On 6/24/2020 1:59 PM, Peter van de Kerk wrote:
So I copied files from C:\solr-8.5.2\dist to C:\solr-8.5.2\server\lib
But then I get error
org.apache.solr.common.SolrException:org.apache.solr.common.SolrException:
Error Instantiating requestHandler,
org.apache.solr.handler.dataimport.DataImportHandler failed to instantiate
org.apache.solr.request.SolrRequestHandler
All of the errors will be MUCH longer than what you have included here,
and we need that detail to diagnose anything. If you are seeing these
in the admin UI "logging" tab, you can click on the little "i" icon to
expand them. But be aware that you'll have to read/copy the expanded
data very quickly - the admin UI will quickly close the expansion. It's
much better to go to the actual logfile than use the admin UI.
There are better locations than server/lib for jars, but I don't think
that's causing the problem. You should definitely NOT copy ALL of the
jars in the dist directory -- this places an additional copy of the main
Solr jars on the classpath, and having the same jar accessible from two
places is a VERY bad thing for Java software. It causes some really
weird problems, and I can see this issue being a result of that. For
most DIH uses, you only need the "solr-dataimporthandler-X.Y.Z.jar"
file. For some DIH use cases (but not most of them) you might also need
the extras jar.
Thanks,
Shawn
