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[Star tree][Bug] Fix for derived metrics (#15640) (#15686)
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---------


(cherry picked from commit 71a771e)

Signed-off-by: Bharathwaj G <bharath78910@gmail.com>
Signed-off-by: github-actions[bot] <github-actions[bot]@users.noreply.github.com>
Co-authored-by: github-actions[bot] <github-actions[bot]@users.noreply.github.com>
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@opensearch-trigger-bot @github-actions @bharath-techie
2 people authored and bharath-techie committed Sep 5, 2024
1 parent dac70e8 commit ee3fe47
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Showing 12 changed files with 163 additions and 44 deletions.
2 changes: 1 addition & 1 deletion ...ain/java/org/opensearch/index/codec/composite/composite99/Composite99DocValuesReader.java
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Expand Up @@ -164,7 +164,7 @@ public Composite99DocValuesReader(DocValuesProducer producer, SegmentReadState r

// adding metric fields
for (Metric metric : starTreeMetadata.getMetrics()) {
for (MetricStat metricStat : metric.getMetrics()) {
for (MetricStat metricStat : metric.getBaseMetrics()) {
fields.add(
fullyQualifiedFieldNameForStarTreeMetricsDocValues(
compositeFieldName,
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16 changes: 16 additions & 0 deletions server/src/main/java/org/opensearch/index/compositeindex/datacube/Metric.java
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Expand Up @@ -13,6 +13,7 @@
import org.opensearch.core.xcontent.XContentBuilder;

import java.io.IOException;
import java.util.ArrayList;
import java.util.List;
import java.util.Objects;

Expand All @@ -23,10 +24,18 @@
public class Metric implements ToXContent {
private final String field;
private final List<MetricStat> metrics;
private final List<MetricStat> baseMetrics;

public Metric(String field, List<MetricStat> metrics) {
this.field = field;
this.metrics = metrics;
this.baseMetrics = new ArrayList<>();
for (MetricStat metricStat : metrics) {
if (metricStat.isDerivedMetric()) {
continue;
}
baseMetrics.add(metricStat);
}
}

public String getField() {
Expand All @@ -37,6 +46,13 @@ public List<MetricStat> getMetrics() {
return metrics;
}

/**
* Returns only the base metrics
*/
public List<MetricStat> getBaseMetrics() {
return baseMetrics;
}

@Override
public XContentBuilder toXContent(XContentBuilder builder, Params params) throws IOException {
builder.startObject();
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7 changes: 2 additions & 5 deletions ...va/org/opensearch/index/compositeindex/datacube/startree/builder/BaseStarTreeBuilder.java
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Expand Up @@ -150,10 +150,7 @@ public List<MetricAggregatorInfo> generateMetricAggregatorInfos(MapperService ma
metricAggregatorInfos.add(metricAggregatorInfo);
continue;
}
for (MetricStat metricStat : metric.getMetrics()) {
if (metricStat.isDerivedMetric()) {
continue;
}
for (MetricStat metricStat : metric.getBaseMetrics()) {
FieldValueConverter fieldValueConverter;
Mapper fieldMapper = mapperService.documentMapper().mappers().getMapper(metric.getField());
if (fieldMapper instanceof FieldMapper && ((FieldMapper) fieldMapper).fieldType() instanceof FieldValueConverter) {
Expand Down Expand Up @@ -185,7 +182,7 @@ public List<SequentialDocValuesIterator> getMetricReaders(SegmentWriteState stat

