Aleksey Yeschenko created CASSANDRA-13913:
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Summary: Be more optimistic when fetching more rows for SRP
Key: CASSANDRA-13913
URL: https://issues.apache.org/jira/browse/CASSANDRA-13913
Project: Cassandra
Issue Type: Improvement
Reporter: Aleksey Yeschenko
Assignee: Aleksey Yeschenko
Fix For: 3.0.15, 3.11.1
CASSANDRA-13794 fixed the issue with fetching at most 1 extra row for SRP by
instead fetching the per partition limit (if set) or global limit (if not). As
noticed, however, it might be a bit too pessimistic, and double the load even
when are only missing an extra row.
Before 3.0.15 with that change is released, I'd like to make a small change, so
nobody gets surprised by sudden load increases. We'd start with {{2 * (limit -
counted)}} and if that's not enough, exponentially increase # of extra rows
fetched until we hit {{limit}}.
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