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LUCENE-10189: Optimize flush of doc-value fields that are effectively single-valued. (#399)

This commit is contained in:
Adrien Grand 2021-10-20 19:05:40 +02:00 committed by GitHub
parent 0e1f9fcf31
commit 3a11983de2
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5 changed files with 82 additions and 66 deletions
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15
lucene/core/src/java/org/apache/lucene/index/DocsWithFieldSet.java
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@ -32,7 +32,7 @@ final class DocsWithFieldSet extends DocIdSet {
RamUsageEstimator.shallowSizeOfInstance(DocsWithFieldSet.class);
private FixedBitSet set;
private int cost = 0;
private int cardinality = 0;
private int lastDocId = -1;
void add(int docID) {
@ -43,14 +43,14 @@ final class DocsWithFieldSet extends DocIdSet {
if (set != null) {
set = FixedBitSet.ensureCapacity(set, docID);
set.set(docID);
} else if (docID != cost) {
} else if (docID != cardinality) {
// migrate to a sparse encoding using a bit set
set = new FixedBitSet(docID + 1);
set.set(0, cost);
set.set(0, cardinality);
set.set(docID);
}
lastDocId = docID;
cost++;
cardinality++;
}
@Override
@ -60,6 +60,11 @@ final class DocsWithFieldSet extends DocIdSet {
@Override
public DocIdSetIterator iterator() {
return set != null ? new BitSetIterator(set, cost) : DocIdSetIterator.all(cost);
return set != null ? new BitSetIterator(set, cardinality) : DocIdSetIterator.all(cardinality);
}
/** Return the number of documents of this set. */
int cardinality() {
return cardinality;
}
}

4
lucene/core/src/java/org/apache/lucene/index/NumericDocValuesWriter.java
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@ -30,7 +30,7 @@ import org.apache.lucene.util.packed.PackedLongValues;
/** Buffers up pending long per doc, then flushes when segment flushes. */
class NumericDocValuesWriter extends DocValuesWriter<NumericDocValues> {
private PackedLongValues.Builder pending;
private final PackedLongValues.Builder pending;
private PackedLongValues finalValues;
private final Counter iwBytesUsed;
private long bytesUsed;
@ -126,7 +126,7 @@ class NumericDocValuesWriter extends DocValuesWriter<NumericDocValues> {
}
// iterates over the values we have in ram
private static class BufferedNumericDocValues extends NumericDocValues {
static class BufferedNumericDocValues extends NumericDocValues {
final PackedLongValues.Iterator iter;
final DocIdSetIterator docsWithField;
private long value;

27
lucene/core/src/java/org/apache/lucene/index/SortedDocValuesWriter.java
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@ -37,8 +37,8 @@ import org.apache.lucene.util.packed.PackedLongValues;
*/
class SortedDocValuesWriter extends DocValuesWriter<SortedDocValues> {
final BytesRefHash hash;
private PackedLongValues.Builder pending;
private DocsWithFieldSet docsWithField;
private final PackedLongValues.Builder pending;
private final DocsWithFieldSet docsWithField;
private final Counter iwBytesUsed;
private long bytesUsed; // this currently only tracks differences in 'pending'
private final FieldInfo fieldInfo;
@ -123,7 +123,7 @@ class SortedDocValuesWriter extends DocValuesWriter<SortedDocValues> {
finalOrdMap[finalSortedValues[ord]] = ord;
}
return new BufferedSortedDocValues(
hash, valueCount, finalOrds, finalSortedValues, finalOrdMap, docsWithField.iterator());
hash, finalOrds, finalSortedValues, finalOrdMap, docsWithField.iterator());
}
private int[] sortDocValues(int maxDoc, Sorter.DocMap sortMap, SortedDocValues oldValues)
@ -159,12 +159,7 @@ class SortedDocValuesWriter extends DocValuesWriter<SortedDocValues> {
state.segmentInfo.maxDoc(),
sortMap,
new BufferedSortedDocValues(
hash,
valueCount,
finalOrds,
finalSortedValues,
finalOrdMap,
docsWithField.iterator()));
hash, finalOrds, finalSortedValues, finalOrdMap, docsWithField.iterator()));
} else {
sorted = null;
}
@ -178,12 +173,7 @@ class SortedDocValuesWriter extends DocValuesWriter<SortedDocValues> {
}
final SortedDocValues buf =
new BufferedSortedDocValues(
hash,
valueCount,
finalOrds,
finalSortedValues,
finalOrdMap,
docsWithField.iterator());
hash, finalOrds, finalSortedValues, finalOrdMap, docsWithField.iterator());
if (sorted == null) {
return buf;
}
@ -192,25 +182,22 @@ class SortedDocValuesWriter extends DocValuesWriter<SortedDocValues> {
});
}
private static class BufferedSortedDocValues extends SortedDocValues {
static class BufferedSortedDocValues extends SortedDocValues {
final BytesRefHash hash;
final BytesRef scratch = new BytesRef();
final int[] sortedValues;
final int[] ordMap;
final int valueCount;
private int ord;
final PackedLongValues.Iterator iter;
final DocIdSetIterator docsWithField;
public BufferedSortedDocValues(
BytesRefHash hash,
int valueCount,
PackedLongValues docToOrd,
int[] sortedValues,
int[] ordMap,
DocIdSetIterator docsWithField) {
this.hash = hash;
this.valueCount = valueCount;
this.sortedValues = sortedValues;
this.iter = docToOrd.iterator();
this.ordMap = ordMap;
@ -262,7 +249,7 @@ class SortedDocValuesWriter extends DocValuesWriter<SortedDocValues> {
@Override
public int getValueCount() {
return valueCount;
return hash.size();
}
}

