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https://issues.apache.org/jira/browse/SOLR-2586?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13053468#comment-13053468
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David Smiley commented on SOLR-2586:
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So if "work" is needed (to avoid rare error conditions if a temp directory is
used), that still leaves the question of "logs". The only thing approaching
use of this directory is some commented-out configuration in jetty.xml. So as
it stands, it really isn't used. I think if if someone uncomments that part of
jetty.xml, then they can very well make the logs directory. What I'm after
here is a little bit of simplification for new users. I certainly don't get any
heartburn over these directories, but if someone new sees "logs" and never sees
anything go there, they might think something is wrong. And removing it is one
less directory. I say this after updating my Solr book, walking the users
through the directory layout in the 1st chapter. No big deal, but
simplification/clarity is good.
> example work & logs directories needed?
> ---------------------------------------
>
> Key: SOLR-2586
> URL: https://issues.apache.org/jira/browse/SOLR-2586
> Project: Solr
> Issue Type: Improvement
> Components: Build
> Reporter: David Smiley
> Priority: Minor
>
> Firstly, what prompted this issue was me wanting to use a git solr mirror but
> finding that git's lack of empty-directory support made the "example" ant
> task fail. This task requires examples/work to be in place so that it can
> delete its contents. Fixing this was a simple matter of adding:
> {code:xml}
> <mkdir dir="${example}/work" /><!-- in case not there -->
> {code}
> Right before the delete task.
> But then it occurred to me, why even have a "work" directory since Jetty will
> apparently use a temp directory instead. -- try for yourself (stdout snippet):
> bq. 2011-06-11 00:51:26.177:INFO::Extract
> file:/SmileyDev/Search/lucene-solr/solr/example/webapps/solr.war to
> /var/folders/zo/zoQJvqc9E0076p0THiri+k+++TI/-Tmp-/Jetty_0_0_0_0_8983_solr.war__solr__k1kf17/webapp
> On my Mac, this same directory was used for multiple runs, so somehow Jetty
> or the VM figures out how to reuse it.
> Since this "example" setup isn't a *real* installation -- it's just for
> demonstration, arguably it should not contain what it doesn't need.
> Likewise, perhaps the empty example/logs directory should be deleted. It's
> not used by default any way.
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