Liyin Tang created HBASE-10343:
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             Summary: 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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