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From "Mike Drob (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (ACCUMULO-3952) bin/accumulo should verify log4j.jar was found
Date Tue, 04 Aug 2015 02:13:05 GMT

    [ https://issues.apache.org/jira/browse/ACCUMULO-3952?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14652962#comment-14652962
] 

Mike Drob commented on ACCUMULO-3952:
-------------------------------------

I don't think it's wise to check for log4j in the environment. We've been slowly making our
way toward pure slf4j-api consumption, and if log4j doesn't exist then the proper behaviour
is "no logging" or possibly "print a warning to stdout/err" but never "fail quickly/loudly/somehow."

What do you envision this verification doing, Josh?

> bin/accumulo should verify log4j.jar was found
> ----------------------------------------------
>
>                 Key: ACCUMULO-3952
>                 URL: https://issues.apache.org/jira/browse/ACCUMULO-3952
>             Project: Accumulo
>          Issue Type: Improvement
>          Components: scripts
>    Affects Versions: 1.6.0, 1.6.1, 1.6.2, 1.6.3, 1.7.0
>            Reporter: Josh Elser
>            Assignee: Josh Elser
>             Fix For: 1.6.4, 1.7.1, 1.8.0
>
>
> Just spent a few hours trying to wrangle this one down. Ambari was failing to start all
Accumulo components. After digging in, I realized that when Ambari was invoking {{accumulo}},
it was failing to find the log4j jar.
> It turns out this was a deployment issue where the home directory for the {{accumulo}}
user was never created and the find command failed:
> {noformat}
> find: cannot stat current directory: Permission denied
> {noformat}
> Sadly, I couldn't find this error until I manually edited the accumulo script to remove
the {{2>/dev/null}} redirect. We should have been able to realize that we never found the
log4j jar and then clearly printed an error and exited instead of leading me on a goosechase
by silently proceeding.
> Same goes for the slf4j jars.



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