apache.hadoop.hbase.regionserver.HRegion$MutationBatchOperation.writeMiniBatchOperationsToMemStore(HRegion.java:3821)
> at 
> org.apache.hadoop.hbase.regionserver.HRegion.doMiniBatchMutate(HRegion.java:4248)
> at org.apache.hadoop.hbase.regionserver.HRegion.batchMutate(HRegion.java:4179)
> at org.apache.hadoop.hbase.regionserver.HRegion.batchMutate(HRegion.java:4109)
> at 
> org.apache.hadoop.hbase.regionserver.RSRpcServices.doBatchOp(RSRpcServices.java:1059)
> at 
> org.apache.hadoop.hbase.regionserver.RSRpcServices.doNonAtomicBatchOp(RSRpcServices.java:991)
> at 
> org.apache.hadoop.hbase.regionserver.RSRpcServices.doNonAtomicRegionMutation(RSRpcServices.java:954)
> at 
> org.apache.hadoop.hbase.regionserver.RSRpcServices.multi(RSRpcServices.java:2833)
> at 
> org.apache.hadoop.hbase.shaded.protobuf.generated.ClientProtos$ClientService$2.callBlockingMethod(ClientProtos.java:42014)
> at org.apache.hadoop.hbase.ipc.RpcServer.call(RpcServer.java:413)
> at org.apache.hadoop.hbase.ipc.CallRunner.run(CallRunner.java:132)
> at org.apache.hadoop.hbase.ipc.RpcExecutor$Handler.run(RpcExecutor.java:338)
> at org.apache.hadoop.hbase.ipc.RpcExecutor$Handler.run(RpcExecutor.java:318)
> {code}
> See 
> [https://github.com/apache/hbase/blob/master/hbase-server/src/main/java/org/apache/hadoop/hbase/regionserver/HRegion.java#L3728]
> {code:java}
> @Override
> public WriteEntry writeMiniBatchOperationsToMemStore(
>     final MiniBatchOperationInProgress<Mutation> miniBatchOp, @Nullable 
> WriteEntry writeEntry)
>     throws IOException {
>   if (writeEntry == null) {
>     writeEntry = region.mvcc.begin();
>   }
>   super.writeMiniBatchOperationsToMemStore(miniBatchOp, 
> writeEntry.getWriteNumber());
>   return writeEntry;
> }
> {code}
> super.writeMiniBatchOperationsToMemStore throw a exception and the new 
> writeEntry cannot be complete and make the MVCC stuck.
>  
> And we meet this problem when enable in-memory compaction. But that should be 
> another issue and need to dig more.



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