38
lucene/core/src/java/org/apache/lucene/index/SortedNumericDocValuesWriter.java
View File

@ -21,6 +21,7 @@ import static org.apache.lucene.search.DocIdSetIterator.NO_MORE_DOCS;
import java.io.IOException;
import java.util.Arrays;
import org.apache.lucene.codecs.DocValuesConsumer;
import org.apache.lucene.index.NumericDocValuesWriter.BufferedNumericDocValues;
import org.apache.lucene.search.DocIdSetIterator;
import org.apache.lucene.util.ArrayUtil;
import org.apache.lucene.util.Counter;
@ -30,9 +31,9 @@ import org.apache.lucene.util.packed.PackedLongValues;
/** Buffers up pending long[] per doc, sorts, then flushes when segment flushes. */
class SortedNumericDocValuesWriter extends DocValuesWriter<SortedNumericDocValues> {
private PackedLongValues.Builder pending; // stream of all values
private final PackedLongValues.Builder pending; // stream of all values
private PackedLongValues.Builder pendingCounts; // count of values per doc
private DocsWithFieldSet docsWithField;
private final DocsWithFieldSet docsWithField;
private final Counter iwBytesUsed;
private long bytesUsed; // this only tracks differences in 'pending' and 'pendingCounts'
private final FieldInfo fieldInfo;
@ -47,11 +48,9 @@ class SortedNumericDocValuesWriter extends DocValuesWriter<SortedNumericDocValue
this.fieldInfo = fieldInfo;
this.iwBytesUsed = iwBytesUsed;
pending = PackedLongValues.deltaPackedBuilder(PackedInts.COMPACT);
pendingCounts = PackedLongValues.deltaPackedBuilder(PackedInts.COMPACT);
docsWithField = new DocsWithFieldSet();
bytesUsed =
pending.ramBytesUsed()
+ pendingCounts.ramBytesUsed()
+ docsWithField.ramBytesUsed()
+ RamUsageEstimator.sizeOf(currentValues);
iwBytesUsed.addAndGet(bytesUsed);
@ -78,7 +77,15 @@ class SortedNumericDocValuesWriter extends DocValuesWriter<SortedNumericDocValue
pending.add(currentValues[i]);
}
// record the number of values for this doc
if (pendingCounts != null) {
pendingCounts.add(currentUpto);
} else if (currentUpto != 1) {
pendingCounts = PackedLongValues.deltaPackedBuilder(PackedInts.COMPACT);
for (int i = 0; i < docsWithField.cardinality(); ++i) {
pendingCounts.add(1);
}
pendingCounts.add(currentUpto);
}
currentUpto = 0;
docsWithField.add(currentDoc);
@ -96,7 +103,7 @@ class SortedNumericDocValuesWriter extends DocValuesWriter<SortedNumericDocValue
private void updateBytesUsed() {
final long newBytesUsed =
pending.ramBytesUsed()
+ pendingCounts.ramBytesUsed()
+ (pendingCounts == null ? 0 : pendingCounts.ramBytesUsed())
+ docsWithField.ramBytesUsed()
+ RamUsageEstimator.sizeOf(currentValues);
iwBytesUsed.addAndGet(newBytesUsed - bytesUsed);
@ -109,10 +116,9 @@ class SortedNumericDocValuesWriter extends DocValuesWriter<SortedNumericDocValue
assert finalValuesCount == null;
finishCurrentDoc();
finalValues = pending.build();
finalValuesCount = pendingCounts.build();
finalValuesCount = pendingCounts == null ? null : pendingCounts.build();
}
return new BufferedSortedNumericDocValues(
finalValues, finalValuesCount, docsWithField.iterator());
return getValues(finalValues, finalValuesCount, docsWithField);
}
static final class LongValues {
@ -144,6 +150,15 @@ class SortedNumericDocValuesWriter extends DocValuesWriter<SortedNumericDocValue
}
}
private SortedNumericDocValues getValues(
PackedLongValues values, PackedLongValues valueCounts, DocsWithFieldSet docsWithField) {
if (valueCounts == null) {
return DocValues.singleton(new BufferedNumericDocValues(values, docsWithField.iterator()));
} else {
return new BufferedSortedNumericDocValues(values, valueCounts, docsWithField.iterator());
}
}
@Override
public void flush(SegmentWriteState state, Sorter.DocMap sortMap, DocValuesConsumer dvConsumer)
throws IOException {
@ -152,7 +167,7 @@ class SortedNumericDocValuesWriter extends DocValuesWriter<SortedNumericDocValue
if (finalValues == null) {
finishCurrentDoc();
values = pending.build();
valueCounts = pendingCounts.build();
valueCounts = pendingCounts == null ? null : pendingCounts.build();
} else {
values = finalValues;
valueCounts = finalValuesCount;
@ -164,7 +179,7 @@ class SortedNumericDocValuesWriter extends DocValuesWriter<SortedNumericDocValue
new LongValues(
state.segmentInfo.maxDoc(),
sortMap,
new BufferedSortedNumericDocValues(values, valueCounts, docsWithField.iterator()),
getValues(values, valueCounts, docsWithField),
PackedInts.FASTEST);
} else {
sorted = null;
@ -178,8 +193,7 @@ class SortedNumericDocValuesWriter extends DocValuesWriter<SortedNumericDocValue
if (fieldInfoIn != fieldInfo) {
throw new IllegalArgumentException("wrong fieldInfo");
}
final SortedNumericDocValues buf =
new BufferedSortedNumericDocValues(values, valueCounts, docsWithField.iterator());
final SortedNumericDocValues buf = getValues(values, valueCounts, docsWithField);
if (sorted == null) {
return buf;
} else {

