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From "Prasanth Jayachandran (JIRA)" <>
Subject [jira] [Commented] (HIVE-13027) Async loggers for LLAP
Date Wed, 17 Feb 2016 21:22:18 GMT


Prasanth Jayachandran commented on HIVE-13027:

The automatic log4j2 configurator will look for file specified via -Dlog4j.configurationFile..
if this file could not be located in classpath then it will default to ERROR,console. 

Programmatic initialization of logging happens in CliDriver and when running metastore as
a service. Programmatic initialization looks for mr/ExecDriver which
initializes the logging for child JVM uses I suspect initialization
using as it is mr only code path. 

> Async loggers for LLAP
> ----------------------
>                 Key: HIVE-13027
>                 URL:
>             Project: Hive
>          Issue Type: Improvement
>          Components: Logging
>    Affects Versions: 2.1.0
>            Reporter: Prasanth Jayachandran
>            Assignee: Prasanth Jayachandran
>         Attachments: HIVE-13027.1.patch
> LOG4j2's async logger claims to have 6-68 times better performance than synchronous logger.
> We should use that for LLAP. 

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