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From "Aihua Xu (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (HIVE-16061) When hive.async.log.enabled is set to true, some output is not printed to the beeline console
Date Tue, 21 Mar 2017 20:30:42 GMT

    [ https://issues.apache.org/jira/browse/HIVE-16061?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15935272#comment-15935272
] 

Aihua Xu commented on HIVE-16061:
---------------------------------

Thanks [~prasanth_j]  Agree. I was checking MDC related and RoutingAppender as well. Can you
point me the code in LLAP which uses MDC based routing?  

> When hive.async.log.enabled is set to true, some output is not printed to the beeline
console
> ---------------------------------------------------------------------------------------------
>
>                 Key: HIVE-16061
>                 URL: https://issues.apache.org/jira/browse/HIVE-16061
>             Project: Hive
>          Issue Type: Bug
>          Components: Logging
>    Affects Versions: 2.1.1
>            Reporter: Aihua Xu
>            Assignee: Aihua Xu
>         Attachments: HIVE-16061.1.patch, HIVE-16061.2.patch
>
>
> Run a hiveserver2 instance "hive --service hiveserver2".
> Then from another console, connect to hiveserver2 "beeline -u "jdbc:hive2://localhost:10000"
> When you run a MR job like "select t1.key from src t1 join src t2 on t1.key=t2.key",
some of the console logs like MR job info are not printed to the console while it just print
to the hiveserver2 console.
> When hive.async.log.enabled is set to false and restarts the HiveServer2, then the output
will be printed to the beeline console.
> OperationLog implementation uses the ThreadLocal variable to store associated the log
file. When the hive.async.log.enabled is set to true, the logs will be processed by a ThreadPool
and  the actual threads from the pool which prints the message won't be able to access the
log file stored in the original thread. 



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