hadoop-common-issues mailing list archives

Site index · List index
Message view « Date » · « Thread »
Top « Date » · « Thread »
From "Tsz Wo Nicholas Sze (JIRA)" <j...@apache.org>
Subject [jira] [Comment Edited] (HADOOP-12909) Change ipc.Client to support asynchronous calls
Date Thu, 07 Apr 2016 06:26:25 GMT

    [ https://issues.apache.org/jira/browse/HADOOP-12909?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15229768#comment-15229768
] 

Tsz Wo Nicholas Sze edited comment on HADOOP-12909 at 4/7/16 6:25 AM:
----------------------------------------------------------------------

> ... Actually, there aren't any visibility tags on Client and Server at all: I'd recommend
@Public, @Evolving for the whole class ...

Indeed, Client and Server are currently annotated as @InterfaceAudience.LimitedPrivate and
@InterfaceStability.Evolving by HADOOP-8813.  I think we don't need to change them to public.
 Let's continue the discussion in HADOOP-12969.


was (Author: szetszwo):
> ... Actually, there aren't any visibility tags on Client and Server at all: I'd recommend
@Public, @Evolving for the whole class ...

Indeed Client and Server are current annotate as @InterfaceAudience.LimitedPrivate and @InterfaceStability.Evolving;
see HADOOP-8813.  I think we need to change it to public.  Let's continue the discussion in
HADOOP-12969.

> Change ipc.Client to support asynchronous calls
> -----------------------------------------------
>
>                 Key: HADOOP-12909
>                 URL: https://issues.apache.org/jira/browse/HADOOP-12909
>             Project: Hadoop Common
>          Issue Type: New Feature
>          Components: ipc
>            Reporter: Tsz Wo Nicholas Sze
>            Assignee: Xiaobing Zhou
>         Attachments: HADOOP-12909-HDFS-9924.000.patch, HADOOP-12909-HDFS-9924.001.patch,
HADOOP-12909-HDFS-9924.002.patch, HADOOP-12909-HDFS-9924.003.patch, HADOOP-12909-HDFS-9924.004.patch,
HADOOP-12909-HDFS-9924.005.patch, HADOOP-12909-HDFS-9924.006.patch, HADOOP-12909-HDFS-9924.007.patch,
HADOOP-12909-HDFS-9924.008.patch, HADOOP-12909-HDFS-9924.009.patch
>
>
> In ipc.Client, the underlying mechanism is already supporting asynchronous calls -- the
calls shares a connection, the call requests are sent using a thread pool and the responses
can be out of order.  Indeed, synchronous call is implemented by invoking wait() in the caller
thread in order to wait for the server response.
> In this JIRA, we change ipc.Client to support asynchronous mode.  In asynchronous mode,
it return once the request has been sent out but not wait for the response from the server.



--
This message was sent by Atlassian JIRA
(v6.3.4#6332)

Mime
View raw message