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https://issues.apache.org/jira/browse/HBASE-12341?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15668709#comment-15668709
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stack commented on HBASE-12341:
-------------------------------
Sample annoying message dumped on brand new build of master:
{code}
stack@ve0524:~$ ./hbase/bin/hbase --config ~/conf_hbase/ shell
SLF4J: Class path contains multiple SLF4J bindings.
SLF4J: Found binding in
[jar:file:/home/stack/hbase-2.0.0-SNAPSHOT/lib/slf4j-log4j12-1.6.1.jar!/org/slf4j/impl/StaticLoggerBinder.class]
SLF4J: Found binding in
[jar:file:/home/stack/hadoop-2.7.3-SNAPSHOT/share/hadoop/common/lib/slf4j-log4j12-1.7.10.jar!/org/slf4j/impl/StaticLoggerBinder.class]
SLF4J: See http://www.slf4j.org/codes.html#multiple_bindings for an explanation.
SLF4J: Actual binding is of type [org.slf4j.impl.Log4jLoggerFactory]
{code}
slf4j is not what we use for logging. Its 3rd-party usage. At least the
complaint is clean. We need to clean this stuff up. Looks bad.
> Overhaul logging; log4j2, machine-readable, etc.
> ------------------------------------------------
>
> Key: HBASE-12341
> URL: https://issues.apache.org/jira/browse/HBASE-12341
> Project: HBase
> Issue Type: Umbrella
> Reporter: stack
> Priority: Critical
> Fix For: 2.0.0
>
>
> This is a general umbrella issue for 2.x logging improvements. Hang related
> work off this one.
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