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https://issues.apache.org/jira/browse/SOLR-6744?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Mike Drob updated SOLR-6744:
----------------------------
Attachment: SOLR-6744.patch
[~tomasflobbe] - I'll update the test to check for no id field returned.
Moving the check outside of the loop helped me to catch another bug where we
could rename id to something else, and then another field to id and Solr would
still be looking in the wrong place.
There are some comments in {{SolrReturnFields}} that indicate multiple renames
might be possible, like id->foo->bar. I wasn't able to figure out the syntax
for making that happen but that might be something worth investigating in a
follow-on issue. Seems esoteric enough to safely skip for now.
> fl renaming / alias of uniqueKey field generates null pointer exception in
> SolrCloud configuration
> --------------------------------------------------------------------------------------------------
>
> Key: SOLR-6744
> URL: https://issues.apache.org/jira/browse/SOLR-6744
> Project: Solr
> Issue Type: Bug
> Components: SolrCloud
> Affects Versions: 4.10.1
> Environment: Multiple replicas on SolrCloud config. This specific
> example with 4 shard, 3 replica per shard config. This bug does NOT exist
> when query is handled by single core.
> Reporter: Garth Grimm
> Priority: Minor
> Attachments: SOLR-6744.patch, SOLR-6744.patch
>
>
> If trying to rename the uniqueKey field using 'fl' in a distributed query
> (ie: SolrCloud config), an NPE is thrown.
> The workarround is to redundently request the uniqueKey field, once with the
> desired alias, and once with the original name
> Example...
> http://localhost:8983/solr/cloudcollection/select?q=*%3A*&wt=xml&indent=true&fl=key:id
> Work around:
> http://localhost:8983/solr/cloudcollection/select?q=*%3A*&wt=xml&indent=true&fl=key:id&fl=id
> Error w/o work around...
> {code}
> <response><lst name="responseHeader"><int name="status">500</int><int
> name="QTime">11</int><lst name="params"><str name="q">*:*</str><str
> name="indent">true</str><str name="fl">key:id</str><str
> name="wt">xml</str></lst></lst><lst name="error"><str
> name="trace">java.lang.NullPointerException
> at
> org.apache.solr.handler.component.QueryComponent.returnFields(QueryComponent.java:1257)
> at
> org.apache.solr.handler.component.QueryComponent.handleRegularResponses(QueryComponent.java:720)
> at
> org.apache.solr.handler.component.QueryComponent.handleResponses(QueryComponent.java:695)
> at
> org.apache.solr.handler.component.SearchHandler.handleRequestBody(SearchHandler.java:324)
> at
> org.apache.solr.handler.RequestHandlerBase.handleRequest(RequestHandlerBase.java:135)
> at org.apache.solr.core.SolrCore.execute(SolrCore.java:1967)
> at
> org.apache.solr.servlet.SolrDispatchFilter.execute(SolrDispatchFilter.java:777)
> at
> org.apache.solr.servlet.SolrDispatchFilter.doFilter(SolrDispatchFilter.java:418)
> at
> org.apache.solr.servlet.SolrDispatchFilter.doFilter(SolrDispatchFilter.java:207)
> at
> org.eclipse.jetty.servlet.ServletHandler$CachedChain.doFilter(ServletHandler.java:1419)
> at
> org.eclipse.jetty.servlet.ServletHandler.doHandle(ServletHandler.java:455)
> at
> org.eclipse.jetty.server.handler.ScopedHandler.handle(ScopedHandler.java:137)
> at
> org.eclipse.jetty.security.SecurityHandler.handle(SecurityHandler.java:557)
> at
> org.eclipse.jetty.server.session.SessionHandler.doHandle(SessionHandler.java:231)
> at
> org.eclipse.jetty.server.handler.ContextHandler.doHandle(ContextHandler.java:1075)
> at
> org.eclipse.jetty.servlet.ServletHandler.doScope(ServletHandler.java:384)
> at
> org.eclipse.jetty.server.session.SessionHandler.doScope(SessionHandler.java:193)
> at
> org.eclipse.jetty.server.handler.ContextHandler.doScope(ContextHandler.java:1009)
> at
> org.eclipse.jetty.server.handler.ScopedHandler.handle(ScopedHandler.java:135)
> at
> org.eclipse.jetty.server.handler.ContextHandlerCollection.handle(ContextHandlerCollection.java:255)
> at
> org.eclipse.jetty.server.handler.HandlerCollection.handle(HandlerCollection.java:154)
> at
> org.eclipse.jetty.server.handler.HandlerWrapper.handle(HandlerWrapper.java:116)
> at org.eclipse.jetty.server.Server.handle(Server.java:368)
> at
> org.eclipse.jetty.server.AbstractHttpConnection.handleRequest(AbstractHttpConnection.java:489)
> at
> org.eclipse.jetty.server.BlockingHttpConnection.handleRequest(BlockingHttpConnection.java:53)
> at
> org.eclipse.jetty.server.AbstractHttpConnection.headerComplete(AbstractHttpConnection.java:942)
> at
> org.eclipse.jetty.server.AbstractHttpConnection$RequestHandler.headerComplete(AbstractHttpConnection.java:1004)
> at org.eclipse.jetty.http.HttpParser.parseNext(HttpParser.java:640)
> at org.eclipse.jetty.http.HttpParser.parseAvailable(HttpParser.java:235)
> at
> org.eclipse.jetty.server.BlockingHttpConnection.handle(BlockingHttpConnection.java:72)
> at
> org.eclipse.jetty.server.bio.SocketConnector$ConnectorEndPoint.run(SocketConnector.java:264)
> at
> org.eclipse.jetty.util.thread.QueuedThreadPool.runJob(QueuedThreadPool.java:608)
> at
> org.eclipse.jetty.util.thread.QueuedThreadPool$3.run(QueuedThreadPool.java:543)
> at java.lang.Thread.run(Thread.java:745)
> </str><int name="code">500</int></lst></response>
> {code}
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