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https://issues.apache.org/jira/browse/HBASE-10343?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14009253#comment-14009253
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binlijin commented on HBASE-10343:
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hi liyin, can we listener the region open event in zk, so we can know the
region open event and coordinate the hlog async replication to guarantee the
in-order delivery?
> Write the last sequence id into the HLog during the RegionOpen time
> -------------------------------------------------------------------
>
> Key: HBASE-10343
> URL: https://issues.apache.org/jira/browse/HBASE-10343
> Project: HBase
> Issue Type: Improvement
> Reporter: Liyin Tang
>
> HLog based async replication has a challenging to guarantee the in-order
> delivery when the Region is moving from one HLog stream to another HLog
> stream.
> One approach is to keep the last_sequence_id in the new HLog stream when
> opening the Region. So the replication framework is able to catch upto the
> last_sequence_id from the previous HLog stream, before replicating any new
> transactions through the new HLog stream.
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