You are viewing a plain text version of this content. The canonical link for it is here.
Posted to commits@drill.apache.org by pa...@apache.org on 2016/11/05 00:11:33 UTC
[06/10] drill git commit: DRILL-1950: Initial prototype patch for
parquet filter pushdown.
DRILL-1950: Initial prototype patch for parquet filter pushdown.
Use three new classes from Adam's patch.
Project: http://git-wip-us.apache.org/repos/asf/drill/repo
Commit: http://git-wip-us.apache.org/repos/asf/drill/commit/8ce1f033
Tree: http://git-wip-us.apache.org/repos/asf/drill/tree/8ce1f033
Diff: http://git-wip-us.apache.org/repos/asf/drill/diff/8ce1f033
Branch: refs/heads/master
Commit: 8ce1f03331970172dfd9d967504c60fd9752716a
Parents: a459e4d
Author: AdamPD <ad...@pharmadata.net.au>
Authored: Thu Jun 30 14:09:53 2016 -0700
Committer: Parth Chandra <pa...@apache.org>
Committed: Fri Nov 4 15:59:31 2016 -0700
----------------------------------------------------------------------
.../ParquetCompareFunctionProcessor.java | 280 ++++++++++++++++++
.../store/parquet/ParquetFilterBuilder.java | 284 +++++++++++++++++++
.../store/parquet/ParquetPushDownFilter.java | 142 ++++++++++
3 files changed, 706 insertions(+)
----------------------------------------------------------------------
http://git-wip-us.apache.org/repos/asf/drill/blob/8ce1f033/exec/java-exec/src/main/java/org/apache/drill/exec/store/parquet/ParquetCompareFunctionProcessor.java
----------------------------------------------------------------------
diff --git a/exec/java-exec/src/main/java/org/apache/drill/exec/store/parquet/ParquetCompareFunctionProcessor.java b/exec/java-exec/src/main/java/org/apache/drill/exec/store/parquet/ParquetCompareFunctionProcessor.java
new file mode 100644
index 0000000..bd59021
--- /dev/null
+++ b/exec/java-exec/src/main/java/org/apache/drill/exec/store/parquet/ParquetCompareFunctionProcessor.java
@@ -0,0 +1,280 @@
+/**
+ * Licensed to the Apache Software Foundation (ASF) under one
+ * or more contributor license agreements. See the NOTICE file
+ * distributed with this work for additional information
+ * regarding copyright ownership. The ASF licenses this file
+ * to you 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.
+ */
+package org.apache.drill.exec.store.parquet;
+
+import org.apache.drill.common.expression.CastExpression;
+import org.apache.drill.common.expression.ConvertExpression;
+import org.apache.drill.common.expression.FunctionCall;
+import org.apache.drill.common.expression.LogicalExpression;
+import org.apache.drill.common.expression.SchemaPath;
+import org.apache.drill.common.expression.ValueExpressions.BooleanExpression;
+import org.apache.drill.common.expression.ValueExpressions.DateExpression;
+import org.apache.drill.common.expression.ValueExpressions.DoubleExpression;
+import org.apache.drill.common.expression.ValueExpressions.FloatExpression;
+import org.apache.drill.common.expression.ValueExpressions.IntExpression;
+import org.apache.drill.common.expression.ValueExpressions.LongExpression;
+import org.apache.drill.common.expression.ValueExpressions.QuotedString;
+import org.apache.drill.common.expression.ValueExpressions.TimeExpression;
+import org.apache.drill.common.expression.ValueExpressions.TimeStampExpression;
+import org.apache.drill.common.expression.visitors.AbstractExprVisitor;
+
+import com.google.common.collect.ImmutableMap;
+import com.google.common.collect.ImmutableSet;
+import org.joda.time.DateTimeUtils;
+
+public class ParquetCompareFunctionProcessor extends
+ AbstractExprVisitor<Boolean, LogicalExpression, RuntimeException> {
+ private Object value;
+ private boolean success;
