Optimize changed readers notification to only update what has changed rather
than rebuild entire KV heap
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Key: HBASE-1530
URL: https://issues.apache.org/jira/browse/HBASE-1530
Project: Hadoop HBase
Issue Type: Improvement
Components: regionserver
Affects Versions: 0.20.0
Reporter: Jonathan Gray
Fix For: 0.20.1
As discussed in HBASE-1207 and to build on what was implemented in HBASE-1503,
we should modify the existing KeyValueHeap in place by reusing any open
scanners possible.
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