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From "Erick Erickson (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (SOLR-11620) Occasional NullPointerException in CloudSolrClient
Date Thu, 09 Nov 2017 14:39:00 GMT

    [ https://issues.apache.org/jira/browse/SOLR-11620?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16245745#comment-16245745
] 

Erick Erickson commented on SOLR-11620:
---------------------------------------

Great info Rob, thanks! I'm not quite sure what the right fix here is, but this is great info
for someone who is.

> Occasional NullPointerException in CloudSolrClient 
> ---------------------------------------------------
>
>                 Key: SOLR-11620
>                 URL: https://issues.apache.org/jira/browse/SOLR-11620
>             Project: Solr
>          Issue Type: Bug
>      Security Level: Public(Default Security Level. Issues are Public) 
>          Components: SolrJ
>    Affects Versions: 6.6.1
>            Reporter: Rob Trickey
>            Priority: Minor
>
> When sending document updates to Solr, we occasionally see the following error:
> java.lang.NullPointerException
> 	at org.apache.solr.client.solrj.impl.CloudSolrClient.requestWithRetryOnStaleState(CloudSolrClient.java:1182)
> 	at org.apache.solr.client.solrj.impl.CloudSolrClient.request(CloudSolrClient.java:1073)
> 	at org.apache.solr.client.solrj.SolrRequest.process(SolrRequest.java:160)
> 	at org.apache.solr.client.solrj.SolrClient.add(SolrClient.java:173)
> 	at org.apache.solr.client.solrj.SolrClient.add(SolrClient.java:138)
> 	at org.apache.solr.client.solrj.SolrClient.add(SolrClient.java:152)
> Looking at the code, there is a lack of null check on requestedCollections around the
for loop
> for (DocCollection ext : requestedCollections) 
> which causes the error. Wrapping this loop with if(requestedCollections != null) would
solve the problem.



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