Lars Hofhansl created PHOENIX-5494:
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Summary: Batched, mutable Index updates are unnecessarily
Key: PHOENIX-5494
URL: https://issues.apache.org/jira/browse/PHOENIX-5494
Project: Phoenix
Issue Type: Improvement
Reporter: Lars Hofhansl
I just noticed that index updates on mutable tables retrieve their deletes (to
invalidate the old index entry) one-by-one.
For batches, this can be *the* major time spent during an index update. The
cost is mostly incured by the repeated setup (and seeking) of the new region
scanner (for each row).
We can instead do a skip scan and get all updates in a single scan per region.
(Logically that is simple, but it will require some refactoring)
I won't be getting to this, but recording it here in case someone feels
inclined.
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