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From "Tianying Chang (JIRA)" <j...@apache.org>
Subject [jira] [Created] (HBASE-17453) add Ping into HBase server for deprecated GetProtocolVersion
Date Thu, 12 Jan 2017 01:14:16 GMT
Tianying Chang created HBASE-17453:

             Summary: 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

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.

We used GetProtocolVersion in AsyncHBase to detect unhealthy connection to RS since in AWS,
sometimes it enters a state the connection 

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