I guess that I caused by shard which return renamed field.

following code is source code of solr 4.6
====================================================================
===================================
986:    if ((sreq.purpose & ShardRequest.PURPOSE_GET_FIELDS) != 0) {
987:      boolean returnScores = (rb.getFieldFlags() &
SolrIndexSearcher.GET_SCORES) != 0;
988:
989:      assert(sreq.responses.size() == 1);
990:      ShardResponse srsp = sreq.responses.get(0);
991:      SolrDocumentList docs =
(SolrDocumentList)srsp.getSolrResponse().getResponse().get("response");
992:
993:      String keyFieldName =
rb.req.getSchema().getUniqueKeyField().getName();
994:      boolean removeKeyField =
!rb.rsp.getReturnFields().wantsField(keyFieldName);
995:
996:      for (SolrDocument doc : docs) {
997:        Object id = doc.getFieldValue(keyFieldName);
998:        ShardDoc sdoc = rb.resultIds.get(id.toString());
====================================================================================================

If each shard return renamed field name instead of keyFieldName(UniqueKey),
"id" of 998 line could be null. Because the doc of 996 line wouldn't have
"keyFieldName"


So if you are urgent or you can not wait for patch, you can add unique
field like this.
eg) http://<host_name>/solr/<collection_name>/select?q=dress&fl=a1:p1&fl=p1




On Sat, Nov 15, 2014 at 11:26 PM, Garth Grimm <
garthgr...@averyranchconsulting.com> wrote:

> https://issues.apache.org/jira/browse/SOLR-6744 created.
>
> And hopefully correctly, since that’s my first.
> On Nov 15, 2014, at 9:12 AM, Garth Grimm <
> garthgr...@averyranchconsulting.com<mailto:
> garthgr...@averyranchconsulting.com>> wrote:
>
> I see the same issue on 4.10.1.
>
> I’ll open a JIRA if I don’t see one.
>
> I guess the best immediate work around is to copy the unique field, and
> use that field for renaming?
> On Nov 15, 2014, at 3:18 AM, Suchi Amalapurapu <su...@bloomreach.com
> <mailto:su...@bloomreach.com>> wrote:
>
> Solr version:4.6.1
>
> On Sat, Nov 15, 2014 at 12:24 PM, Jeon Woosung <jeonwoos...@gmail.com
> <mailto:jeonwoos...@gmail.com>>
> wrote:
>
> Could you let me know version of the solr?
>
> On Sat, Nov 15, 2014 at 5:05 AM, Suchi Amalapurapu <su...@bloomreach.com
> <mailto:su...@bloomreach.com>>
> wrote:
>
> Hi
> Getting the following exception when using fl renaming with unique key in
> the schema.
> http://<host_name>/solr/<collection_name>/select?q=dress&fl=a1:p1
>
> where p1 is the unique key for <collection_name>
> For collections with single shard, this works flawlessly but results in
> the
> following exception in case of multiple shards.
>
> How do we fix this? Stack trace below.
> Suchi
>
> error": {"trace": "java.lang.NullPointerException\n\tat
>
>
>
> org.apache.solr.handler.component.QueryComponent.returnFields(QueryComponent.java:998)\n\tat
>
>
>
> org.apache.solr.handler.component.QueryComponent.handleRegularResponses(QueryComponent.java:653)\n\tat
>
>
>
> org.apache.solr.handler.component.QueryComponent.handleResponses(QueryComponent.java:628)\n\tat
>
>
>
> org.apache.solr.handler.component.SearchHandler.handleRequestBody(SearchHandler.java:311)\n\tat
>
>
>
> org.apache.solr.handler.RequestHandlerBase.handleRequest(RequestHandlerBase.java:135)\n\tat
> org.apache.solr.core.SolrCore.execute(SolrCore.java:1859)\n\tat
>
>
>
> org.apache.solr.servlet.SolrDispatchFilter.execute(SolrDispatchFilter.java:721)\n\tat
>
>
>
> org.apache.solr.servlet.SolrDispatchFilter.doFilter(SolrDispatchFilter.java:417)\n\tat
>
>
>
> org.apache.solr.servlet.SolrDispatchFilter.doFilter(SolrDispatchFilter.java:201)\n\tat
>
>
>
> org.eclipse.jetty.servlet.ServletHandler$CachedChain.doFilter(ServletHandler.java:1419)\n\tat
>
>
>
> org.eclipse.jetty.servlet.ServletHandler.doHandle(ServletHandler.java:455)\n\tat
>
>
>
> org.eclipse.jetty.server.handler.ScopedHandler.handle(ScopedHandler.java:137)\n\tat
>
>
>
> org.eclipse.jetty.security.SecurityHandler.handle(SecurityHandler.java:557)\n\tat
>
>
>
> org.eclipse.jetty.server.session.SessionHandler.doHandle(SessionHandler.java:231)\n\tat
>
>
>
> org.eclipse.jetty.server.handler.ContextHandler.doHandle(ContextHandler.java:1075)\n\tat
>
>
>
> org.eclipse.jetty.servlet.ServletHandler.doScope(ServletHandler.java:384)\n\tat
>
>
>
> org.eclipse.jetty.server.session.SessionHandler.doScope(SessionHandler.java:193)\n\tat
>
>
>
> org.eclipse.jetty.server.handler.ContextHandler.doScope(ContextHandler.java:1009)\n\tat
>
>
>
> org.eclipse.jetty.server.handler.ScopedHandler.handle(ScopedHandler.java:135)\n\tat
>
>
>
> org.eclipse.jetty.server.handler.ContextHandlerCollection.handle(ContextHandlerCollection.java:255)\n\tat
>
>
>
> org.eclipse.jetty.server.handler.HandlerCollection.handle(HandlerCollection.java:154)\n\tat
>
>
>
> org.eclipse.jetty.server.handler.HandlerWrapper.handle(HandlerWrapper.java:116)\n\tat
> org.eclipse.jetty.server.Server.handle(Server.java:368)\n\tat
>
>
>
> org.eclipse.jetty.server.AbstractHttpConnection.handleRequest(AbstractHttpConnection.java:489)\n\tat
>
>
>
> org.eclipse.jetty.server.BlockingHttpConnection.handleRequest(BlockingHttpConnection.java:53)\n\tat
>
>
>
> org.eclipse.jetty.server.AbstractHttpConnection.headerComplete(AbstractHttpConnection.java:942)\n\tat
>
>
>
> org.eclipse.jetty.server.AbstractHttpConnection$RequestHandler.headerComplete(AbstractHttpConnection.java:1004)\n\tat
> org.eclipse.jetty.http.HttpParser.parseNext(HttpParser.java:640)\n\tat
>
> org.eclipse.jetty.http.HttpParser.parseAvailable(HttpParser.java:235)\n\tat
>
>
>
> org.eclipse.jetty.server.BlockingHttpConnection.handle(BlockingHttpConnection.java:72)\n\tat
>
>
>
> org.eclipse.jetty.server.bio.SocketConnector$ConnectorEndPoint.run(SocketConnector.java:264)\n\tat
>
>
>
> org.eclipse.jetty.util.thread.QueuedThreadPool.runJob(QueuedThreadPool.java:608)\n\tat
>
>
>
> org.eclipse.jetty.util.thread.QueuedThreadPool$3.run(QueuedThreadPool.java:543)\n\tat
> java.lang.Thread.run(Thread.java:662)\n","code": 500
>
>
>
>
> --
> *God bless U*
>
>
>
>


-- 
*God bless U*

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