Add might_contain SparkSql function

velox/common/base/BloomFilter.h

@@ -64,7 +64,7 @@ class BloomFilter {
   void merge(const char* serialized) {
     common::InputByteStream stream(serialized);
     auto version = stream.read<int8_t>();
-    VELOX_CHECK_EQ(kBloomFilterV1, version);
+    VELOX_USER_CHECK_EQ(kBloomFilterV1, version);
     auto size = stream.read<int32_t>();
     bits_.resize(size);
     auto bitsdata =

velox/docs/functions/spark/binary.rst

@@ -10,6 +10,13 @@ Binary Functions
 
     Computes the md5 of x.
 
+.. spark:function:: might_contain(bloomFilter, value) -> boolean
+
+   Returns TRUE if ``bloomFilter`` might contain ``value``. 
+
+   ``bloomFilter`` is a VARBINARY computed using ::spark::function::`bloom_filter_agg` aggregate function. 
+   ``value`` is a BIGINT.
+
 .. spark:function:: sha1(x) -> varchar
 
     Computes SHA-1 digest of x and convert the result to a hex string.

velox/functions/sparksql/CMakeLists.txt

@@ -20,6 +20,7 @@ add_library(
   In.cpp
   LeastGreatest.cpp
   Map.cpp
+  MightContain.cpp
   RegexFunctions.cpp
   Register.cpp
   RegisterArithmetic.cpp

velox/functions/sparksql/MightContain.cpp

@@ -0,0 +1,70 @@
+/*
+ * Copyright (c) Facebook, Inc. and its affiliates.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+#include "velox/functions/sparksql/MightContain.h"
+
+#include "velox/common/base/BloomFilter.h"
+#include "velox/common/memory/HashStringAllocator.h"
+#include "velox/expression/DecodedArgs.h"
+#include "velox/vector/FlatVector.h"
+
+namespace facebook::velox::functions::sparksql {
+namespace {
+class BloomFilterMightContainFunction final : public exec::VectorFunction {
+  void apply(
+      const SelectivityVector& rows,
+      std::vector<VectorPtr>& args, // Not using const ref so we can reuse args
+      const TypePtr& outputType,
+      exec::EvalCtx& context,
+      VectorPtr& resultRef) const final {
+    VELOX_CHECK_EQ(args.size(), 2);
+    context.ensureWritable(rows, BOOLEAN(), resultRef);
+    auto& result = *resultRef->as<FlatVector<bool>>();
+    exec::DecodedArgs decodedArgs(rows, args, context);
+    auto serialized = decodedArgs.at(0);
+    auto value = decodedArgs.at(1);
+
+    HashStringAllocator allocator{context.pool()};
+    VELOX_USER_CHECK(serialized->isConstantMapping())
+    BloomFilter output{StlAllocator<uint64_t>(&allocator)};
+    try {
+      output.merge(serialized->valueAt<StringView>(0).str().c_str());
+    } catch (const std::exception& e) {
+      context.setErrors(rows, std::current_exception());
+      return;
+    }
+
+    rows.applyToSelected([&](int row) {
+      auto contain = output.mayContain(
+          folly::hasher<int64_t>()(value->valueAt<int64_t>(row)));
+      result.set(row, contain);
+    });
+  }
+};
+} // namespace
+
+std::vector<std::shared_ptr<exec::FunctionSignature>> mightContainSignatures() {
+  return {exec::FunctionSignatureBuilder()
+              .returnType("boolean")
+              .constantArgumentType("varbinary")
+              .argumentType("bigint")
+              .build()};
+}
+
+std::unique_ptr<exec::VectorFunction> makeMightContain() {
+  return std::make_unique<BloomFilterMightContainFunction>();
+}
+
+} // namespace facebook::velox::functions::sparksql

velox/functions/sparksql/MightContain.h

@@ -0,0 +1,24 @@
+/*
+ * Copyright (c) Facebook, Inc. and its affiliates.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+#include "velox/expression/VectorFunction.h"
+
+namespace facebook::velox::functions::sparksql {
+
+std::vector<std::shared_ptr<exec::FunctionSignature>> mightContainSignatures();
+
+std::unique_ptr<exec::VectorFunction> makeMightContain();
+
+} // namespace facebook::velox::functions::sparksql

