Hi,
I'm creating a custom request handler to return a list of live cores in
Solr.
On startup, I get this exception for each core:
Jul 31, 2009 5:20:39 PM org.apache.solr.common. SolrException log
SEVERE: java.lang.ClassCastException: LiveCoresHandler
at
org.apache.solr.core.RequestHandler
Can you cross check the class attribute for your handler in solrconfig.xml?
My guess is that it is specified as "solr.LiveCoresHandler". It should be
fully qualified class name - com.foo.path.to.LiveCoresHandler instead.
Moreover, I am damn sure that you did not forget to drop your jar into
solr.h
Hi,
Thanks for your suggestions!
I'm sure I have the class name right - changing it to something patently
incorrect results in the expected
"org.apache.solr.common.SolrException: Error loading class ...", rather than
the ClassCastException.
I did have some problems getting my class on the app ser
>
> I'm sure I have the class name right - changing it to something patently
> incorrect results in the expected "org.apache.solr.common.SolrException:
> Error loading class ...", rather thanthe ClassCastException.
>
You are right about that, James.
Which Solr version are you using?
Can you please
I guess a requesthandler may not be the right component to implement.
try implementing a CoreAdminHandler .
http://wiki.apache.org/solr/CoreAdmin#head-dfab3233db613c1976e05cdf894aa326ca64d312
On Mon, Aug 3, 2009 at 9:11 PM, James Brady wrote:
> Hi,
> I'm creating a custom request handler to retur
Solr version: 1.3.0 694707
solrconfig.xml:
public class LiveCoresHandler extends RequestHandlerBase {
public void init(NamedList args) { }
public String getDescription() { return ""; }
public String getSource() { return ""; }
public String getSourceId() { return ""; }
pub
what is the package of LiveCoresHandler ?
I guess the requestHandler name should be name="/livecores"
On Tue, Aug 4, 2009 at 5:04 PM, James Brady wrote:
> Solr version: 1.3.0 694707
>
> solrconfig.xml:
>
>
> public class LiveCoresHandler extends RequestHandlerBase {
> public void init(Named
Hi, the LiveCoresHandler is in the default package - the behaviour's the
same if I have it in a properly namespaced package too...
The requestHandler name can start either be a path (starting with '/') or a
qt name:
http://wiki.apache.org/solr/SolrRequestHandler
2009/8/4 Noble Paul നോബിള് नोब्ळ्
There is *something* strange going on with classloaders; when I put my
.class files in the right place in WEB-INF/lib in a repackaged solr.war
file, it's not found by the plugin loader ("Error loading class").
So the plugin classloader isn't seeing stuff inside WEB-INF/lib.
That explains why the
Hi James!
James Brady schrieb:
There is *something* strange going on with classloaders; when I put my
.class files in the right place in WEB-INF/lib in a repackaged solr.war
file, it's not found by the plugin loader ("Error loading class").
So the plugin classloader isn't seeing stuff inside WE
Hi Chantal!
I've included a stack trace below.
I've attached a debugger to the server starting up, and it is finding my
class file as expected... I agree it looks like something wrong with how
I've deployed the compiled code, but perhaps different Solr versions at
compile time and run time? Howeve
Hi there,
could it be that something with the Generics code in the plugin loader
classes works not as expected? Citing for example
http://stackoverflow.com/questions/372250/java-generics-arrays-and-the-classcastexception
this is because
"""
Generics only provide type-safety at compile-time.
"""
Code is from AbstractPluginLoader in the solr plugin package, 1.3 (the
regular stable release, no svn checkout).
80-84
@SuppressWarnings("unchecked")
protected T create( ResourceLoader loader, String name, String
className, Node node ) throws Exception
{
return (T) loader.newInstance( classN
Yeah I was thinking T would be SolrRequestHandler too. Eclipse's debugger
can't tell me...
Lot's of other handlers are created with no problem before my plugin falls
over, so I don't think it's a problem with T not being what we expected.
Do you know of any working examples of plugins I can downl
James Brady schrieb:
Yeah I was thinking T would be SolrRequestHandler too. Eclipse's debugger
can't tell me...
You could try disassembling. Or Eclipse opens classes in a very
rudimentary format when there is no source code attached. Maybe it shows
the actual return value there, instead of
OK, problem solved! Well, worked around.
I gave up on the new style plugin loading in a multicore Jetty setup, and
packaged up my plugin in a rebuilt solr.war.
I had tried this before, but only putting the class files in WEB-INF/lib. If
I put a jar file in there, it works.
2009/8/4 Chantal Acker
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