Francis Liu created HBASE-15156:
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Summary: Support first assignment of split daughters to non-parent
RS
Key: HBASE-15156
URL: https://issues.apache.org/jira/browse/HBASE-15156
Project: HBase
Issue Type: New Feature
Reporter: Francis Liu
Assignee: Francis Liu
On region split, the region's daughter is always opened by the same region
server hosting the parent region. In some cases this is not ideal:
This feature was mainly needed for favored nodes to allow for more freedom when
selecting favored nodes for daughter regions. ie The daughter doesn't have to
always select the regionserver hosting the split as a favored node which should
allow for better favored node distribution.
Though this feature is actually useful in cases where region splits occur much
more often than the balancer is run. It also is a bit more efficient as the
major compaction that occurs after daughter assignment does not go to waste (ie
cancelled half-way, loss of locality due to move, etc). We actually run it this
way in some of our clusters even without favored nodes enabled. Hence I am
supplying a patch which is independent of favored nodes.
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