velox/functions/sparksql/Register.cpp

@@ -28,6 +28,7 @@
 #include "velox/functions/sparksql/Hash.h"
 #include "velox/functions/sparksql/In.h"
 #include "velox/functions/sparksql/LeastGreatest.h"
+#include "velox/functions/sparksql/MightContain.h"
 #include "velox/functions/sparksql/RegexFunctions.h"
 #include "velox/functions/sparksql/RegisterArithmetic.h"
 #include "velox/functions/sparksql/RegisterCompare.h"
@@ -165,6 +166,10 @@ void registerFunctions(const std::string& prefix) {
       int64_t,
       Varchar,
       Varchar>({prefix + "unix_timestamp", prefix + "to_unix_timestamp"});
+
+  // Register bloom filter function
+  exec::registerVectorFunction(
+      prefix + "might_contain", mightContainSignatures(), makeMightContain());
 }
 
 } // namespace sparksql

velox/functions/sparksql/tests/CMakeLists.txt

@@ -24,6 +24,7 @@ add_executable(
   InTest.cpp
   LeastGreatestTest.cpp
   MapTest.cpp
+  MightContainTest.cpp
   RegexFunctionsTest.cpp
   SizeTest.cpp
   SortArrayTest.cpp

velox/functions/sparksql/tests/MightContainTest.cpp

@@ -0,0 +1,78 @@
+/*
+ * Copyright (c) Facebook, Inc. and its affiliates.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#include "velox/functions/sparksql/MightContain.h"
+#include "velox/common/base/BloomFilter.h"
+#include "velox/common/memory/HashStringAllocator.h"
+#include "velox/functions/sparksql/tests/SparkFunctionBaseTest.h"
+
+namespace facebook::velox::functions::sparksql::test {
+namespace {
+
+class MightContainTest : public SparkFunctionBaseTest {
+ protected:
+  void testMightContain(
+      const VectorPtr& bloom,
+      const VectorPtr& value,
+      const VectorPtr& expected) {
+    auto result = evaluate(
+        "might_contain(cast(c0 as varbinary), c1)",
+        makeRowVector({bloom, value}));
+    velox::test::assertEqualVectors(expected, result);
+  }
+
+  std::string getSerializedBloomFilter() {
+    constexpr int64_t kSize = 10;
+    BloomFilter bloomFilter;
+    bloomFilter.reset(kSize);
+    for (auto i = 0; i < kSize; ++i) {
+      bloomFilter.insert(folly::hasher<int64_t>()(i));
+    }
+    std::string data;
+    data.resize(bloomFilter.serializedSize());
+    bloomFilter.serialize(data.data());
+    return data;
+  }
+};
+
+TEST_F(MightContainTest, basic) {
+  auto serialized = getSerializedBloomFilter();
+  auto bloomFilter = makeConstant<StringView>(StringView(serialized), 10);
+  auto value =
+      makeFlatVector<int64_t>(10, [](vector_size_t row) { return row; });
+  auto expectedContain = makeConstant(true, 10);
+  testMightContain(bloomFilter, value, expectedContain);
+
+  auto valueNotContain = makeFlatVector<int64_t>(
+      10, [](vector_size_t row) { return row + 123451; });
+  auto expectedNotContain = makeConstant(false, 10);
+  testMightContain(bloomFilter, valueNotContain, expectedNotContain);
+
+  auto values = makeNullableFlatVector<int64_t>(
+      {1, 2, 3, 4, 5, std::nullopt, 123451, 23456, 4, 5});
+  auto expected = makeNullableFlatVector<bool>(
+      {true, true, true, true, true, std::nullopt, false, false, true, true});
+  testMightContain(bloomFilter, values, expected);
+}
+
+TEST_F(MightContainTest, nullBloomFilter) {
+  auto bloomFilter = makeConstant<StringView>(std::nullopt, 2);
+  auto value = makeFlatVector<int64_t>({2, 4});
+  auto expected = makeNullConstant(TypeKind::BOOLEAN, 2);
+  testMightContain(bloomFilter, value, expected);
+}
+} // namespace
+} // namespace facebook::velox::functions::sparksql::test