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https://issues.apache.org/jira/browse/SOLR-12185?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16424936#comment-16424936
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Shawn Heisey commented on SOLR-12185:
-------------------------------------
Changing the multiValued setting on a field with existing data that includes
docValues requires getting rid of the entire index and building it again.
This behavior comes from Lucene, not Solr. Lucene saves certain information
about the docValues into the index, and once it's there, it can't be changed.
There's nothing we can do in Solr to fix this behavior.
> Can't change Single Valued field to Multi Valued even by deleting/readding
> --------------------------------------------------------------------------
>
> Key: SOLR-12185
> URL: https://issues.apache.org/jira/browse/SOLR-12185
> Project: Solr
> Issue Type: Bug
> Security Level: Public(Default Security Level. Issues are Public)
> Components: Schema and Analysis
> Affects Versions: 7.1
> Reporter: Cetra Free
> Priority: Major
>
> Changing a single-valued field to multi-valued field with doc values breaks
> things. This doesn't matter if you change the field or do a complete delete
> and re-add of the field. The only way I have found to "fix" this is to
> delete the entire core from disk and re-add it.
> h2. Steps to replicate:
> * Create a field, make it single valued with doc values
> * Index a couple of docs
> * Delete the field
> * Add the field again with the same name, but change it to multiValued
> * Try indexing a couple of docs
> h2. Expected result:
> The documents are indexed correctly and there are no issues
> h2. Actual outcome:
> The documents refuse to be indexed and you see this in the logs:
> {code:java}
> org.apache.solr.common.SolrException: Exception writing document id
> 6a3226c8-c904-40d7-aecb-76c3515db7b8 to the index; possible analysis error:
> cannot change DocValues type from SORTED to SORTED_SET for field
> "example_field"
> at
> org.apache.solr.update.DirectUpdateHandler2.addDoc(DirectUpdateHandler2.java:221)
> at
> org.apache.solr.update.processor.RunUpdateProcessor.processAdd(RunUpdateProcessorFactory.java:67)
> at
> org.apache.solr.update.processor.UpdateRequestProcessor.processAdd(UpdateRequestProcessor.java:55)
> at
> org.apache.solr.update.processor.DistributedUpdateProcessor.doLocalAdd(DistributedUpdateProcessor.java:991)
> at
> org.apache.solr.update.processor.DistributedUpdateProcessor.versionAdd(DistributedUpdateProcessor.java:1207)
> at
> org.apache.solr.update.processor.DistributedUpdateProcessor.processAdd(DistributedUpdateProcessor.java:753)
> at
> org.apache.solr.update.processor.LogUpdateProcessorFactory$LogUpdateProcessor.processAdd(LogUpdateProcessorFactory.java:103)
> at
> org.apache.solr.update.processor.UpdateRequestProcessor.processAdd(UpdateRequestProcessor.java:55)
> at
> org.apache.solr.update.processor.AddSchemaFieldsUpdateProcessorFactory$AddSchemaFieldsUpdateProcessor.processAdd(AddSchemaFieldsUpdateProcessorFactory.java:474)
> at
> org.apache.solr.update.processor.UpdateRequestProcessor.processAdd(UpdateRequestProcessor.java:55)
> at
> org.apache.solr.update.processor.FieldMutatingUpdateProcessor.processAdd(FieldMutatingUpdateProcessor.java:118)
> at
> org.apache.solr.update.processor.UpdateRequestProcessor.processAdd(UpdateRequestProcessor.java:55)
> at
> org.apache.solr.update.processor.FieldMutatingUpdateProcessor.processAdd(FieldMutatingUpdateProcessor.java:118)
