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Fix searchafter high latency when after value is out of range for segment (#12334)

This commit is contained in:
Chaitanya Gohel 2023-05-31 22:07:53 +00:00 committed by GitHub
parent da36c24cb9
commit d44be24025
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GPG Key ID: 4AEE18F83AFDEB23
1 changed files with 15 additions and 11 deletions
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22
lucene/core/src/java/org/apache/lucene/search/comparators/NumericComparator.java
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@ -91,8 +91,8 @@ public abstract class NumericComparator<T extends Number> extends FieldComparato
// if skipping functionality should be enabled on this segment
private final boolean enableSkipping;
private final int maxDoc;
private final byte[] minValueAsBytes;
private final byte[] maxValueAsBytes;
private byte[] minValueAsBytes;
private byte[] maxValueAsBytes;
private DocIdSetIterator competitiveIterator;
private long iteratorCost = -1;
@ -128,16 +128,10 @@ public abstract class NumericComparator<T extends Number> extends FieldComparato
}
this.enableSkipping = true; // skipping is enabled when points are available
this.maxDoc = context.reader().maxDoc();
this.maxValueAsBytes =
reverse == false ? new byte[bytesCount] : topValueSet ? new byte[bytesCount] : null;
this.minValueAsBytes =
reverse ? new byte[bytesCount] : topValueSet ? new byte[bytesCount] : null;
this.competitiveIterator = DocIdSetIterator.all(maxDoc);
} else {
this.enableSkipping = false;
this.maxDoc = 0;
this.maxValueAsBytes = null;
this.minValueAsBytes = null;
}
}
@ -191,7 +185,9 @@ public abstract class NumericComparator<T extends Number> extends FieldComparato
// update its iterator to include possibly only docs that are "stronger" than the current bottom
// entry
private void updateCompetitiveIterator() throws IOException {
if (enableSkipping == false || hitsThresholdReached == false || queueFull == false) return;
if (enableSkipping == false
|| hitsThresholdReached == false
|| (queueFull == false && topValueSet == false)) return;
// if some documents have missing points, check that missing values prohibits optimization
if ((pointValues.getDocCount() < maxDoc) && isMissingValueCompetitive()) {
return; // we can't filter out documents, as documents with missing values are competitive
@ -204,13 +200,21 @@ public abstract class NumericComparator<T extends Number> extends FieldComparato
return;
}
if (reverse == false) {
if (queueFull) { // bottom is avilable only when queue is full
maxValueAsBytes = maxValueAsBytes == null ? new byte[bytesCount] : maxValueAsBytes;
encodeBottom(maxValueAsBytes);
}
if (topValueSet) {
minValueAsBytes = minValueAsBytes == null ? new byte[bytesCount] : minValueAsBytes;
encodeTop(minValueAsBytes);
}
} else {
if (queueFull) { // bottom is avilable only when queue is full
minValueAsBytes = minValueAsBytes == null ? new byte[bytesCount] : minValueAsBytes;
encodeBottom(minValueAsBytes);
}
if (topValueSet) {
maxValueAsBytes = maxValueAsBytes == null ? new byte[bytesCount] : maxValueAsBytes;
encodeTop(maxValueAsBytes);
}
}