[jira] [Commented] (HIVE-21123) LLAP : same sql and TPCDS data occurs different results using textfile fileformat

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

    [ https://issues.apache.org/jira/browse/HIVE-21123?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16742794#comment-16742794 ] 

zhangbutao commented on HIVE-21123:
-----------------------------------

So ,i have some questions to be answered:
1)Why are the results different each time using textfile format?  Is llap cache causing this problem?
2)Is llap only applicable to orc format?  The orc data can acquire right restults the same as tez container  mode .
3)Is there a solution about llap using textfile?

 Thanks a lot !



> LLAP : same sql and TPCDS data occurs  different results  using textfile fileformat
> -----------------------------------------------------------------------------------
>
>                 Key: HIVE-21123
>                 URL: https://issues.apache.org/jira/browse/HIVE-21123
>             Project: Hive
>          Issue Type: Bug
>          Components: File Formats, llap
>    Affects Versions: 3.1.0
>            Reporter: zhangbutao
>            Priority: Major
>         Attachments: llap_tpcds_text_500_query53.sql, tez_tpcds_text_500_query53.sql
>
>
> I found that llap execution occurs different result using textfile fileformat and same sql when  i test llap with TPCDS textfile data.  And the orc fileformat is ok.  The attachment(llap_tpcds_text_500_query53.sql) are TPCDS query53.sql  execution results with data tpcds_text_500(500GB textfile), and you can find the results is different every time. The attachment (tez_tpcds_text_500_query53.sql)  is the tez container execution mode and it is the right result, which is same as llap with orc textfile fileformat.



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