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https://issues.apache.org/jira/browse/ZOOKEEPER-639?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Benjamin Reed updated ZOOKEEPER-639:
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Attachment: ZOOKEEPER-639.patch
> Performance improvements for ZooKeeper
> --------------------------------------
>
> Key: ZOOKEEPER-639
> URL: https://issues.apache.org/jira/browse/ZOOKEEPER-639
> Project: Zookeeper
> Issue Type: Improvement
> Components: server
> Reporter: Benjamin Reed
> Attachments: ZOOKEEPER-639.patch
>
>
> here are some more improvements to Zab. the patch is a bit stale, but i don't
> want to lose track of it. there are two big improvements:
> 1) transaction logs are reused. this saves time over growing the log files
> and if you preallocate a bunch of log files on an empty partition, you will
> see a nice performance boost
> 2) acks and commits are always sent in order, so if there is a bunch to send,
> they will get merged into a single ack or commit.
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