58
lucene/core/src/java/org/apache/lucene/index/SortedSetDocValuesWriter.java
View File

@ -23,6 +23,7 @@ import static org.apache.lucene.util.ByteBlockPool.BYTE_BLOCK_SIZE;
import java.io.IOException;
import java.util.Arrays;
import org.apache.lucene.codecs.DocValuesConsumer;
import org.apache.lucene.index.SortedDocValuesWriter.BufferedSortedDocValues;
import org.apache.lucene.search.DocIdSetIterator;
import org.apache.lucene.util.ArrayUtil;
import org.apache.lucene.util.ByteBlockPool;
@ -40,9 +41,9 @@ import org.apache.lucene.util.packed.PackedLongValues;
*/
class SortedSetDocValuesWriter extends DocValuesWriter<SortedSetDocValues> {
final BytesRefHash hash;
private PackedLongValues.Builder pending; // stream of all termIDs
private final PackedLongValues.Builder pending; // stream of all termIDs
private PackedLongValues.Builder pendingCounts; // termIDs per doc
private DocsWithFieldSet docsWithField;
private final DocsWithFieldSet docsWithField;
private final Counter iwBytesUsed;
private long bytesUsed; // this only tracks differences in 'pending' and 'pendingCounts'
private final FieldInfo fieldInfo;
@ -65,11 +66,9 @@ class SortedSetDocValuesWriter extends DocValuesWriter<SortedSetDocValues> {
BytesRefHash.DEFAULT_CAPACITY,
new DirectBytesStartArray(BytesRefHash.DEFAULT_CAPACITY, iwBytesUsed));
pending = PackedLongValues.packedBuilder(PackedInts.COMPACT);
pendingCounts = PackedLongValues.deltaPackedBuilder(PackedInts.COMPACT);
docsWithField = new DocsWithFieldSet();
bytesUsed =
pending.ramBytesUsed()
+ pendingCounts.ramBytesUsed()
+ docsWithField.ramBytesUsed()
+ RamUsageEstimator.sizeOf(currentValues);
iwBytesUsed.addAndGet(bytesUsed);
@ -116,7 +115,15 @@ class SortedSetDocValuesWriter extends DocValuesWriter<SortedSetDocValues> {
lastValue = termID;
}
// record the number of unique term ids for this doc
if (pendingCounts != null) {
pendingCounts.add(count);
} else if (count != 1) {
pendingCounts = PackedLongValues.deltaPackedBuilder(PackedInts.COMPACT);
for (int i = 0; i < docsWithField.cardinality(); ++i) {
pendingCounts.add(1);
}
pendingCounts.add(count);
}
maxCount = Math.max(maxCount, count);
currentUpto = 0;
docsWithField.add(currentDoc);
@ -146,7 +153,7 @@ class SortedSetDocValuesWriter extends DocValuesWriter<SortedSetDocValues> {
private void updateBytesUsed() {
final long newBytesUsed =
pending.ramBytesUsed()
+ pendingCounts.ramBytesUsed()
+ (pendingCounts == null ? 0 : pendingCounts.ramBytesUsed())
+ docsWithField.ramBytesUsed()
