Thiruvel Thirumoolan created HBASE-20546:
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Summary: Improve perf of
RegionLocationFinder.mapHostNameToServerName
Key: HBASE-20546
URL: https://issues.apache.org/jira/browse/HBASE-20546
Project: HBase
Issue Type: Improvement
Affects Versions: 2.0.0, 1.4.4
Reporter: Thiruvel Thirumoolan
Assignee: Thiruvel Thirumoolan
Fix For: 1.5.0, 2.0.1, 1.4.5
RegionLocationFinder.getTopBlockLocations() is called multiple times during
balancer. While profiling on a large table balance, mapHostNameToServerName()
seem to take a lot of time. One of the maps is repeatedly consumed for each
iteration, while we can just initialize it once.
Goes into both branch-1 and branch-2, although patches differ slightly.
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