Ray Mattingly created HBASE-29203:
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Summary: There should be a StorefileSize equivalent to the
TableSkewCost
Key: HBASE-29203
URL: https://issues.apache.org/jira/browse/HBASE-29203
Project: HBase
Issue Type: Bug
Components: Balancer
Affects Versions: 2.7.0
Reporter: Ray Mattingly
Assignee: Ray Mattingly
We don't want to rely on per-table balancing, but we do want tables to be
balanced effectively based on their data size. This is because regions are
variably sized, but 1gb is always 1gb, so, in a well distributed schema, data
size is a better metric for a region's load than just counting every region
identically.
Right now the TableSkewCostFunction is the balancer's mechanism for balancing
each table somewhat independently within a cluster-wide plan, but it only looks
at region counts. We could balance more effectively if we had a
StoreFileTableSkewCost.
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