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https://issues.apache.org/jira/browse/ACCUMULO-1242?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13807966#comment-13807966
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Eric Newton commented on ACCUMULO-1242:
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{{trace on}} in the shell does not set logging to the TRACE level, it turns on
distributed tracing. That is, it collects timing information for a an
operation across processes. It is unrelated to log levels. {{debug on}} does
affect the log level of the client API.
> Consistent logging
> ------------------
>
> Key: ACCUMULO-1242
> URL: https://issues.apache.org/jira/browse/ACCUMULO-1242
> Project: Accumulo
> Issue Type: Bug
> Components: build
> Reporter: Christopher Tubbs
> Assignee: Ed Coleman
> Labels: log4j, logging, logs, slf4j
> Fix For: 1.7.0
>
> Attachments: dynamicLog.tgz
>
>
> Logging dependencies are very inconsistent. It seems we have absolute
> dependencies on log4j, yet use slf4j sometimes, and log4j other times. In
> some of our tests we have slf4j-nop as a test dependency.
> It seems we could consolidate a lot of this if we simply did:
> # slf4j-api : compile
> # slf4j-log4j12 : runtime
> # slf4j-nop : test
> # log4j : runtime
> We could do this in the parent POM and get rid of all the different
> dependencies throughout the code.
> I don't know that we could ever use anything other than slf4j-log4j12 as the
> implementation (unless our dependencies broke away from using log4j directly
> also), but at least we'd clean up all the logging dependencies in our
> code/build, and would be ready to switch to something better if something
> came along. Further, if somebody wanted to reuse our code, and weren't tied
> to log4j, because they didn't need our transitive dependencies that locked in
> log4j, they could easily depend on their own slf4j implementation jar, and
> all the logging in our code would still work correctly for them without
> needing to use something like log4j-over-slf4j.
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