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From "Prasanth Jayachandran (JIRA)" <>
Subject [jira] [Updated] (HIVE-9756) LLAP: use log4j 2 for llap (log to separate files, etc.)
Date Sat, 14 May 2016 02:15:12 GMT


Prasanth Jayachandran updated HIVE-9756:
    Attachment: HIVE-9756.3.patch

[~sershe] Attaching rebased patch. Also updated the properties to use the new  configuration
format. I haven't tested this patch extensively yet. This patch creates new file per dag id.
The file name format will be 

There might be one more change required for this. Since MDC contexts are not inheritable for
the threads created using thread pools, in TaskRunnerCallable we might need to pass a custom
executor service that clones the MDC in beforeExecute() hook of thread pool. Alternatively,
we can change CallableWithNdc so that it clones the MDC as well. 


> LLAP: use log4j 2 for llap (log to separate files, etc.)
> --------------------------------------------------------
>                 Key: HIVE-9756
>                 URL:
>             Project: Hive
>          Issue Type: Sub-task
>    Affects Versions: 2.0.0
>            Reporter: Gunther Hagleitner
>            Assignee: Prasanth Jayachandran
>         Attachments: HIVE-9756.1.patch, HIVE-9756.2.patch, HIVE-9756.3.patch
> For the INFO logging, we'll need to use the log4j-jcl 2.x upgrade-path to get throughput
friendly logging.

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