Gabriel Reid created HBASE-7325:
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Summary: Replication reacts slowly on a lightly-loaded cluster
Key: HBASE-7325
URL: https://issues.apache.org/jira/browse/HBASE-7325
Project: HBase
Issue Type: Bug
Components: Replication
Reporter: Gabriel Reid
Priority: Minor
ReplicationSource uses a backing-off algorithm to sleep for an increasing
duration when an error is encountered in the replication run loop. However,
this backing-off is also performed when there is nothing found to replicate in
the HLog.
Assuming default settings (1 second base retry sleep time, and maximum
multiplier of 10), this means that replication takes up to 10 seconds to occur
when there is a break of about 55 seconds without anything being written. As
there is no error condition, and there is apparently no substantial load on the
regionserver in this situation, it would probably make more sense to not back
off in non-error situations.
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