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https://issues.apache.org/jira/browse/SOLR-5088?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13723438#comment-13723438
]
Pavel Yaskevich commented on SOLR-5088:
---------------------------------------
The same (ClassCastException) happens when I try to extend QueryComponent, I
don't declare any methods in extending class tho, could that be a problem?
<searchComponent name="query" class="org.my.solr.index.CustomQueryComponent" />
Here is the class definition I use:
{noformat}
package org.my.solr.index;
import org.apache.solr.handler.component.QueryComponent;
public class CustomQueryComponent extends QueryComponent
{}
{noformat}
It throws following:
{noformat}
org.apache.solr.common.SolrException: Error Instantiating SearchComponent,
org.my.solr.index.CustomQueryComponent failed to instantiate
org.apache.solr.handler.component.SearchComponent
at org.apache.solr.core.SolrCore.<init>(SolrCore.java:835)
at org.apache.solr.core.SolrCore.<init>(SolrCore.java:629)
at
org.apache.solr.core.CoreContainer.createFromLocal(CoreContainer.java:622)
at org.apache.solr.core.CoreContainer.create(CoreContainer.java:657)
at org.apache.solr.core.CoreContainer$1.call(CoreContainer.java:364)
at org.apache.solr.core.CoreContainer$1.call(CoreContainer.java:356)
at java.util.concurrent.FutureTask$Sync.innerRun(FutureTask.java:334)
at java.util.concurrent.FutureTask.run(FutureTask.java:166)
at
java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:471)
at java.util.concurrent.FutureTask$Sync.innerRun(FutureTask.java:334)
at java.util.concurrent.FutureTask.run(FutureTask.java:166)
at
java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1145)
at
java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:615)
at java.lang.Thread.run(Thread.java:724)
Caused by: org.apache.solr.common.SolrException: Error Instantiating
SearchComponent, org.my.solr.index.CustomQueryComponent failed to instantiate
org.apache.solr.handler.component.SearchComponent
at org.apache.solr.core.SolrCore.createInstance(SolrCore.java:551)
at org.apache.solr.core.SolrCore.createInitInstance(SolrCore.java:586)
at org.apache.solr.core.SolrCore.initPlugins(SolrCore.java:2173)
at org.apache.solr.core.SolrCore.initPlugins(SolrCore.java:2167)
at org.apache.solr.core.SolrCore.initPlugins(SolrCore.java:2200)
at
org.apache.solr.core.SolrCore.loadSearchComponents(SolrCore.java:1231)
at org.apache.solr.core.SolrCore.<init>(SolrCore.java:766)
... 13 more
Caused by: java.lang.ClassCastException: class
org.my.solr.index.CustomQueryComponent
at java.lang.Class.asSubclass(Class.java:3116)
at
org.apache.solr.core.SolrResourceLoader.findClass(SolrResourceLoader.java:433)
at
org.apache.solr.core.SolrResourceLoader.findClass(SolrResourceLoader.java:381)
at org.apache.solr.core.SolrCore.createInstance(SolrCore.java:530)
... 19 more
ERROR 22:49:54,923 null:org.apache.solr.common.SolrException: Unable to create
core: test.users
at
org.apache.solr.core.CoreContainer.recordAndThrow(CoreContainer.java:1150)
at org.apache.solr.core.CoreContainer.create(CoreContainer.java:666)
at org.apache.solr.core.CoreContainer$1.call(CoreContainer.java:364)
at org.apache.solr.core.CoreContainer$1.call(CoreContainer.java:356)
at java.util.concurrent.FutureTask$Sync.innerRun(FutureTask.java:334)
at java.util.concurrent.FutureTask.run(FutureTask.java:166)
at
java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:471)
at java.util.concurrent.FutureTask$Sync.innerRun(FutureTask.java:334)
at java.util.concurrent.FutureTask.run(FutureTask.java:166)
at
java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1145)
at
java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:615)
at java.lang.Thread.run(Thread.java:724)
{noformat}
> ClassCastException is thrown when trying to use custom SearchHandler.
> ---------------------------------------------------------------------
>
> Key: SOLR-5088
> URL: https://issues.apache.org/jira/browse/SOLR-5088
> Project: Solr
> Issue Type: Bug
> Affects Versions: 4.4
> Reporter: Pavel Yaskevich
>
> Hi guys,
> I'm trying to replace solr.SearchHandler to custom one in solrconfig.xml
> for one of the stores, and it's throwing following exception:
> {noformat}
> Caused by: org.apache.solr.common.SolrException: RequestHandler init failure
> at
> org.apache.solr.core.RequestHandlers.initHandlersFromConfig(RequestHandlers.java:167)
> at org.apache.solr.core.SolrCore.<init>(SolrCore.java:772)
> ... 13 more
> Caused by: org.apache.solr.common.SolrException: Error Instantiating Request
> Handler, org.my.solr.index.CustomSearchHandler failed to instantiate
> org.apache.solr.request.SolrRequestHandler
> at org.apache.solr.core.SolrCore.createInstance(SolrCore.java:551)
> at org.apache.solr.core.SolrCore.createRequestHandler(SolrCore.java:603)
> at
> org.apache.solr.core.RequestHandlers.initHandlersFromConfig(RequestHandlers.java:153)
> ... 14 more
> Caused by: java.lang.ClassCastException: class
> org.my.solr.index.CustomSearchHandler
> at java.lang.Class.asSubclass(Class.java:3116)
> at
> org.apache.solr.core.SolrResourceLoader.findClass(SolrResourceLoader.java:433)
> at
> org.apache.solr.core.SolrResourceLoader.findClass(SolrResourceLoader.java:381)
> at org.apache.solr.core.SolrCore.createInstance(SolrCore.java:530)
> ... 16 more
> {noformat}
> I actually tried extending SearchHandler, and implementing SolrRequestHandler
> as well as extending RequestHandlerBase and it's all the same
> ClassCastException result...
> org.my.solr.index.CustomSearchHandler is definitely in class path and
> recompiled every retry.
> Maybe I'm doing something terribly wrong?
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