Details
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Bug
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Status: Open
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Normal
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Resolution: Unresolved
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None
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Degradation - Performance Bug/Regression
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Normal
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Normal
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User Report
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All
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None
Description
After upgrading Cassandra from 3.11.3 to 3.11.9, Cassandra read latency 99% increased significantly. Getting back to 3.11.3 immediately fixed the issue.
I have observed "SStable reads" increases after upgrading to 3.11.9.
The same behavior was observed by some other users: https://www.mail-archive.com/user@cassandra.apache.org/msg61247.html
According to Paulo Motta's comment, this behavior may be caused by https://issues.apache.org/jira/browse/CASSANDRA-15690 which was introduced on 3.11.7 and removed an optimization that may cause a correctness issue when there are partition deletions.