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Use standard bit set impl in cardinality #61816

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Merged
merged 4 commits into from
Sep 3, 2020
Merged

Use standard bit set impl in cardinality #61816

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fee9221
Use standard bit set impl in cardinality
nik9000 Sep 1, 2020
885a943
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nik9000 Sep 1, 2020
5681544
Merge branch 'master' into cardinality_bit_array
nik9000 Sep 2, 2020
4cdfae2
update after we support long
nik9000 Sep 2, 2020
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35 changes: 4 additions & 31 deletions server/src/main/java/org/elasticsearch/search/aggregations/metrics/HyperLogLogPlusPlus.java
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Original file line number Diff line number Diff line change
Expand Up @@ -20,13 +20,13 @@
package org.elasticsearch.search.aggregations.metrics;

import org.apache.lucene.util.BytesRef;
import org.apache.lucene.util.LongBitSet;
import org.apache.lucene.util.packed.PackedInts;
import org.elasticsearch.common.io.stream.StreamInput;
import org.elasticsearch.common.io.stream.StreamOutput;
import org.elasticsearch.common.lease.Releasable;
import org.elasticsearch.common.lease.Releasables;
import org.elasticsearch.common.util.BigArrays;
import org.elasticsearch.common.util.BitArray;
import org.elasticsearch.common.util.ByteArray;
import org.elasticsearch.common.util.ByteUtils;
import org.elasticsearch.common.util.IntArray;
Expand Down Expand Up @@ -63,7 +63,7 @@ public final class HyperLogLogPlusPlus implements Releasable {
private static final boolean HYPERLOGLOG = true;
public static final int DEFAULT_PRECISION = 14;

private final OpenBitSet algorithm;
private final BitArray algorithm;
private final HyperLogLog hll;
private final LinearCounting lc;

Expand All @@ -89,7 +89,7 @@ public static long memoryUsage(int precision) {
public HyperLogLogPlusPlus(int precision, BigArrays bigArrays, long initialBucketCount) {
hll = new HyperLogLog(bigArrays, initialBucketCount, precision);
lc = new LinearCounting(bigArrays, initialBucketCount, precision, hll);
algorithm = new OpenBitSet();
algorithm = new BitArray(1, bigArrays);
}

public int precision() {
Expand Down Expand Up @@ -181,7 +181,7 @@ void upgradeToHll(long bucket) {

@Override
public void close() {
Releasables.close(hll, lc);
Releasables.close(algorithm, hll, lc);
}

private Object getComparableData(long bucket) {
Expand Down Expand Up @@ -485,31 +485,4 @@ public int value() {
return value;
}
}

/** looks and smells like the old openbitset. */
static class OpenBitSet {
LongBitSet impl = new LongBitSet(64);

boolean get(long bit) {
if (bit < impl.length()) {
return impl.get(bit);
} else {
return false;
}
}

void ensureCapacity(long bit) {
impl = LongBitSet.ensureCapacity(impl, bit);
}

void set(long bit) {
ensureCapacity(bit);
impl.set(bit);
}

void clear(long bit) {
ensureCapacity(bit);
impl.clear(bit);
}
}
}