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Posted to commits@cassandra.apache.org by "Dave Brosius (JIRA)" <ji...@apache.org> on 2013/05/06 08:26:16 UTC

[jira] [Created] (CASSANDRA-5538) Reduce Empty Map allocations in StorageProxy.sendToHintedEndpoints

Dave Brosius created CASSANDRA-5538:
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             Summary: Reduce Empty Map allocations in StorageProxy.sendToHintedEndpoints
                 Key: CASSANDRA-5538
                 URL: https://issues.apache.org/jira/browse/CASSANDRA-5538
             Project: Cassandra
          Issue Type: Improvement
          Components: Core
    Affects Versions: 2.0
            Reporter: Dave Brosius
            Assignee: Dave Brosius
            Priority: Trivial
             Fix For: 2.0
         Attachments: 5538.txt

StorageProxy.sendToHintedEndpoints allocates HashMaps consistently that are very often not used.

See output: http://pastebin.com/jEaBxz1h

Format is
Type Date SourceLine CollectionSize NumBuckets NumBucketsUsed

The snapshot is taken after the size of the collection hasn't changed for 5 seconds.

Postpone creation of hashmap until you need it.

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