Hi list,
Does anybody know if the Suggester component is designed to work with shards?
I'm asking because the documentation implies that it should (since ...Suggester
reuses much of the SpellCheckComponent infrastructure…, and the
SpellCheckComponent is documented as supporting a distributed setup).
But when I make a request, I get an exception:
java.lang.NullPointerException
at
org.apache.solr.handler.component.QueryComponent.mergeIds(QueryComponent.java:493)
at
org.apache.solr.handler.component.QueryComponent.handleResponses(QueryComponent.java:390)
at
org.apache.solr.handler.component.SearchHandler.handleRequestBody(SearchHandler.java:289)
at
org.apache.solr.handler.RequestHandlerBase.handleRequest(RequestHandlerBase.java:129)
at org.apache.solr.core.SolrCore.execute(SolrCore.java:1368)
at
org.apache.solr.servlet.SolrDispatchFilter.execute(SolrDispatchFilter.java:356)
at
org.apache.solr.servlet.SolrDispatchFilter.doFilter(SolrDispatchFilter.java:252)
at
org.mortbay.jetty.servlet.ServletHandler$CachedChain.doFilter(ServletHandler.java:1157)
at org.mortbay.servlet.UserAgentFilter.doFilter(UserAgentFilter.java:81)
at org.mortbay.servlet.GzipFilter.doFilter(GzipFilter.java:132)
at
org.mortbay.jetty.servlet.ServletHandler$CachedChain.doFilter(ServletHandler.java:1157)
at
org.mortbay.jetty.servlet.ServletHandler.handle(ServletHandler.java:388)
at
org.mortbay.jetty.security.SecurityHandler.handle(SecurityHandler.java:216)
at
org.mortbay.jetty.servlet.SessionHandler.handle(SessionHandler.java:182)
at
org.mortbay.jetty.handler.ContextHandler.handle(ContextHandler.java:765)
at org.mortbay.jetty.webapp.WebAppContext.handle(WebAppContext.java:418)
at
org.mortbay.jetty.handler.ContextHandlerCollection.handle(ContextHandlerCollection.java:230)
at
org.mortbay.jetty.handler.HandlerCollection.handle(HandlerCollection.java:114)
at
org.mortbay.jetty.handler.HandlerWrapper.handle(HandlerWrapper.java:152)
at org.mortbay.jetty.Server.handle(Server.java:326)
at
org.mortbay.jetty.HttpConnection.handleRequest(HttpConnection.java:542)
at
org.mortbay.jetty.HttpConnection$RequestHandler.headerComplete(HttpConnection.java:923)
at org.mortbay.jetty.HttpParser.parseNext(HttpParser.java:547)
at org.mortbay.jetty.HttpParser.parseAvailable(HttpParser.java:212)
at org.mortbay.jetty.HttpConnection.handle(HttpConnection.java:404)
at
org.mortbay.io.nio.SelectChannelEndPoint.run(SelectChannelEndPoint.java:409)
at
org.mortbay.thread.QueuedThreadPool$PoolThread.run(QueuedThreadPool.java:582)
Looking at the QueryComponent.java:493 code, I see:
SolrDocumentList docs =
(SolrDocumentList)srsp.getSolrResponse().getResponse().get("response");
// calculate global maxScore and numDocsFound
if (docs.getMaxScore() != null) { <<<< This is line 493
So I'm assuming the "docs" variable is null, which would happen if there is no
"response" element in the Solr response.
If I make a direct request to the request handler in one core (e.g.
http://hostname:8080/solr/core0/select?qt=suggest-core&q=rad), the query works.
But I see that there's no element named "response", unlike a regular query.
<response>
<lst name="responseHeader">
<int name="status">0</int>
<int name="QTime">1</int>
</lst>
<lst name="spellcheck">
<lst name="suggestions">
<lst name="rad">
<int name="numFound">10</int>
<int name="startOffset">0</int>
<int name="endOffset">3</int>
<arr name="suggestion">
<str>radair</str>
<str>radar</str>
</arr>
</lst>
</lst>
</lst>
</response>
So I'm wondering if my configuration is just borked and this should work, or
the fact that the Suggester doesn't return a response field means that it just
doesn't work with shards.
Thanks,
-- Ken
--------------------------------------------
http://about.me/kkrugler
+1 530-210-6378
--------------------------
Ken Krugler
http://www.scaleunlimited.com
custom big data solutions & training
Hadoop, Cascading, Mahout & Solr
