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Use the global doc id to generate a random score (#33599) 

This commit changes the random_score function to use the global docID of the document
rather than the segment docID to generate random scores. As a result documents that have
the same segment docID within the shard will generate different scores.
This commit is contained in:
Jim Ferenczi 2018-09-19 09:28:38 +02:00 committed by GitHub
parent c4261bab44
commit 61e1df0274
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1 changed files with 1 additions and 1 deletions
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server/src/main/java/org/elasticsearch/common/lucene/search/function/RandomScoreFunction.java
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@ -70,7 +70,7 @@ public class RandomScoreFunction extends ScoreFunction {
public double score(int docId, float subQueryScore) throws IOException {
int hash;
if (values == null) {
hash = BitMixer.mix(docId, saltedSeed);
hash = BitMixer.mix(ctx.docBase + docId, saltedSeed);
} else if (values.advanceExact(docId)) {
hash = StringHelper.murmurhash3_x86_32(values.nextValue(), saltedSeed);
} else {