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From "Christopher Tubbs (JIRA)" <j...@apache.org>
Subject [jira] [Created] (ACCUMULO-3641) Mark slf4j implementation dependencies "optional"
Date Wed, 04 Mar 2015 22:46:39 GMT
Christopher Tubbs created ACCUMULO-3641:
-------------------------------------------

             Summary: Mark slf4j implementation dependencies "optional"
                 Key: ACCUMULO-3641
                 URL: https://issues.apache.org/jira/browse/ACCUMULO-3641
             Project: Accumulo
          Issue Type: Sub-task
            Reporter: Christopher Tubbs


After ACCUMULO-1242 is complete, we should not have any more direct usage of log4j or any
other particular slf4j implementation. As such, we should mark log4j (and any other slf4j
implementations) as optional in the dependencies section of the POM.

["Optional" dependencies in Maven|http://maven.apache.org/guides/introduction/introduction-to-optional-and-excludes-dependencies.html]
are not automatically inherited transitively when other projects depend on ours. This is important,
because if somebody writes a client application which depends on Accumulo code, we should
not be forcing that application into a particular logging implementation. Marking it optional
is preferable to forcing them to exclude the transitive dependencies in order to provide their
own. It will also prevent conflicts when they have dependencies on other projects, which require
a particular conflicting implementation of slf4j.



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