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https://issues.apache.org/jira/browse/HBASE-24984?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17383436#comment-17383436
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Gaurav Kanade commented on HBASE-24984:
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Hi [~apurtell] - thx for your feedback. I believe as mentioned in further
comments there rpc release and wal release could happen at same time, hence
sync mechanism is needed and atomicinteger achieves that. Plz let me know if
any further concerns!
> WAL corruption due to early DBBs re-use when Durability.ASYNC_WAL is used
> with multi operation
> ----------------------------------------------------------------------------------------------
>
> Key: HBASE-24984
> URL: https://issues.apache.org/jira/browse/HBASE-24984
> Project: HBase
> Issue Type: Bug
> Components: rpc, wal
> Affects Versions: 2.1.6
> Reporter: Liu Junhong
> Assignee: Gaurav Kanade
> Priority: Critical
> Fix For: 2.5.0, 2.3.6, 3.0.0-alpha-2, 2.4.5
>
> Attachments:
> 0001-HBASE-24984-WAL-corruption-due-to-early-DBBs-re-use-.patch
>
>
> After bugfix HBASE-22539, When client use BufferedMutator or multiple
> mutation , there will be one RpcCall and mutliple FSWALEntry . At the time
> RpcCall finish and one FSWALEntry call release() , the remain FSWALEntries
> may trigger RuntimeException or segmentation fault .
> We should use RefCnt instead of AtomicInteger for
> org.apache.hadoop.hbase.ipc.ServerCall.reference?
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