Child query error when using _score script in nested aggregation
#35985
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This issue looks related: #28478 |
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The nested agg can defer the collection of children if it is nested under another aggregation. In such case accessing the score in the children aggregation throws an error because the scorer has already advanced to the next parent. This change fixes this error by caching the score of the parent in the nested aggregation. Children aggregations that work on nested documents will be able to access the _score. Also note that the _score in this case is always the parent's score, there is no way to retrieve the score of a nested docs in aggregations. Closes elastic#35985 Closes elastic#34555
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The nested agg can defer the collection of children if it is nested under another aggregation. In such case accessing the score in the children aggregation throws an error because the scorer has already advanced to the next parent. This change fixes this error by caching the score of the parent in the nested aggregation. Children aggregations that work on nested documents will be able to access the _score. Also note that the _score in this case is always the parent's score, there is no way to retrieve the score of a nested docs in aggregations. Closes #35985 Closes #34555
jimczi
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The nested agg can defer the collection of children if it is nested under another aggregation. In such case accessing the score in the children aggregation throws an error because the scorer has already advanced to the next parent. This change fixes this error by caching the score of the parent in the nested aggregation. Children aggregations that work on nested documents will be able to access the _score. Also note that the _score in this case is always the parent's score, there is no way to retrieve the score of a nested docs in aggregations. Closes #35985 Closes #34555
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Please see my self contained reproduction repository here.
I get an error when trying to run a query that seems reasonable to me. I'm able to avoid the error by setting size to 1.
Elasticsearch version:
6.4.2,6.5.1and7.0.0-alpha1Plugins installed: None
JVM version: I'm running the official elastic docker image
OS version: I'm running the official elastic docker image
Description of the problem including expected versus actual behavior:
Steps to reproduce:
Please see my self contained reproduction repository here. It contains all the steps.
Here's the query used in the reproduction:
{ "size": 0, "query": { "nested": { "query": { "match": { "dimension_filter_nested.name": { "query": "Meine produktkategorie wellendurchmesser" } } }, "path": "dimension_filter_nested" } }, "aggregations": { "my-agg-1": { "filter": { "terms": { "taxonomy.raw": ["/Meine produktkategorie"] } }, "aggregations": { "my-agg-2": { "nested": { "path": "dimension_filter_nested" }, "aggregations": { "my-agg-3": { "terms": { "field": "dimension_filter_nested.name.raw", "size": 10, "order": [{ "max_score": "desc" }, { "_key": "asc" }] }, "aggregations": { "max_score": { "max": { "script": { "source": "_score", "lang": "painless" } } } } } } } } } } }The error (
7.0.0-alpha1):{ "error" : { "root_cause" : [ { "type" : "script_exception", "reason" : "runtime error", "script_stack" : [ "org.apache.lucene.search.join.ToParentBlockJoinQuery$BlockJoinScorer.setScoreAndFreq(ToParentBlockJoinQuery.java:349)", "org.apache.lucene.search.join.ToParentBlockJoinQuery$BlockJoinScorer.score(ToParentBlockJoinQuery.java:309)", "org.apache.lucene.search.ConjunctionScorer.score(ConjunctionScorer.java:59)", "org.apache.lucene.search.FilterScorable.score(FilterScorable.java:46)", "org.elasticsearch.script.AggregationScript.get_score(AggregationScript.java:124)", "<<< unknown portion of script >>>" ], "script" : "_score", "lang" : "painless" } ], "type" : "search_phase_execution_exception", "reason" : "all shards failed", "phase" : "query", "grouped" : true, "failed_shards" : [ { "shard" : 0, "index" : "integration_test_index_de", "node" : "VmWbmOc3SbSLmb8LNQml0A", "reason" : { "type" : "script_exception", "reason" : "runtime error", "script_stack" : [ "org.apache.lucene.search.join.ToParentBlockJoinQuery$BlockJoinScorer.setScoreAndFreq(ToParentBlockJoinQuery.java:349)", "org.apache.lucene.search.join.ToParentBlockJoinQuery$BlockJoinScorer.score(ToParentBlockJoinQuery.java:309)", "org.apache.lucene.search.ConjunctionScorer.score(ConjunctionScorer.java:59)", "org.apache.lucene.search.FilterScorable.score(FilterScorable.java:46)", "org.elasticsearch.script.AggregationScript.get_score(AggregationScript.java:124)", "<<< unknown portion of script >>>" ], "script" : "_score", "lang" : "painless", "caused_by" : { "type" : "illegal_state_exception", "reason" : "Child query must not match same docs with parent filter. Combine them as must clauses (+) to find a problem doc. docId=2147483647, class org.apache.lucene.search.TermScorer" } } } ] }, "status" : 400 }The text was updated successfully, but these errors were encountered: