joshelser opened a new pull request #2193:
URL: https://github.com/apache/hbase/pull/2193
Testing done:
```
create 'j', 'f'
add_peer '1', ENDPOINT_CLASSNAME =>
'org.apache.hadoop.hbase.replication.TestReplicationEndpoint$SleepingReplicationEndpointForTest'
alter 'j', {NAME=>'f', REPLICATION_SCOPE=>1}
(1..10000).each{|y| (1..100).each{|x| put 'j', "#{x}#{y}", 'f:q',
"#{x}#{y}"}; sleep 0.5}
```
And then to observe:
1. set `replication.stats.thread.period.seconds` to `15` in hbase-site.xml
and tail regionserver log
2. `watch -n 15 "curl -s http://mizar.local:16030/jmx | jq '.beans[] |
select(.name == \"Hadoop:service=HBase,name=RegionServer,sub=Replication\") |
.\"source.walReaderEditsBufferUsage\"'"`
Can see the buffer grow. When the puts run out, the buffer eventually drains.
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