List<SequentialDocValuesIterator> metricReaders = new ArrayList<>();
for (Metric metric : this.starTreeField.getMetrics()) {
for (MetricStat metricStat : metric.getMetrics()) {
for (MetricStat metricStat : metric.getBaseMetrics()) {
SequentialDocValuesIterator metricReader;
FieldInfo metricFieldInfo = state.fieldInfos.fieldInfo(metric.getField());
if (metricStat.equals(MetricStat.DOC_COUNT)) {
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2 changes: 1 addition & 1 deletion ...org/opensearch/index/compositeindex/datacube/startree/builder/OffHeapStarTreeBuilder.java
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Expand Up @@ -158,7 +158,7 @@ Iterator<StarTreeDocument> mergeStarTrees(List<StarTreeValues> starTreeValuesSub
List<SequentialDocValuesIterator> metricReaders = new ArrayList<>();
// get doc id set iterators for metrics
for (Metric metric : starTreeValues.getStarTreeField().getMetrics()) {
for (MetricStat metricStat : metric.getMetrics()) {
for (MetricStat metricStat : metric.getBaseMetrics()) {
String metricFullName = fullyQualifiedFieldNameForStarTreeMetricsDocValues(
starTreeValues.getStarTreeField().getName(),
metric.getField(),
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2 changes: 1 addition & 1 deletion .../org/opensearch/index/compositeindex/datacube/startree/builder/OnHeapStarTreeBuilder.java
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Expand Up @@ -144,7 +144,7 @@ StarTreeDocument[] getSegmentsStarTreeDocuments(List<StarTreeValues> starTreeVal
List<SequentialDocValuesIterator> metricReaders = new ArrayList<>();
// get doc id set iterators for metrics
for (Metric metric : starTreeValues.getStarTreeField().getMetrics()) {
for (MetricStat metricStat : metric.getMetrics()) {
for (MetricStat metricStat : metric.getBaseMetrics()) {
String metricFullName = fullyQualifiedFieldNameForStarTreeMetricsDocValues(
starTreeValues.getStarTreeField().getName(),
metric.getField(),
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29 changes: 25 additions & 4 deletions .../opensearch/index/compositeindex/datacube/startree/fileformats/meta/StarTreeMetadata.java
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Expand Up @@ -220,16 +220,37 @@ private int readMetricsCount() throws IOException {
private List<Metric> readMetricEntries() throws IOException {
int metricCount = readMetricsCount();

Map<String, Metric> starTreeMetricMap = new LinkedHashMap<>();
Map<String, List<MetricStat>> starTreeMetricStatMap = new LinkedHashMap<>();
for (int i = 0; i < metricCount; i++) {
String metricName = meta.readString();
int metricStatOrdinal = meta.readVInt();
MetricStat metricStat = MetricStat.fromMetricOrdinal(metricStatOrdinal);
Metric metric = starTreeMetricMap.computeIfAbsent(metricName, field -> new Metric(field, new ArrayList<>()));
metric.getMetrics().add(metricStat);
List<MetricStat> metricStats = starTreeMetricStatMap.computeIfAbsent(metricName, field -> new ArrayList<>());
metricStats.add(metricStat);
}
List<Metric> starTreeMetricMap = new ArrayList<>();
for (Map.Entry<String, List<MetricStat>> metricStatsEntry : starTreeMetricStatMap.entrySet()) {
addEligibleDerivedMetrics(metricStatsEntry.getValue());
starTreeMetricMap.add(new Metric(metricStatsEntry.getKey(), metricStatsEntry.getValue()));

return new ArrayList<>(starTreeMetricMap.values());
}
return starTreeMetricMap;
}

/**
* Add derived metrics if all associated base metrics are present
*/
private void addEligibleDerivedMetrics(List<MetricStat> metricStatsList) {
Set<MetricStat> metricStatsSet = new HashSet<>(metricStatsList);
for (MetricStat metric : MetricStat.values()) {
if (metric.isDerivedMetric() && !metricStatsSet.contains(metric)) {
List<MetricStat> sourceMetrics = metric.getBaseMetrics();
if (metricStatsSet.containsAll(sourceMetrics)) {
metricStatsList.add(metric);
metricStatsSet.add(metric);
}
}
}
}

private int readSegmentAggregatedDocCount() throws IOException {
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2 changes: 1 addition & 1 deletion ...main/java/org/opensearch/index/compositeindex/datacube/startree/index/StarTreeValues.java
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Expand Up @@ -171,7 +171,7 @@ public StarTreeValues(

