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Posted to commits@cassandra.apache.org by "Jon Meredith (Jira)" <ji...@apache.org> on 2020/06/18 21:52:00 UTC
[jira] [Updated] (CASSANDRA-15766) NoSpamLogger arguments building
objects on hot paths
[ https://issues.apache.org/jira/browse/CASSANDRA-15766?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]
Jon Meredith updated CASSANDRA-15766:
-------------------------------------
Fix Version/s: (was: 4.0-rc)
4.0-beta
> 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
> Priority: Normal
> Fix For: 4.0-beta
>
>
> 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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