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From Íñigo Goiri (JIRA) <j...@apache.org>
Subject [jira] [Commented] (HDFS-14710) RBF: Improve some RPC performances
Date Fri, 09 Aug 2019 17:52:00 GMT

    [ https://issues.apache.org/jira/browse/HDFS-14710?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16904079#comment-16904079

Íñigo Goiri commented on HDFS-14710:

Thanks [~xuzq_zander] for working on this.
* We should create an invokeSingle method that uses the block but also does the casting (we
have another invokeSingle that does it {{public <T> T invokeSingle(final String nsId,
RemoteMethod method, Class<T> clazz)}}.
* We need some unit tests which ideally would check the number of calls to asses the improvement.

> RBF: Improve some RPC performances
> ----------------------------------
>                 Key: HDFS-14710
>                 URL: https://issues.apache.org/jira/browse/HDFS-14710
>             Project: Hadoop HDFS
>          Issue Type: Improvement
>          Components: rbf
>            Reporter: xuzq
>            Assignee: xuzq
>            Priority: Minor
>         Attachments: HDFS-14710-trunk-001.patch
> We can improve some RPC performance if the extendedBlock is not null.
> Such as addBlock, getAdditionalDatanode and complete.
> Since HDFS encourages user to write large files, so the extendedBlock is not null in
most case.
> In the scenario of Multiple Destination and large file, the effect is more obvious.

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