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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)