// get doc id set iterators for metrics
for (Metric metric : starTreeMetadata.getMetrics()) {
for (MetricStat metricStat : metric.getMetrics()) {
for (MetricStat metricStat : metric.getBaseMetrics()) {
String metricFullName = fullyQualifiedFieldNameForStarTreeMetricsDocValues(
starTreeField.getName(),
metric.getField(),
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4 changes: 1 addition & 3 deletions server/src/main/java/org/opensearch/index/mapper/NumberFieldMapper.java
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Expand Up @@ -653,9 +653,7 @@ public byte[] encodePoint(Number value) {

@Override
public double toDoubleValue(long value) {
byte[] bytes = new byte[8];
NumericUtils.longToSortableBytes(value, bytes, 0);
return NumericUtils.sortableLongToDouble(NumericUtils.sortableBytesToLong(bytes, 0));
return objectToDouble(value);
}

@Override
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6 changes: 1 addition & 5 deletions server/src/main/java/org/opensearch/index/mapper/StarTreeMapper.java
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Original file line number Diff line number Diff line change
Expand Up @@ -287,11 +287,7 @@ private List<Metric> buildMetrics(String fieldName, Map<String, Object> map, Map
}
int numBaseMetrics = 0;
for (Metric metric : metrics) {
for (MetricStat metricStat : metric.getMetrics()) {
if (metricStat.isDerivedMetric() == false) {
numBaseMetrics++;
}
}
numBaseMetrics += metric.getBaseMetrics().size();
}
if (numBaseMetrics > context.getSettings()
.getAsInt(
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69 changes: 60 additions & 9 deletions ...rg/opensearch/index/codec/composite99/datacube/startree/StarTreeDocValuesFormatTests.java
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Original file line number Diff line number Diff line change
Expand Up @@ -119,23 +119,23 @@ public void testStarTreeDocValues() throws IOException {
Document doc = new Document();
doc.add(new SortedNumericDocValuesField("sndv", 1));
doc.add(new SortedNumericDocValuesField("dv", 1));
doc.add(new SortedNumericDocValuesField("field", 1));
doc.add(new SortedNumericDocValuesField("field", -1));
iw.addDocument(doc);
doc = new Document();
doc.add(new SortedNumericDocValuesField("sndv", 1));
doc.add(new SortedNumericDocValuesField("dv", 1));
doc.add(new SortedNumericDocValuesField("field", 1));
doc.add(new SortedNumericDocValuesField("field", -1));
iw.addDocument(doc);
doc = new Document();
iw.forceMerge(1);
doc.add(new SortedNumericDocValuesField("sndv", 2));
doc.add(new SortedNumericDocValuesField("dv", 2));
doc.add(new SortedNumericDocValuesField("field", 2));
doc.add(new SortedNumericDocValuesField("field", -2));
iw.addDocument(doc);
doc = new Document();
doc.add(new SortedNumericDocValuesField("sndv", 2));
doc.add(new SortedNumericDocValuesField("dv", 2));
doc.add(new SortedNumericDocValuesField("field", 2));
doc.add(new SortedNumericDocValuesField("field", -2));
iw.addDocument(doc);
iw.forceMerge(1);
iw.close();
Expand All @@ -144,11 +144,39 @@ public void testStarTreeDocValues() throws IOException {
TestUtil.checkReader(ir);
assertEquals(1, ir.leaves().size());