+ private boolean isEqualityFn;
+ private SchemaPath path;
+ private String functionName;
+
+ public static final long JULIAN_DAY_EPOC = DateTimeUtils.toJulianDayNumber(0);
+
+ public static boolean isCompareFunction(String functionName) {
+ return COMPARE_FUNCTIONS_TRANSPOSE_MAP.keySet().contains(functionName);
+ }
+
+ public static ParquetCompareFunctionProcessor process(FunctionCall call) {
+ String functionName = call.getName();
+ LogicalExpression nameArg = call.args.get(0);
+ LogicalExpression valueArg = call.args.size() == 2 ? call.args.get(1)
+ : null;
+ ParquetCompareFunctionProcessor evaluator = new ParquetCompareFunctionProcessor(
+ functionName);
+
+ if (valueArg != null) { // binary function
+ if (VALUE_EXPRESSION_CLASSES.contains(nameArg.getClass())) {
+ LogicalExpression swapArg = valueArg;
+ valueArg = nameArg;
+ nameArg = swapArg;
+ evaluator.functionName = COMPARE_FUNCTIONS_TRANSPOSE_MAP
+ .get(functionName);
+ }
+ evaluator.success = nameArg.accept(evaluator, valueArg);
+ } else if (call.args.get(0) instanceof SchemaPath) {
+ evaluator.success = true;
+ evaluator.path = (SchemaPath) nameArg;
+ }
+
+ return evaluator;
+ }
+
+ public ParquetCompareFunctionProcessor(String functionName) {
+ this.success = false;
+ this.functionName = functionName;
+ this.isEqualityFn = COMPARE_FUNCTIONS_TRANSPOSE_MAP
+ .containsKey(functionName)
+ && COMPARE_FUNCTIONS_TRANSPOSE_MAP.get(functionName).equals(
+ functionName);
+ }
+
+ public Object getValue() {
+ return value;
+ }
+
+ public boolean isSuccess() {
+ return success;
+ }
+
+ public SchemaPath getPath() {
+ return path;
+ }
+
+ public String getFunctionName() {
+ return functionName;
+ }
+
+ @Override
+ public Boolean visitCastExpression(CastExpression e,
+ LogicalExpression valueArg) throws RuntimeException {
+ if (e.getInput() instanceof CastExpression
+ || e.getInput() instanceof SchemaPath) {
+ return e.getInput().accept(this, valueArg);
+ }
+ return false;
+ }
+
+ @Override
+ public Boolean visitConvertExpression(ConvertExpression e,
+ LogicalExpression valueArg) throws RuntimeException {
+ if (e.getConvertFunction() == ConvertExpression.CONVERT_FROM
+ && e.getInput() instanceof SchemaPath) {
+ String encodingType = e.getEncodingType();
+ switch (encodingType) {
+ case "INT_BE":
+ case "INT":
+ case "UINT_BE":
+ case "UINT":
+ case "UINT4_BE":
+ case "UINT4":
+ if (valueArg instanceof IntExpression
+ && (isEqualityFn || encodingType.startsWith("U"))) {
+ this.value = ((IntExpression) valueArg).getInt();
+ }
+ break;
+ case "BIGINT_BE":
+ case "BIGINT":
+ case "UINT8_BE":
+ case "UINT8":
+ if (valueArg instanceof LongExpression
+ && (isEqualityFn || encodingType.startsWith("U"))) {
+ this.value = ((LongExpression) valueArg).getLong();
+ }
+ break;
+ case "FLOAT":
+ if (valueArg instanceof FloatExpression && isEqualityFn) {
+ this.value = ((FloatExpression) valueArg).getFloat();
+ }
+ break;
+ case "DOUBLE":
+ if (valueArg instanceof DoubleExpression && isEqualityFn) {
+ this.value = ((DoubleExpression) valueArg).getDouble();
+ }
+ break;
+ case "TIME_EPOCH":
+ case "TIME_EPOCH_BE":
+ if (valueArg instanceof TimeExpression) {
+ this.value = ((TimeExpression) valueArg).getTime();
+ }
+ break;
+ case "DATE_EPOCH":
+ case "DATE_EPOCH_BE":
+ if (valueArg instanceof DateExpression) {
+ long dateInMillis = ((DateExpression) valueArg).getDate();
+ this.value = (int) (DateTimeUtils.toJulianDayNumber(dateInMillis) + JULIAN_DAY_EPOC);
+ }
+ break;
+ case "BOOLEAN_BYTE":
+ if (valueArg instanceof BooleanExpression) {
+ this.value = ((BooleanExpression) valueArg).getBoolean();
+ }
+ break;
+ case "UTF8":
+ // let visitSchemaPath() handle this.
