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https://issues.apache.org/jira/browse/SOLR-6203?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15709543#comment-15709543
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Judith Silverman edited comment on SOLR-6203 at 12/1/16 12:33 AM:
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Thanks for the update, Christine. I am happy to pursue your incremental
approach. I have made a patch to your branch in which I uncommented a couple
of your signature changes and modified calls to the affected methods to use the
new signatures. I also took this opportunity to start standardizing field and
method names related to the field variously known throughout the codebase as
"sortWithinGroup" and "withinGroupSort". The latter fits better with related
field and method names, and since we are already deprecating
GroupingSpecification's accessors for Sorts in favor of accessors of
SortSpecs, this seems to me like a good time to make the change. I renamed the
new public accessors and also renamed private fields in all the files I was
already modifying for this commit. If you approve of this change, I will
rename private fields in other files. In the meantime, I will keep going in
the direction you indicated.
Thanks,
Judith
was (Author: judith):
Thanks for the update, Christine. I am happy to pursue your
incremental approach. I have made a patch to your branch in which I
uncommented your signature changes and modified calls to the affected
methods to use the new signatures. I also took this opportunity to
start standardizing field and method names related to the field
variously known throughout the codebase as "sortWithinGroup" and
"withinGroupSort". The latter fits better with related field and
method names, and since we are already deprecating
GroupingSpecification's accessors for Sorts in favor of accessors of
SortSpecs, this seems to me like a good time to make the change. I
renamed the new public accessors and also renamed private fields in
all the files I was already modifying for this commit. If you approve
of this change, I will rename private fields in other files. In the
meantime, I will start fleshing out utility functions as you indicated.
Thanks,
Judith
> cast exception while searching with sort function and result grouping
> ---------------------------------------------------------------------
>
> Key: SOLR-6203
> URL: https://issues.apache.org/jira/browse/SOLR-6203
> Project: Solr
> Issue Type: Bug
> Components: search
> Affects Versions: 4.7, 4.8
> Reporter: Nate Dire
> Assignee: Christine Poerschke
> Attachments: README, SOLR-6203-unittest.patch,
> SOLR-6203-unittest.patch, SOLR-6203.patch, SOLR-6203.patch
>
>
> After upgrading from 4.5.1 to 4.7+, a schema including a {{"*"}} dynamic
> field as text gets a cast exception when using a sort function and result
> grouping.
> Repro (with example config):
> # Add {{"*"}} dynamic field as a {{TextField}}, eg:
> {noformat}
> <dynamicField name="*" type="text_general" multiValued="true" />
> {noformat}
> # Create sharded collection
> {noformat}
> curl
> 'http://localhost:8983/solr/admin/collections?action=CREATE&name=test&numShards=2&maxShardsPerNode=2'
> {noformat}
> # Add example docs (query must have some results)
> # Submit query which sorts on a function result and uses result grouping:
> {noformat}
> {
> "responseHeader": {
> "status": 500,
> "QTime": 50,
> "params": {
> "sort": "sqrt(popularity) desc",
> "indent": "true",
> "q": "*:*",
> "_": "1403709010008",
> "group.field": "manu",
> "group": "true",
> "wt": "json"
> }
> },
> "error": {
> "msg": "java.lang.Double cannot be cast to
> org.apache.lucene.util.BytesRef",
> "code": 500
> }
> }
> {noformat}
> Source exception from log:
> {noformat}
> ERROR - 2014-06-25 08:10:10.055; org.apache.solr.common.SolrException;
> java.lang.ClassCastException: java.lang.Double cannot be cast to
> org.apache.lucene.util.BytesRef
> at
> org.apache.solr.schema.FieldType.marshalStringSortValue(FieldType.java:981)
> at org.apache.solr.schema.TextField.marshalSortValue(TextField.java:176)
> at
> org.apache.solr.search.grouping.distributed.shardresultserializer.SearchGroupsResultTransformer.serializeSearchGroup(SearchGroupsResultTransformer.java:125)
> at
> org.apache.solr.search.grouping.distributed.shardresultserializer.SearchGroupsResultTransformer.transform(SearchGroupsResultTransformer.java:65)
> at
> org.apache.solr.search.grouping.distributed.shardresultserializer.SearchGroupsResultTransformer.transform(SearchGroupsResultTransformer.java:43)
> at
> org.apache.solr.search.grouping.CommandHandler.processResult(CommandHandler.java:193)
> at
> org.apache.solr.handler.component.QueryComponent.process(QueryComponent.java:340)
> at
> org.apache.solr.handler.component.SearchHandler.handleRequestBody(SearchHandler.java:218)
> at
> org.apache.solr.handler.RequestHandlerBase.handleRequest(RequestHandlerBase.java:135)
> ...
> {noformat}
> It looks like {{serializeSearchGroup}} is matching the sort expression as the
> {{"*"}} dynamic field, which is a TextField in the repro.
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