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https://issues.apache.org/jira/browse/SOLR-9495?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15480425#comment-15480425
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Gus Heck commented on SOLR-9495:
--------------------------------

Patch provides an error message like: 

{code}{"result-set":{"docs":[
{"EXCEPTION":"Invalid sort spec:id","EOF":true}]}}{code}

> AIOBE with confusing message for incomplete sort spec in Streaming Expression
> -----------------------------------------------------------------------------
>
>                 Key: SOLR-9495
>                 URL: https://issues.apache.org/jira/browse/SOLR-9495
>             Project: Solr
>          Issue Type: Bug
>      Security Level: Public(Default Security Level. Issues are Public) 
>          Components: search
>    Affects Versions: 6.2
>         Environment: 6.2.0_RC1
>            Reporter: Gus Heck
>            Priority: Minor
>         Attachments: SOLR-9495.patch
>
>
> I was thinking of using streaming expressions for something, and started to 
> play around with it, but I made a bonehaded mistake, and got an error that's 
> pretty confusing: 
> {code}{"result-set":{"docs":[
> {"EXCEPTION":"1","EOF":true}]}}{code}
> This turns out to be due to: 
> {code}
>       at 
> org.eclipse.jetty.util.thread.QueuedThreadPool$3.run(QueuedThreadPool.java:572)
>       at java.lang.Thread.run(Thread.java:745)
> Caused by: java.lang.reflect.InvocationTargetException
>       at sun.reflect.NativeConstructorAccessorImpl.newInstance0(Native Method)
>       at 
> sun.reflect.NativeConstructorAccessorImpl.newInstance(NativeConstructorAccessorImpl.java:62)
>       at 
> sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45)
>       at java.lang.reflect.Constructor.newInstance(Constructor.java:423)
>       at 
> org.apache.solr.client.solrj.io.stream.expr.StreamFactory.createInstance(StreamFactory.java:316)
>       ... 33 more
> Caused by: java.lang.ArrayIndexOutOfBoundsException: 1
>       at 
> org.apache.solr.client.solrj.io.stream.CloudSolrStream.parseComp(CloudSolrStream.java:334)
>       at 
> org.apache.solr.client.solrj.io.stream.CloudSolrStream.init(CloudSolrStream.java:274)
>       at 
> org.apache.solr.client.solrj.io.stream.CloudSolrStream.<init>(CloudSolrStream.java:181)
>       ... 38 more
> {code}
> The mistake I made was omitting a direction from the sort spec. Attaching 
> trivial patch to provide a better error message...



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