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From "Tianying Chang (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (HBASE-17453) add Ping into HBase server for deprecated GetProtocolVersion
Date Wed, 15 Mar 2017 17:52:41 GMT

    [ https://issues.apache.org/jira/browse/HBASE-17453?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15926652#comment-15926652

Tianying Chang commented on HBASE-17453:

[~anoop.hbase] Yes, I agree the input parameter for ping is useless. will remove that. and
thanks for catching included the MasterProtos.java into the package, will remove that also.

[~saint.ack@gmail.com] Our usage is to call from asynchbase client to test the client/server
connection, so I feel it is better to be in Client.proto. But I am fine to put it in Admin.proto
if it can achieve the same goal.  As to coprocessor, that means all the tables in the cluster
has to deploy the noop coprocessor, right? If so, that seems too  much operation overhead.

> add Ping into HBase server for deprecated GetProtocolVersion
> ------------------------------------------------------------
>                 Key: HBASE-17453
>                 URL: https://issues.apache.org/jira/browse/HBASE-17453
>             Project: HBase
>          Issue Type: Improvement
>          Components: regionserver
>    Affects Versions: 1.2.2
>            Reporter: Tianying Chang
>            Assignee: Tianying Chang
>            Priority: Minor
>             Fix For: 2.0.0, 1.2.5
>         Attachments: HBASE-17453-1.2.patch, HBASE-17453-master.patch, HBASE-17453-master-v1.patch
> Our HBase service is hosted in AWS. We saw cases where the connection between the client
(Asynchbase in our case) and server stop working but did not throw any exception, therefore
traffic stuck. So we added a "Ping" feature in AsyncHBase 1.5 by utilizing the GetProtocolVersion()
API provided at RS side, if no traffic for given time, we send the "Ping", if no response
back for "Ping", we assume the connect is bad and reconnect. 
> Now we are upgrading cluster from 94 to 1.2. However, GetProtocolVersion() is deprecated.
To be able to support same detect/reconnect feature, we added Ping() in our internal HBase
1.2 branch, and also patched accordingly in Asynchbase 1.7.
> We would like to open source this feature since it is useful for use case in AWS environment.

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