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https://issues.apache.org/jira/browse/CASSANDRA-3387?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Jonathan Ellis resolved CASSANDRA-3387.
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Resolution: Fixed
Fix Version/s: 1.0.1
Reviewer: jbellis
Assignee: Yang Yang
committed, thanks!
> unnecessary locking in hint path due to InetAddress.getLocalhost()
> ------------------------------------------------------------------
>
> Key: CASSANDRA-3387
> URL: https://issues.apache.org/jira/browse/CASSANDRA-3387
> Project: Cassandra
> Issue Type: Bug
> Reporter: Yang Yang
> Assignee: Yang Yang
> Priority: Minor
> Fix For: 1.0.1
>
> Attachments: 3387.diff, 3387_v2.diff
>
>
> in tests we found locking contention also due to the following
> Stacks at 01:49:19 PM (uptime 10:54)
> MutationStage:62 [BLOCKED] CPU time: 0:06
> java.net.InetAddress.getLocalHost()
> org.apache.cassandra.utils.UUIDGen.getClockSeqAndNode()
> org.apache.cassandra.utils.UUIDGen.createTimeUUIDBytes(long)
> org.apache.cassandra.utils.UUIDGen.getTimeUUIDBytes()
> org.apache.cassandra.db.RowMutation.hintFor(RowMutation, ByteBuffer)
> org.apache.cassandra.service.StorageProxy$4.run()
> java.lang.Thread.run()
> we can easily change every getLocalHost() call to use a cached value
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