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From "Thejas M Nair (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (HIVE-11304) Migrate to Log4j2 from Log4j 1.x
Date Thu, 23 Jul 2015 00:44:05 GMT

    [ https://issues.apache.org/jira/browse/HIVE-11304?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14637995#comment-14637995
] 

Thejas M Nair commented on HIVE-11304:
--------------------------------------

[~prasanth_j], [~hsubramaniyan] added changes to be able to change logging level between queries
in HIVE-10119. TestOperationLoggingAPI has tests for it.
We would need to detect the current logging level for current operation in doAppend() (or
its equivalent in log4j2)




> Migrate to Log4j2 from Log4j 1.x
> --------------------------------
>
>                 Key: HIVE-11304
>                 URL: https://issues.apache.org/jira/browse/HIVE-11304
>             Project: Hive
>          Issue Type: Improvement
>    Affects Versions: 2.0.0
>            Reporter: Prasanth Jayachandran
>            Assignee: Prasanth Jayachandran
>         Attachments: HIVE-11304.2.patch, HIVE-11304.patch
>
>
> Log4J2 has some great benefits and can benefit hive significantly. Some notable features
include
> 1) Performance (parametrized logging, performance when logging is disabled etc.) More
details can be found here https://logging.apache.org/log4j/2.x/performance.html
> 2) RoutingAppender - Route logs to different log files based on MDC context (useful for
HS2, LLAP etc.)
> 3) Asynchronous logging
> This is an umbrella jira to track changes related to Log4j2 migration.



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