+ return e.getInput().accept(this, valueArg);
+ }
+
+ if (value != null) {
+ this.path = (SchemaPath) e.getInput();
+ return true;
+ }
+ }
+ return false;
+ }
+
+ @Override
+ public Boolean visitUnknown(LogicalExpression e, LogicalExpression valueArg)
+ throws RuntimeException {
+ return false;
+ }
+
+ @Override
+ public Boolean visitSchemaPath(SchemaPath path, LogicalExpression valueArg)
+ throws RuntimeException {
+ if (valueArg instanceof QuotedString) {
+ this.value = ((QuotedString) valueArg).value;
+ this.path = path;
+ return true;
+ }
+
+ if (valueArg instanceof IntExpression) {
+ this.value = ((IntExpression) valueArg).getInt();
+ this.path = path;
+ return true;
+ }
+
+ if (valueArg instanceof LongExpression) {
+ this.value = ((LongExpression) valueArg).getLong();
+ this.path = path;
+ return true;
+ }
+
+ if (valueArg instanceof FloatExpression) {
+ this.value = ((FloatExpression) valueArg).getFloat();
+ this.path = path;
+ return true;
+ }
+
+ if (valueArg instanceof DoubleExpression) {
+ this.value = ((DoubleExpression) valueArg).getDouble();
+ this.path = path;
+ return true;
+ }
+
+ if (valueArg instanceof BooleanExpression) {
+ this.value = ((BooleanExpression) valueArg).getBoolean();
+ this.path = path;
+ return true;
+ }
+
+ if (valueArg instanceof TimeExpression) {
+ this.value = ((TimeExpression) valueArg).getTime();
+ this.path = path;
+ return true;
+ }
+
+ if (valueArg instanceof TimeStampExpression) {
+ this.value = ((TimeStampExpression) valueArg).getTimeStamp();
+ this.path = path;
+ return true;
+ }
+
+ if (valueArg instanceof DateExpression) {
+ long dateInMillis = ((DateExpression) valueArg).getDate();
+ this.value = (int) (DateTimeUtils.toJulianDayNumber(dateInMillis) + JULIAN_DAY_EPOC);
+ this.path = path;
+ return true;
+ }
+
+ return false;
+ }
+
+ private static final ImmutableSet<Class<? extends LogicalExpression>> VALUE_EXPRESSION_CLASSES;
+ static {
+ ImmutableSet.Builder<Class<? extends LogicalExpression>> builder = ImmutableSet
+ .builder();
+ VALUE_EXPRESSION_CLASSES = builder.add(BooleanExpression.class)
+ .add(DateExpression.class).add(DoubleExpression.class)
+ .add(FloatExpression.class).add(IntExpression.class)
+ .add(LongExpression.class).add(QuotedString.class)
+ .add(TimeExpression.class).add(TimeStampExpression.class)
+ .add(DateExpression.class).build();
+ }
+
+ private static final ImmutableMap<String, String> COMPARE_FUNCTIONS_TRANSPOSE_MAP;
+ static {
+ ImmutableMap.Builder<String, String> builder = ImmutableMap.builder();
+ COMPARE_FUNCTIONS_TRANSPOSE_MAP = builder
+ // unary functions
+ .put("isnotnull", "isnotnull")
+ .put("isNotNull", "isNotNull")
+ .put("is not null", "is not null")
+ .put("isnull", "isnull")
+ .put("isNull", "isNull")
+ .put("is null", "is null")
+ // binary functions
+ .put("equal", "equal").put("not_equal", "not_equal")
+ .put("greater_than_or_equal_to", "less_than_or_equal_to")
+ .put("greater_than", "less_than")
+ .put("less_than_or_equal_to", "greater_than_or_equal_to")
+ .put("less_than", "greater_than").build();
+ }
+
+}
http://git-wip-us.apache.org/repos/asf/drill/blob/8ce1f033/exec/java-exec/src/main/java/org/apache/drill/exec/store/parquet/ParquetFilterBuilder.java
----------------------------------------------------------------------
diff --git a/exec/java-exec/src/main/java/org/apache/drill/exec/store/parquet/ParquetFilterBuilder.java b/exec/java-exec/src/main/java/org/apache/drill/exec/store/parquet/ParquetFilterBuilder.java
new file mode 100644
index 0000000..b613707
--- /dev/null
+++ b/exec/java-exec/src/main/java/org/apache/drill/exec/store/parquet/ParquetFilterBuilder.java
@@ -0,0 +1,284 @@
+/**
+ * Licensed to the Apache Software Foundation (ASF) under one
+ * or more contributor license agreements. See the NOTICE file
+ * distributed with this work for additional information
+ * regarding copyright ownership. The ASF licenses this file
+ * to you 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.
