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From "Siddharth Seth (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (HADOOP-13057) Async IPC server support
Date Mon, 25 Apr 2016 04:58:12 GMT

    [ https://issues.apache.org/jira/browse/HADOOP-13057?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15255896#comment-15255896

Siddharth Seth commented on HADOOP-13057:

HADOOP-11552 targets the same.

> Async IPC server support
> ------------------------
>                 Key: HADOOP-13057
>                 URL: https://issues.apache.org/jira/browse/HADOOP-13057
>             Project: Hadoop Common
>          Issue Type: Improvement
>          Components: ipc
>    Affects Versions: 2.6.0
>            Reporter: He Tianyi
> On some application, server may run out of handlers when performing many blocking I/O
operations during processing of each call (e.g. calling another service, etc.). A viable solution
is increasing number of handlers. 
> But this faces the problem that large amount of threads will consume much memory (stack,
etc.), and performance issues either.
> After HADOOP-12909, work on asynchronization has been done on caller-side. This is a
similar proposal on server-side.
> Suggesting the ability to handle requests asynchronously.
> For example, in such server, calls may return a Future object instead of immediate value.
Then sends response to client in {{onSuccess}} or {{onFailed}} callbacks.

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