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https://issues.apache.org/jira/browse/HBASE-5414?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Amitanand Aiyer updated HBASE-5414:
-----------------------------------
Summary: Assign different memstoreTS to different KV's in the same WALEdit
during replay (was: Assign different memstoreTS to different KV's in the same
WALEdit)
> Assign different memstoreTS to different KV's in the same WALEdit during
> replay
> -------------------------------------------------------------------------------
>
> Key: HBASE-5414
> URL: https://issues.apache.org/jira/browse/HBASE-5414
> Project: HBase
> Issue Type: Sub-task
> Components: client, coprocessors, regionserver
> Reporter: Amitanand Aiyer
> Fix For: 0.94.0
>
>
> HBASE-5203 combines all the different Puts/Deletes into one WALEdit. This is
> required to ensure that we persist the atomic mutation in its enterity and not
> in parts.
> When combined into a single WALEdit, we create one big familyMap that is a
> combination
> of all the family maps in the mutations. The KV's in this familyMap have no
> information
> about memstoreTS (it is not yet assigned).
> However, when we apply the mutations to the Memstore (if there are no
> failures) we end up
> incrementing the memstoreTS for each operation.
> This can lead to the client seeing different order of operations -- depending
> on weather or
> not there was a RS crash/restart.
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