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From "Anu Engineer (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (HDFS-11580) Ozone: Support asynchronus client API for SCM and containers
Date Tue, 01 Aug 2017 17:45:00 GMT

    [ https://issues.apache.org/jira/browse/HDFS-11580?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16109394#comment-16109394

Anu Engineer commented on HDFS-11580:

[~nandakumar131] Thanks for the comments. I completely agree with your comment.
bq.  default asynchronous and we can make XceiverClient#sendCommand call into XceiverClient#sendCommandAsync(request).get()
which will 

I would like to do that in some later patch since if I do that now, I have to make corresponding
changes in ContainerProtocolCalls, which will make this patch larger and we will we have to
rework changes in ContainerProtocolCalls later. My aim was to illustrate the idea of making
the async patch first class, we need a series of patches on top of this to get all the way
to Corona. So I took the path of leaving the signatures as-is for time being.

> Ozone: Support asynchronus client API for SCM and containers
> ------------------------------------------------------------
>                 Key: HDFS-11580
>                 URL: https://issues.apache.org/jira/browse/HDFS-11580
>             Project: Hadoop HDFS
>          Issue Type: Sub-task
>          Components: ozone
>    Affects Versions: HDFS-7240
>            Reporter: Anu Engineer
>            Assignee: Yiqun Lin
>         Attachments: HDFS-11580-HDFS-7240.001.patch, HDFS-11580-HDFS-7240.002.patch,
HDFS-11580-HDFS-7240.003.patch, HDFS-11580-HDFS-7240.004.patch, HDFS-11580-HDFS-7240.005.patch,
HDFS-11580-HDFS-7240.006.patch, HDFS-11580-HDFS-7240.007.patch, HDFS-11580-HDFS-7240.008.patch,
HDFS-11580-HDFS-7240.009.patch, HDFS-11580-HDFS-7240.010.patch, HDFS-11580-HDFS-7240.011.patch,
> This is an umbrella JIRA that needs to support a set of APIs in Asynchronous form.
> For containers -- or the datanode API currently supports a call {{sendCommand}}. we need
to build proper programming interface and support an async interface.
> There is also a set of SCM API that clients can call, it would be nice to support Async
interface for those too.

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