Bryan Beaudreault created HBASE-26814:
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Summary: Default StoreHotnessProtector to off, with logs to guide
when to turn it on
Key: HBASE-26814
URL: https://issues.apache.org/jira/browse/HBASE-26814
Project: HBase
Issue Type: Improvement
Reporter: Bryan Beaudreault
As discussed in HBASE-26522 and somewhat in HBASE-26575, StoreHotnessProtector
is too conservative. One can easily trigger RegionTooBusyException on an
otherwise idle regionserver with relatively small amount of traffic. The idea
behind this protection is good, but it needs to take into account current load
in order to warrant being enabled by default.
Until it's improved as such, we should change it to default off. One thing we
can do to help drive usage would be to add warning logs when it would have
triggered. Operators who are diagnosing performance issues will naturally look
at the logs and see indication of a potential tool for mitigation.
cc [[email protected]]
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