Abhishek Singh Chouhan commented on HBASE-17937:

The patch for branch-1 won't apply to branch-1.(0-1), but will apply to 1.2+ 
mostly because of changes in mvcc and seqid as part of HBASE-14465 which are 
not there in the previous ones. I can provide a patch for those branches in 
case we want to patch those too. [~Apache9]

> Memstore size becomes negative in case of expensive postPut/Delete 
> Coprocessor call
> -----------------------------------------------------------------------------------
>                 Key: HBASE-17937
>                 URL: https://issues.apache.org/jira/browse/HBASE-17937
>             Project: HBase
>          Issue Type: Bug
>    Affects Versions: 2.0.0, 1.3.1, 0.98.24
>            Reporter: Abhishek Singh Chouhan
>            Assignee: Abhishek Singh Chouhan
>         Attachments: HBASE-17937.branch-1.001.patch, 
> HBASE-17937.branch-1.002.patch, HBASE-17937.master.001.patch, 
> HBASE-17937.master.002.patch, HBASE-17937.master.002.patch, 
> HBASE-17937.master.003.patch, HBASE-17937.master.003.patch
> We ran into a situation where the memstore size became negative due to 
> expensive postPut/Delete Coprocessor calls in doMiniBatchMutate. We update 
> the memstore size in the finally block of doMiniBatchMutate, however a queued 
> flush can be triggered during the coprocessor calls(if they are taking time 
> eg. index updates) since we have released the locks and advanced mvcc at this 
> point. The flush will turn the memstore size negative since the value 
> subtracted is the actual value flushed from stores. The negative value 
> impacts the future flushes amongst others that depend on memstore size.

This message was sent by Atlassian JIRA

Reply via email to