+ RamUsageEstimator.sizeOf(currentValues);
iwBytesUsed.addAndGet(newBytesUsed - bytesUsed);
@ -160,21 +167,32 @@ class SortedSetDocValuesWriter extends DocValuesWriter<SortedSetDocValues> {
finishCurrentDoc();
int valueCount = hash.size();
finalOrds = pending.build();
finalOrdCounts = pendingCounts.build();
finalOrdCounts = pendingCounts == null ? null : pendingCounts.build();
finalSortedValues = hash.sort();
finalOrdMap = new int[valueCount];
}
for (int ord = 0; ord < finalOrdMap.length; ord++) {
finalOrdMap[finalSortedValues[ord]] = ord;
}
return getValues(
finalSortedValues, finalOrdMap, hash, finalOrds, finalOrdCounts, maxCount, docsWithField);
}
private SortedSetDocValues getValues(
int[] sortedValues,
int[] ordMap,
BytesRefHash hash,
PackedLongValues ords,
PackedLongValues ordCounts,
int maxCount,
DocsWithFieldSet docsWithField) {
if (ordCounts == null) {
return DocValues.singleton(
new BufferedSortedDocValues(hash, ords, sortedValues, ordMap, docsWithField.iterator()));
} else {
return new BufferedSortedSetDocValues(
finalSortedValues,
finalOrdMap,
hash,
finalOrds,
finalOrdCounts,
maxCount,
docsWithField.iterator());
sortedValues, ordMap, hash, ords, ordCounts, maxCount, docsWithField.iterator());
}
}
@Override
@ -190,7 +208,7 @@ class SortedSetDocValuesWriter extends DocValuesWriter<SortedSetDocValues> {
assert finalOrdCounts == null && finalSortedValues == null && finalOrdMap == null;
finishCurrentDoc();
ords = pending.build();
ordCounts = pendingCounts.build();
ordCounts = pendingCounts == null ? null : pendingCounts.build();
sortedValues = hash.sort();
ordMap = new int[valueCount];
for (int ord = 0; ord < valueCount; ord++) {
@ -209,8 +227,7 @@ class SortedSetDocValuesWriter extends DocValuesWriter<SortedSetDocValues> {
new DocOrds(
state.segmentInfo.maxDoc(),
sortMap,
new BufferedSortedSetDocValues(
sortedValues, ordMap, hash, ords, ordCounts, maxCount, docsWithField.iterator()),
getValues(sortedValues, ordMap, hash, ords, ordCounts, maxCount, docsWithField),
PackedInts.FASTEST);
} else {
docOrds = null;
@ -224,14 +241,7 @@ class SortedSetDocValuesWriter extends DocValuesWriter<SortedSetDocValues> {
throw new IllegalArgumentException("wrong fieldInfo");
}
final SortedSetDocValues buf =
new BufferedSortedSetDocValues(
sortedValues,
ordMap,
hash,
ords,
ordCounts,
maxCount,
docsWithField.iterator());
getValues(sortedValues, ordMap, hash, ords, ordCounts, maxCount, docsWithField);
if (docOrds == null) {
return buf;
} else {