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Posted to dev@lucene.apache.org by "Mikhail Khludnev (JIRA)" <ji...@apache.org> on 2014/08/11 08:35:13 UTC
[jira] [Commented] (SOLR-6357) Using query time Join in
deleteByQuery throws ClassCastException
[ https://issues.apache.org/jira/browse/SOLR-6357?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14092504#comment-14092504 ]
Mikhail Khludnev commented on SOLR-6357:
----------------------------------------
I'm not sure but it might be challenging to use purely Solr query \{!join ..\} deep inside of Lucene core, where deleteQuery is handled. Try to use native Lucene query-time join SOLR-6234.
> Using query time Join in deleteByQuery throws ClassCastException
> ----------------------------------------------------------------
>
> Key: SOLR-6357
> URL: https://issues.apache.org/jira/browse/SOLR-6357
> Project: Solr
> Issue Type: Bug
> Components: query parsers
> Affects Versions: 4.9
> Reporter: Arcadius Ahouansou
>
> Consider the following input document where we have:
> - 1 Samsung mobile phone and
> - 2 manufactures: Apple and Samsung.
> {code}
> [
> {
> "id":"galaxy note ii",
> "cat":"product",
> "manu_s":"samsung"
> },
> {
> "id":"samsung",
> "cat":"manufacturer",
> "name":"Samsung Electronics"
> },
> {
> "id":"apple",
> "cat":"manufacturer",
> "name":"Apple Inc"
> }
> ]
> {code}
> My objective is to delete from the default index all manufacturers not having any product in the index.
> After indexing ( curl 'http://localhost:8983/solr/update?commit=true' -H "Content-Type: text/json" --data-binary @delete-by-join-query.json )
> I went to
> {code}http://localhost:8983/solr/select?q=cat:manufacturer -{!join from=manu_s to=id}cat:product
> {code}
> and I could see only Apple, the only manufacturer not having any product in the index.
> However, when I use that same query for deletion:
> {code}
> http://localhost:8983/solr/update?commit=true&stream.body=<delete><query>cat:manufacturer -{!join from=manu_s to=id}cat:product</query></delete>
> {code}
> I get
> {code}
> java.lang.ClassCastException: org.apache.lucene.search.IndexSearcher cannot be cast to org.apache.solr.search.SolrIndexSearcher
> at org.apache.solr.search.JoinQuery.createWeight(JoinQParserPlugin.java:143)
> at org.apache.lucene.search.BooleanQuery$BooleanWeight.<init>(BooleanQuery.java:185)
> at org.apache.lucene.search.BooleanQuery.createWeight(BooleanQuery.java:526)
> at org.apache.lucene.search.BooleanQuery$BooleanWeight.<init>(BooleanQuery.java:185)
> at org.apache.lucene.search.BooleanQuery.createWeight(BooleanQuery.java:526)
> at org.apache.lucene.search.IndexSearcher.createNormalizedWeight(IndexSearcher.java:684)
> at org.apache.lucene.search.QueryWrapperFilter.getDocIdSet(QueryWrapperFilter.java:55)
> at org.apache.lucene.index.BufferedUpdatesStream.applyQueryDeletes(BufferedUpdatesStream.java:552)
> at org.apache.lucene.index.BufferedUpdatesStream.applyDeletesAndUpdates(BufferedUpdatesStream.java:287)
> at
> {code}
> This seems to be a bug.
> Looking at the source code, the exception is happening in {code}
> @Override
> public Weight createWeight(IndexSearcher searcher) throws IOException {
> return new JoinQueryWeight((SolrIndexSearcher)searcher);
> }
> {code}
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