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Posted to commits@cassandra.apache.org by "Jon Meredith (Jira)" <ji...@apache.org> on 2020/04/28 13:55:00 UTC

[jira] [Created] (CASSANDRA-15766) NoSpamLogger arguments building objects on hot paths

Jon Meredith created CASSANDRA-15766:
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             Summary: NoSpamLogger arguments building objects on hot paths
                 Key: CASSANDRA-15766
                 URL: https://issues.apache.org/jira/browse/CASSANDRA-15766
             Project: Cassandra
          Issue Type: Bug
          Components: Observability/Logging
            Reporter: Jon Meredith
            Assignee: Jon Meredith


NoSpamLogger is used in hot logging paths to prevent logs being overrun.  For that to be most effective the arguments to the logger need to be cheap to construct.  During the internode messaging refactor CASSANDRA-15066, performance changes to BufferPool for CASSANDRA-14416
were accidentally reverted in the merge up from 3.11.

Reviewing other uses since, it looks like there are a few places where the arguments require some form of String building.

org.apache.cassandra.net.InboundSink#accept
org.apache.cassandra.net.InboundMessageHandler#processCorruptFrame
org.apache.cassandra.net.InboundMessageHandler.LargeMessage#deserialize
org.apache.cassandra.net.OutboundConnection#onOverloaded
org.apache.cassandra.utils.memory.BufferPool.GlobalPool#allocateMoreChunks

Formatting arguments should either be precomputed, or if expensive they should be computed after the decision on whether to noSpamLog has been made.



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