// Segment documents
/**
* sndv dv field
* [1, 1, -1]
* [1, 1, -1]
* [2, 2, -2]
* [2, 2, -2]
*/
// Star tree docuements
/**
* sndv dv | [ sum, value_count, min, max[field]] , [ sum, value_count, min, max[sndv]], doc_count
* [1, 1] | [-2.0, 2.0, -1.0, -1.0, 2.0, 2.0, 1.0, 1.0, 2.0]
* [2, 2] | [-4.0, 2.0, -2.0, -2.0, 4.0, 2.0, 2.0, 2.0, 2.0]
* [null, 1] | [-2.0, 2.0, -1.0, -1.0, 2.0, 2.0, 1.0, 1.0, 2.0]
* [null, 2] | [-4.0, 2.0, -2.0, -2.0, 4.0, 2.0, 2.0, 2.0, 2.0]
*/
StarTreeDocument[] expectedStarTreeDocuments = new StarTreeDocument[4];
expectedStarTreeDocuments[0] = new StarTreeDocument(new Long[] { 1L, 1L }, new Double[] { 2.0, 2.0, 2.0 });
expectedStarTreeDocuments[1] = new StarTreeDocument(new Long[] { 2L, 2L }, new Double[] { 4.0, 2.0, 4.0 });
expectedStarTreeDocuments[2] = new StarTreeDocument(new Long[] { null, 1L }, new Double[] { 2.0, 2.0, 2.0 });
expectedStarTreeDocuments[3] = new StarTreeDocument(new Long[] { null, 2L }, new Double[] { 4.0, 2.0, 4.0 });
expectedStarTreeDocuments[0] = new StarTreeDocument(
new Long[] { 1L, 1L },
new Double[] { -2.0, 2.0, -1.0, -1.0, 2.0, 2.0, 1.0, 1.0, 2.0 }
);
expectedStarTreeDocuments[1] = new StarTreeDocument(
new Long[] { 2L, 2L },
new Double[] { -4.0, 2.0, -2.0, -2.0, 4.0, 2.0, 2.0, 2.0, 2.0 }
);
expectedStarTreeDocuments[2] = new StarTreeDocument(
new Long[] { null, 1L },
new Double[] { -2.0, 2.0, -1.0, -1.0, 2.0, 2.0, 1.0, 1.0, 2.0 }
);
expectedStarTreeDocuments[3] = new StarTreeDocument(
new Long[] { null, 2L },
new Double[] { -4.0, 2.0, -2.0, -2.0, 4.0, 2.0, 2.0, 2.0, 2.0 }
);

for (LeafReaderContext context : ir.leaves()) {
SegmentReader reader = Lucene.segmentReader(context.reader());
Expand All @@ -159,7 +187,17 @@ public void testStarTreeDocValues() throws IOException {
StarTreeValues starTreeValues = (StarTreeValues) starTreeDocValuesReader.getCompositeIndexValues(compositeIndexFieldInfo);
StarTreeDocument[] starTreeDocuments = StarTreeTestUtils.getSegmentsStarTreeDocuments(
List.of(starTreeValues),
List.of(NumberFieldMapper.NumberType.DOUBLE, NumberFieldMapper.NumberType.LONG, NumberFieldMapper.NumberType.LONG),
List.of(
NumberFieldMapper.NumberType.DOUBLE,
NumberFieldMapper.NumberType.LONG,
NumberFieldMapper.NumberType.DOUBLE,
NumberFieldMapper.NumberType.DOUBLE,
NumberFieldMapper.NumberType.DOUBLE,
NumberFieldMapper.NumberType.LONG,
NumberFieldMapper.NumberType.DOUBLE,
NumberFieldMapper.NumberType.DOUBLE,
NumberFieldMapper.NumberType.LONG
),
reader.maxDoc()
);
assertStarTreeDocuments(starTreeDocuments, expectedStarTreeDocuments);
Expand Down Expand Up @@ -190,6 +228,19 @@ private XContentBuilder getExpandedMapping() throws IOException {
b.startArray("stats");
b.value("sum");
b.value("value_count");
b.value("avg");
b.value("min");
b.value("max");
b.endArray();
b.endObject();
b.startObject();
b.field("name", "sndv");
b.startArray("stats");
b.value("sum");
b.value("value_count");
b.value("avg");
b.value("min");
b.value("max");
b.endArray();
b.endObject();
b.endArray();
Expand Down
40 changes: 34 additions & 6 deletions ...rc/test/java/org/opensearch/index/compositeindex/datacube/startree/StarTreeTestUtils.java
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Original file line number Diff line number Diff line change
Expand Up @@ -61,6 +61,9 @@ public static StarTreeDocument[] getSegmentsStarTreeDocuments(
// get doc id set iterators for metrics
for (Metric metric : starTreeValues.getStarTreeField().getMetrics()) {
for (MetricStat metricStat : metric.getMetrics()) {
if (metricStat.isDerivedMetric()) {
continue;
}
String metricFullName = fullyQualifiedFieldNameForStarTreeMetricsDocValues(
starTreeValues.getStarTreeField().getName(),
metric.getField(),
Expand Down Expand Up @@ -125,18 +128,18 @@ public static void assertStarTreeDocuments(StarTreeDocument[] starTreeDocuments,
assertNotNull(resultStarTreeDocument.dimensions);
assertNotNull(resultStarTreeDocument.metrics);

