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From "Andrey Strizhkin (JIRA)" <j...@apache.org>
Subject [jira] Commented: (SOLR-788) MoreLikeThis should support distributed search
Date Wed, 06 Oct 2010 20:18:31 GMT

    [ https://issues.apache.org/jira/browse/SOLR-788?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12918655#action_12918655
] 

Andrey Strizhkin commented on SOLR-788:
---------------------------------------

applied AlternateDistributedMLT.patch to trunk (rev 1003607) and got NPE

{code}
23:53:15,452 ERROR [SolrDispatchFilter] java.lang.NullPointerException
        at org.apache.solr.handler.component.MoreLikeThisComponent.finishStage(MoreLikeThisComponent.java:147)
        at org.apache.solr.handler.component.SearchHandler.handleRequestBody(SearchHandler.java:315)
        at org.apache.solr.handler.RequestHandlerBase.handleRequest(RequestHandlerBase.java:131)
        at org.apache.solr.core.SolrCore.execute(SolrCore.java:1325)
        at org.apache.solr.servlet.SolrDispatchFilter.execute(SolrDispatchFilter.java:337)
        at org.apache.solr.servlet.SolrDispatchFilter.doFilter(SolrDispatchFilter.java:240)
        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:926)
        at org.mortbay.jetty.HttpParser.parseNext(HttpParser.java:549)
        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:410)
        at org.mortbay.thread.QueuedThreadPool$PoolThread.run(QueuedThreadPool.java:582)
{code}

fixed NPE but MLT still doesn't work correctly: i think it returns 'like' documents from shard
where requested in query document is physically hosted

> MoreLikeThis should support distributed search
> ----------------------------------------------
>
>                 Key: SOLR-788
>                 URL: https://issues.apache.org/jira/browse/SOLR-788
>             Project: Solr
>          Issue Type: Improvement
>          Components: MoreLikeThis
>            Reporter: Grant Ingersoll
>            Priority: Minor
>             Fix For: Next
>
>         Attachments: AlternateDistributedMLT.patch, MoreLikeThisComponentTest.patch,
SolrMoreLikeThisPatch.txt
>
>
> The MoreLikeThis component should support distributed processing.
> See SOLR-303.

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