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https://issues.apache.org/jira/browse/CASSANDRA-5538?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Jonathan Ellis updated CASSANDRA-5538:
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Attachment: 5538-2.txt
2nd patch to send dc-local replicas inline instead of putting them in a Map.
(Note that I ninja-committed 62f429337caf0aa83b68720a5904e8527b840c80 ahead of
this, might want to review that too. :)
Reduce Empty Map allocations in StorageProxy.sendToHintedEndpoints
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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: 5538-2.txt, 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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