assertEquals(resultStarTreeDocument.dimensions.length, expectedStarTreeDocument.dimensions.length);
assertEquals(resultStarTreeDocument.metrics.length, expectedStarTreeDocument.metrics.length);
assertEquals(expectedStarTreeDocument.dimensions.length, resultStarTreeDocument.dimensions.length);
assertEquals(expectedStarTreeDocument.metrics.length, resultStarTreeDocument.metrics.length);

for (int di = 0; di < resultStarTreeDocument.dimensions.length; di++) {
assertEquals(resultStarTreeDocument.dimensions[di], expectedStarTreeDocument.dimensions[di]);
assertEquals(expectedStarTreeDocument.dimensions[di], resultStarTreeDocument.dimensions[di]);
}

for (int mi = 0; mi < resultStarTreeDocument.metrics.length; mi++) {
if (expectedStarTreeDocument.metrics[mi] instanceof Long) {
assertEquals(resultStarTreeDocument.metrics[mi], ((Long) expectedStarTreeDocument.metrics[mi]).doubleValue());
assertEquals(((Long) expectedStarTreeDocument.metrics[mi]).doubleValue(), resultStarTreeDocument.metrics[mi]);
} else {
assertEquals(resultStarTreeDocument.metrics[mi], expectedStarTreeDocument.metrics[mi]);
assertEquals(expectedStarTreeDocument.metrics[mi], resultStarTreeDocument.metrics[mi]);
}
}
}
Expand Down Expand Up @@ -267,9 +270,34 @@ public static void assertStarTreeMetadata(StarTreeMetadata expectedStarTreeMetad
Metric expectedMetric = expectedStarTreeMetadata.getMetrics().get(i);
Metric resultMetric = resultStarTreeMetadata.getMetrics().get(i);
assertEquals(expectedMetric.getField(), resultMetric.getField());
List<MetricStat> metricStats = new ArrayList<>();
for (MetricStat metricStat : expectedMetric.getMetrics()) {
if (metricStat.isDerivedMetric()) {
continue;
}
metricStats.add(metricStat);
}
Metric expectedMetricWithoutDerivedMetrics = new Metric(expectedMetric.getField(), metricStats);
metricStats = new ArrayList<>();
for (MetricStat metricStat : resultMetric.getMetrics()) {
if (metricStat.isDerivedMetric()) {
continue;
}
metricStats.add(metricStat);
}
Metric resultantMetricWithoutDerivedMetrics = new Metric(resultMetric.getField(), metricStats);

// assert base metrics are in order in metadata
for (int j = 0; j < expectedMetricWithoutDerivedMetrics.getMetrics().size(); j++) {
assertEquals(
expectedMetricWithoutDerivedMetrics.getMetrics().get(j),
resultantMetricWithoutDerivedMetrics.getMetrics().get(j)
);
}

// assert all metrics ( including derived metrics are present )
for (int j = 0; j < expectedMetric.getMetrics().size(); j++) {
assertEquals(expectedMetric.getMetrics().get(j), resultMetric.getMetrics().get(j));
assertTrue(resultMetric.getMetrics().contains(expectedMetric.getMetrics().get(j)));
}

}
Expand Down
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