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Posted to issues@ratis.apache.org by "Tsz Wo Nicholas Sze (JIRA)" <ji...@apache.org> on 2019/06/14 22:27:00 UTC

[jira] [Updated] (RATIS-589) Eliminate buffer copying in SegmentedRaftLogOutputStream

     [ https://issues.apache.org/jira/browse/RATIS-589?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Tsz Wo Nicholas Sze updated RATIS-589:
--------------------------------------
    Attachment: r589_20190614.patch

> Eliminate buffer copying in SegmentedRaftLogOutputStream
> --------------------------------------------------------
>
>                 Key: RATIS-589
>                 URL: https://issues.apache.org/jira/browse/RATIS-589
>             Project: Ratis
>          Issue Type: Improvement
>          Components: server
>            Reporter: Tsz Wo Nicholas Sze
>            Assignee: Tsz Wo Nicholas Sze
>            Priority: Major
>         Attachments: r589_20190614.patch
>
>
> In SegmentedRaftLogOutputStream.write(LogEntryProto entry), the entry is first converted to a byte array and then write to BufferedWriteChannel.  In BufferedWriteChannel, it copies the byte array to a ByteBuffer.  The copying should be eliminated.



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