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https://issues.apache.org/jira/browse/SOLR-5125?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13743327#comment-13743327
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Mark Miller edited comment on SOLR-5125 at 8/18/13 6:37 PM:
------------------------------------------------------------

bq. DistributedMLTComponentTest is currently @Ignored

Yeah - for some reason it was failing constantly on freebsd, but passing on 
other OS's - I've never gotten back to it..

bq. it seems to only be verifying that the control client matches the distrib 
client 

Yup - it's about as basic a test as you can get. I'm not sure that it's useless 
though - there should be tests for non distributed mlt - so if distrib mlt 
matches it, that seems like it's doing something useful.

Basically, I tried to bang out the simplest thing I could that seemed to make 
distributed mlt possible - I had absolutely no need for it, but its a common 
user request. I tried to get someone that did have an interest in it to test it 
out at the time, but since no one responded, I figured it was an improvement 
over no support at all - if it didn't work in all cases, JIRA's would be filed, 
things would move forward, blah blah
                
      was (Author: markrmil...@gmail.com):
    bq. DistributedMLTComponentTest is currently @Ignored

Yeah - for some reason it was faily constantly on freebsd, but passing on other 
OS's - I've never gotten back to it..

bq. it seems to only be verifying that the control client matches the distrib 
client 

Yup - it's about as basic a test as you can get. I'm not sure that it's useless 
though - there should be tests for non distributed mlt - so if distrib mlt 
matches it, that seems like it's doing something useful.

Basically, I tried to bang out the simplest thing I could that seemed to make 
distributed mlt possible - I had absolutely no need for it, but its a common 
user request. I tried to get someone that did have an interest in it to test it 
out at the time, but since no one responded, I figured it was an improvement 
over no support at all - if it didn't work in all cases, JIRA's would be filed, 
things would move forward, blah blah
                  
> Distributed MoreLikeThis fails with NullPointerException, shard query gives 
> EarlyTerminatingCollectorException
> --------------------------------------------------------------------------------------------------------------
>
>                 Key: SOLR-5125
>                 URL: https://issues.apache.org/jira/browse/SOLR-5125
>             Project: Solr
>          Issue Type: Bug
>          Components: MoreLikeThis
>    Affects Versions: 4.4
>            Reporter: Shawn Heisey
>             Fix For: 4.5, 5.0
>
>         Attachments: SOLR-5125.patch
>
>
> A distributed MoreLikeThis query that works perfectly on 4.2.1 is failing on 
> 4.4.0.  The original query returns a NullPointerException.  The Solr log 
> shows that the shard queries are throwing EarlyTerminatingCollectorException. 
>  Full details to follow in the comments.

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