[
https://issues.apache.org/jira/browse/HBASE-12988?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14608676#comment-14608676
]
Lars Hofhansl edited comment on HBASE-12988 at 6/30/15 5:11 PM:
----------------------------------------------------------------
The WALKey (formerly HLogKey) also has logSeqNum and writeTime. Right now the
sink only uses the writeTime to update ageOfLastAppliedOp.
If ever we want to use them - for ordering or other guarantees - we cannot
disentangle them from the WALEdits; i.e. we cannot regroup Cell between
WALEdits.
So in the end I think that we do the grouping by table or by region (as I have
done here)... or don't do it at all.
[~apurtell], [~hongyu.bi], comments?
was (Author: lhofhansl):
The WALKey (formerly HLogKey) also has logSeqNum and writeTime. Right now the
sink doesn't use those.
_But_ if ever we want to use them - for ordering or other guarantees - we
cannot disentangle them from the WALEdits; i.e. we cannot regroup Cell between
WALEdits.
So in the end I think that we do the grouping by table or by region (as I have
done here)... or don't do it at all.
[~apurtell], [~hongyu.bi], comments?
> [Replication]Parallel apply edits on row-level
> ----------------------------------------------
>
> Key: HBASE-12988
> URL: https://issues.apache.org/jira/browse/HBASE-12988
> Project: HBase
> Issue Type: Improvement
> Components: Replication
> Reporter: hongyu bi
> Assignee: Lars Hofhansl
> Attachments: 12988-v2.txt, 12988-v3.txt, 12988.txt,
> HBASE-12988-0.98.patch, ParallelReplication-v2.txt
>
>
> we can apply edits to slave cluster in parallel on table-level to speed up
> replication .
> update : per conversation blow , it's better to apply edits on row-level in
> parallel
--
This message was sent by Atlassian JIRA
(v6.3.4#6332)
