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https://issues.apache.org/jira/browse/ZOOKEEPER-2870?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Michael Han resolved ZOOKEEPER-2870.
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Resolution: Fixed
Fix Version/s: 3.5.4
3.6.0
3.4.11
Issue resolved by pull request 331
[https://github.com/apache/zookeeper/pull/331]
> Improve the efficiency of AtomicFileOutputStream
> ------------------------------------------------
>
> Key: ZOOKEEPER-2870
> URL: https://issues.apache.org/jira/browse/ZOOKEEPER-2870
> Project: ZooKeeper
> Issue Type: Improvement
> Components: server
> Affects Versions: 3.4.10, 3.5.3, 3.6.0
> Reporter: Fangmin Lv
> Assignee: Fangmin Lv
> Fix For: 3.4.11, 3.6.0, 3.5.4
>
>
> The AtomicFileOutputStream extends from FilterOutputStream, where the write
> function writes data to underlying stream byte by byte:
> https://searchcode.com/codesearch/view/17990706/, which is very inefficient.
> Currently, we only this this class to write the dynamic config, because it's
> quite small it won't be a big problem. But in the future we may want to use
> this class to write the snapshot file, which will take much longer time,
> tested inside, writing 600MB snapshot will take more than 10 minutes, while
> using FileOutputStream directly only takes 6s.
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