Lars Hofhansl created HBASE-9365:
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Summary: Limit major compactions to off peak hours
Key: HBASE-9365
URL: https://issues.apache.org/jira/browse/HBASE-9365
Project: HBase
Issue Type: Bug
Reporter: Lars Hofhansl
We already have off peak hours (where we set a more aggressive compaction
ratio) and periodic major compactions.
It would be nice if we could limit this to off peak hours as well.
A major compaction can be triggered in three ways:
# a periodic chore checking every ~3h (10.000.000ms) by default
# a minor compaction promoted to major because the last major compaction was
too long ago
# a minor compaction promoted to major (at the HStore level), because it
touched all HFiles anyway
For case #1 and #2 we could could optionally return false from
Store.isMajorCompaction(...) when we're not in the off peak window. Would have
a new config option to enforce that only optionally.
In case #3 we're compacting all files anyway, so not need to interfere with
that.
Thoughts?
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