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https://issues.apache.org/jira/browse/DRILL-5659?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16084480#comment-16084480
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Parth Chandra commented on DRILL-5659:
--------------------------------------

Definitely caused by the commit ( d11aba2e55323bb5a6a9deb5bb09fd87470dcedf ) 
for DRILL-4335. Unfortunately, the refactoring changes are too many. I'll spend 
the rest of the day doing a diff and trying to figure out. Seems easier to do 
that since the problem is showing up intermittently for me.

> C++ Client (master) behavior is unstable resulting incorrect result or 
> exception in API calls
> ---------------------------------------------------------------------------------------------
>
>                 Key: DRILL-5659
>                 URL: https://issues.apache.org/jira/browse/DRILL-5659
>             Project: Apache Drill
>          Issue Type: Bug
>            Reporter: Rob Wu
>             Fix For: 1.11.0
>
>         Attachments: 1-10cppClient-1.10.0Drillbit-hive.log, 
> 1-10cppClient-1.10.0Drillbit-metadata and catalog test.log, 
> 1-10cppClient-1.9.0Drillbit-dfs.log, 1-10cppClient-1.9.0Drillbit-hive.log, 
> 1-10cppClient-1.9.0Drillbit-metadata and catalog test.log, 
> 1-11cppClient-1.10.0Drillbit-hive.log, 1-11cppClient-1.10.0Drillbit-metadata 
> and catalog test.log, 1-11cppClient-1.9.0Drillbit-dfs.log, 
> 1-11cppClient-1.9.0Drillbit-hive.log, 1-11cppClient-1.9.0Drillbit-metadata 
> and catalog test.log
>
>
> I recently compiled the C++ client (on windows) from master and tested 
> against a 1.9.0 drillbit. The client's behavior does not meet the stable 
> release requirement.
> Some API functionalities are broken and should be investigated.
> Most noticeable is the getColumns(...) call. It will throw an exception with 
> "Cannot decode getcolumns results" when the number of rows (column records) 
> exceeds a certain number. 
> I also noticed that: during query execution + data retrieval, if the table is 
> large enough, the result coming back will start to become NULL or empty.
> I will see if I can generate some drillclient logs to put in the attachment.
> I will also compile and test on other platforms.



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