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From "Peter Vary (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (HIVE-19328) Some error messages like "table not found" are printing to STDERR
Date Fri, 27 Apr 2018 09:01:00 GMT

    [ https://issues.apache.org/jira/browse/HIVE-19328?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16456131#comment-16456131
] 

Peter Vary commented on HIVE-19328:
-----------------------------------

Some time ago I did extensive work on LogHelper (console), and wrote some comments there.
It might help to find out more details about how it currently works:
 [https://github.com/apache/hive/blob/master/ql/src/java/org/apache/hadoop/hive/ql/session/SessionState.java#L1056]
{quote} * Logs info into the log file, and if not silent then into the HiveServer2 or HiveCli
info
 * stream too. Handles an extra detail which will not be printed if null.
 * BeeLine uses the operation log file to show the logs to the user, so depending on the
 * BeeLine settings it could be shown to the user.{quote}

> Some error messages like "table not found" are printing to STDERR
> -----------------------------------------------------------------
>
>                 Key: HIVE-19328
>                 URL: https://issues.apache.org/jira/browse/HIVE-19328
>             Project: Hive
>          Issue Type: Sub-task
>          Components: Logging
>    Affects Versions: 3.0.0
>            Reporter: Aihua Xu
>            Priority: Major
>
> In Driver class, we are printing the exceptions to the log file and to the console through
LogHelper. https://github.com/apache/hive/blob/master/ql/src/java/org/apache/hadoop/hive/ql/Driver.java#L730
> I can see the following exceptions in the stderr.
> FAILED: SemanticException [Error 10001]: Table not found default.sample_07
> If it's from HiveCli, that makes sense to print to console, while if it's beeline talking
to HS2, then such log should go to HS2 log and beeline console. So we should differentiate
these two scenarios.



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