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https://issues.apache.org/jira/browse/SOLR-4285?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14613485#comment-14613485
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Vishnu Mishra commented on SOLR-4285:
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I am using solr 4.10.3 and facing the same issue with distributed search.
> Solr mangles distributed query parameters
> -----------------------------------------
>
> Key: SOLR-4285
> URL: https://issues.apache.org/jira/browse/SOLR-4285
> Project: Solr
> Issue Type: Bug
> Components: SolrCloud
> Affects Versions: Trunk
> Environment: trunk check outs between august 2012 and january 2013
> using Tomcat6 and Java6.
> Reporter: Markus Jelsma
> Priority: Critical
> Fix For: Trunk
>
>
> Using Siege to load test a cluster via a load balancer we sometimes see the
> forwarded query strings being mangled and causing an error. The problem
> mainly manifests in a function query parameter and the host__terms parameter.
> It doesn't seem to be an issue of concurrency because it also happens when
> load testing with a single thread.
> function query parameter causing an error:
> {code}
> 2012-12-12 11:11:45,527 ERROR [solr.core.SolrCore] - [http-8080-exec-16] - :
> org.apache.solr.common.SolrException: org.apache.solr.search.SyntaxError:
> Expected ',' at position 55 in
> 'if(exists(date),max(recip(ms(NOW/DAY,date),3.17e-8,143
> .9),.8),.7)'
> at
> org.apache.solr.handler.component.QueryComponent.prepare(QueryComponent.java:154)
> ...
> at
> java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:908)
> at java.lang.Thread.run(Thread.java:662)
> Caused by: org.apache.solr.search.SyntaxError: Expected ',' at position 55 in
> 'if(exists(date),max(recip(ms(NOW/DAY,date),3.17e-8,143
> .9),.8),.7)'
> {code}
> The above error is somewhat older but for some reason the comma in the
> edismax boost parameter is replaced by a newline.
> host__terms parameter causing an error:
> {code}
> 2013-01-08 12:09:08,902 ERROR [handler.component.FacetComponent] -
> [http-8080-exec-13] - : Unexpected term returned for facet refining. key=host
> term='dafenwout.domain.ext^daisybel.domain.ext'
> request
> params=spellcheck=false&facet=true&sort=score+desc.....&facet.field=%7B%21terms%3D%24host__terms+ex%3Dhost%7Dhost&host__terms=....daanjobbe.domain.ext%2Cdaank.domain.ext%2Cdafenwout.domain.ext%2Cdaisybel.domain.ext%2Cdaniellehooijmans.domain.ext...koenleurs.domain.ext
> toRefine=[Ljava.util.List;@5b48447f
>
> response={....daanjobbe.domain.ext=0,daank.domain.ext=0,dafenwout.domain.ext^daisybel.domain.ext=0,daniellehooijmans.domain.ext=0...koenleurs.domain.ext=0}
> {code}
> I've shortened the above error significantly, it was about 20kB. It's the
> carret symbol causing the issue. For some reason the logged request does not
> contain the carret symbol.
> Both issues are very elusive and hard to reproduce but in our case will
> appear if we send queries long enough, 50k, 100k queries.
> Original thread:
> http://lucene.472066.n3.nabble.com/SolrCloud-breaks-distributed-query-strings-td4026314.html
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