[jira] [Commented] (HIVE-13264) JDBC driver makes 2 Open Session Calls for every open session

["Vaibhav Gumashta (JIRA)" <ji...@apache.org>]

    [ https://issues.apache.org/jira/browse/HIVE-13264?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15269788#comment-15269788 ] 

Vaibhav Gumashta commented on HIVE-13264:
-----------------------------------------

[~nithinmahesh] I thought the issue with the extra OpenSession RPC call within HiveConnection#createHttpTransport (https://github.com/apache/hive/blob/master/jdbc/src/java/org/apache/hive/jdbc/HiveConnection.java#L257). I don't see your patch addressing that.

> JDBC driver makes 2 Open Session Calls for every open session
> -------------------------------------------------------------
>
>                 Key: HIVE-13264
>                 URL: https://issues.apache.org/jira/browse/HIVE-13264
>             Project: Hive
>          Issue Type: Bug
>          Components: JDBC
>            Reporter: NITHIN MAHESH
>            Assignee: NITHIN MAHESH
>              Labels: jdbc
>         Attachments: HIVE-13264.1.patch, HIVE-13264.2.patch, HIVE-13264.3.patch, HIVE-13264.4.patch, HIVE-13264.patch
>
>
> When HTTP is used as the transport mode by the Hive JDBC driver, we noticed that there is an additional open/close session just to validate the connection. 
>  
> TCLIService.Iface client = new TCLIService.Client(new TBinaryProtocol(transport));
>       TOpenSessionResp openResp = client.OpenSession(new TOpenSessionReq());
>       if (openResp != null) {
>         client.CloseSession(new TCloseSessionReq(openResp.getSessionHandle()));
>       }
>  
> The open session call is a costly one and should not be used to test transport. 



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