> at
> org.apache.solr.update.processor.UpdateRequestProcessor.processAdd(UpdateRequestProcessor.java:55)
> at
> org.apache.solr.update.processor.FieldMutatingUpdateProcessor.processAdd(FieldMutatingUpdateProcessor.java:118)
> at
> org.apache.solr.update.processor.UpdateRequestProcessor.processAdd(UpdateRequestProcessor.java:55)
> at
> org.apache.solr.update.processor.FieldMutatingUpdateProcessor.processAdd(FieldMutatingUpdateProcessor.java:118)
> at
> org.apache.solr.update.processor.UpdateRequestProcessor.processAdd(UpdateRequestProcessor.java:55)
> at
> org.apache.solr.update.processor.FieldNameMutatingUpdateProcessorFactory$1.processAdd(FieldNameMutatingUpdateProcessorFactory.java:74)
> at
> org.apache.solr.update.processor.UpdateRequestProcessor.processAdd(UpdateRequestProcessor.java:55)
> at
> org.apache.solr.update.processor.FieldMutatingUpdateProcessor.processAdd(FieldMutatingUpdateProcessor.java:118)
> at
> org.apache.solr.update.processor.UpdateRequestProcessor.processAdd(UpdateRequestProcessor.java:55)
> at
> org.apache.solr.update.processor.AbstractDefaultValueUpdateProcessorFactory$DefaultValueUpdateProcessor.processAdd(AbstractDefaultValueUpdateProcessorFactory.java:91)
> at
> org.apache.solr.handler.dataimport.SolrWriter.upload(SolrWriter.java:80)
> at
> org.apache.solr.handler.dataimport.DataImportHandler$1.upload(DataImportHandler.java:257)
> at
> org.apache.solr.handler.dataimport.DocBuilder.buildDocument(DocBuilder.java:527)
> at
> org.apache.solr.handler.dataimport.DocBuilder.buildDocument(DocBuilder.java:415)
> at
> org.apache.solr.handler.dataimport.DocBuilder.doFullDump(DocBuilder.java:330)
> at
> org.apache.solr.handler.dataimport.DocBuilder.execute(DocBuilder.java:233)
> at
> org.apache.solr.handler.dataimport.DataImporter.doFullImport(DataImporter.java:415)
> at
> org.apache.solr.handler.dataimport.DataImporter.runCmd(DataImporter.java:474)
> at
> org.apache.solr.handler.dataimport.DataImporter.lambda$runAsync$0(DataImporter.java:457)
> at java.lang.Thread.run(Thread.java:748)
> Caused by: java.lang.IllegalArgumentException: cannot change DocValues type
> from SORTED to SORTED_SET for field "example_field"
> at
> org.apache.lucene.index.FieldInfos$FieldNumbers.verifyConsistent(FieldInfos.java:293)
> at
> org.apache.lucene.index.FieldInfos$FieldNumbers.setDocValuesType(FieldInfos.java:341)
> at
> org.apache.lucene.index.DefaultIndexingChain.indexDocValue(DefaultIndexingChain.java:524)
> at
> org.apache.lucene.index.DefaultIndexingChain.processField(DefaultIndexingChain.java:466)
> at
> org.apache.lucene.index.DefaultIndexingChain.processDocument(DefaultIndexingChain.java:392)
> at
> org.apache.lucene.index.DocumentsWriterPerThread.updateDocument(DocumentsWriterPerThread.java:239)
> at
> org.apache.lucene.index.DocumentsWriter.updateDocument(DocumentsWriter.java:481)
> at
> org.apache.lucene.index.IndexWriter.updateDocument(IndexWriter.java:1717)
> at
> org.apache.solr.update.DirectUpdateHandler2.updateDocument(DirectUpdateHandler2.java:960)
> at
> org.apache.solr.update.DirectUpdateHandler2.updateDocOrDocValues(DirectUpdateHandler2.java:949)
> at
> org.apache.solr.update.DirectUpdateHandler2.doNormalUpdate(DirectUpdateHandler2.java:329)
> at
> org.apache.solr.update.DirectUpdateHandler2.addDoc0(DirectUpdateHandler2.java:266)
> at
> org.apache.solr.update.DirectUpdateHandler2.addDoc(DirectUpdateHandler2.java:216)
> ... 32 more{code}
>
>
>
>
>
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