<lib dir="..."/> directives are logging serious errors when they should not be
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Key: SOLR-2364
URL: https://issues.apache.org/jira/browse/SOLR-2364
Project: Solr
Issue Type: Bug
Reporter: Hoss Man
Assignee: Hoss Man
Fix For: 3.1, 4.0
The {{<lib dir="foo" ... />}} syntax for solrconfig.xml was specificly designed
so that it would *not* log errors if the directory (or jars in that directory)
didn't exist -- this was designed to make it possible to have a {{<lib/>}}
directive that would optionally include jars if they are not there, and ignore
them if they can't be found ({{<lib path="foo/bar.jar".../>}} can be used when
you have an explict jar you want to load and you want an error if it's not
there)
At some point in the not too distant past, something seems to have changed on
both the 3x and trunk branches in how SolrResourceLoader.replaceClassLoader
works, such that in the example you get errors logged like this...
{noformat}
Feb 15, 2011 4:52:03 PM org.apache.solr.core.SolrResourceLoader addToClassLoader
SEVERE: Can't find (or read) file to add to classloader: /total/crap/dir/ignored
{noformat}
This is in spite of hte fact that the solrconfig.xml says...
{noformat}
<!-- If a dir option (with or without a regex) is used and nothing is found
that matches, it will be ignored
-->
<lib dir="../../contrib/clustering/lib/downloads/" />
<lib dir="../../contrib/clustering/lib/" />
<lib dir="/total/crap/dir/ignored" />
{noformat}
Note these errors are also logged when running the example, even though there
are no {{<lib/>}} declarations that corrispond to them -- they seem to be
errors coming from the default behavior of looking for $solr_home/lib (which is
evidently happening twice?)...
{noformat}
Feb 15, 2011 4:52:03 PM org.apache.solr.core.SolrResourceLoader <init>
INFO: Solr home set to 'solr/'
Feb 15, 2011 4:52:03 PM org.apache.solr.core.SolrResourceLoader addToClassLoader
SEVERE: Can't find (or read) file to add to classloader: solr/./lib
Feb 15, 2011 4:52:03 PM org.apache.solr.core.SolrResourceLoader <init>
INFO: Solr home set to 'solr/./'
Feb 15, 2011 4:52:03 PM org.apache.solr.core.SolrResourceLoader addToClassLoader
SEVERE: Can't find (or read) file to add to classloader: solr/././lib
{noformat}
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