+ */
+package org.apache.drill.exec.store.parquet;
+
+import com.google.common.collect.ImmutableList;
+import org.apache.drill.common.expression.BooleanOperator;
+import org.apache.drill.common.expression.FunctionCall;
+import org.apache.drill.common.expression.LogicalExpression;
+import org.apache.drill.common.expression.SchemaPath;
+import org.apache.drill.common.expression.visitors.AbstractExprVisitor;
+import org.apache.parquet.filter2.predicate.FilterPredicate;
+import org.slf4j.Logger;
+import org.slf4j.LoggerFactory;
+import org.apache.parquet.filter2.predicate.FilterApi;
+import org.apache.parquet.filter2.predicate.FilterPredicate;
+
+import java.io.IOException;
+import java.util.List;
+
+public class ParquetFilterBuilder extends
+ AbstractExprVisitor<FilterPredicate, Void, RuntimeException> {
+ static final Logger logger = LoggerFactory
+ .getLogger(ParquetFilterBuilder.class);
+ private LogicalExpression le;
+ private boolean allExpressionsConverted = true;
+ private ParquetGroupScan groupScan;
+
+ public ParquetFilterBuilder(ParquetGroupScan groupScan, LogicalExpression conditionExp) {
+ this.le = conditionExp;
+ this.groupScan = groupScan;
+ }
+
+ public ParquetGroupScan parseTree() {
+ FilterPredicate predicate = le.accept(this, null);
+ try {
+ return this.groupScan.clone(predicate);
+ } catch (IOException e) {
+ logger.error("Failed to set Parquet filter", e);
+ return null;
+ }
+ }
+
+ public boolean areAllExpressionsConverted() {
+ return allExpressionsConverted;
+ }
+
+ @Override
+ public FilterPredicate visitUnknown(LogicalExpression e, Void value) throws RuntimeException {
+ allExpressionsConverted = false;
+ return null;
+ }
+
+ @Override
+ public FilterPredicate visitBooleanOperator(BooleanOperator op, Void value) {
+ List<LogicalExpression> args = op.args;
+ FilterPredicate nodePredicate = null;
+ String functionName = op.getName();
+ for (LogicalExpression arg : args) {
+ switch (functionName) {
+ case "booleanAnd":
+ case "booleanOr":
+ if (nodePredicate == null) {
+ nodePredicate = arg.accept(this, null);
+ } else {
+ FilterPredicate predicate = arg.accept(this, null);
+ if (predicate != null) {
+ nodePredicate = mergePredicates(functionName, nodePredicate, predicate);
+ } else {
+ // we can't include any part of the OR if any of the predicates cannot be converted
+ if (functionName == "booleanOr") {
+ nodePredicate = null;
+ }
+ allExpressionsConverted = false;
+ }
+ }
+ break;
+ }
+ }
+ return nodePredicate;
+ }
+
+ private FilterPredicate mergePredicates(String functionName,
+ FilterPredicate leftPredicate, FilterPredicate rightPredicate) {
+ if (leftPredicate != null && rightPredicate != null) {
+ if (functionName == "booleanAnd") {
+ return FilterApi.and(leftPredicate, rightPredicate);
+ }
+ else {
+ return FilterApi.or(leftPredicate, rightPredicate);
+ }
+ } else {
+ allExpressionsConverted = false;
+ if ("booleanAnd".equals(functionName)) {
+ return leftPredicate == null ? rightPredicate : leftPredicate;
+ }
+ }
+
+ return null;
+ }
+
+ @Override
+ public FilterPredicate visitFunctionCall(FunctionCall call, Void value) throws RuntimeException {
+ FilterPredicate predicate = null;
+ String functionName = call.getName();
+ ImmutableList<LogicalExpression> args = call.args;
+
+ if (ParquetCompareFunctionProcessor.isCompareFunction(functionName)) {
+ ParquetCompareFunctionProcessor processor = ParquetCompareFunctionProcessor
+ .process(call);
+ if (processor.isSuccess()) {
+ try {
+ predicate = createFilterPredicate(processor.getFunctionName(),
+ processor.getPath(), processor.getValue());
+ } catch (Exception e) {
+ logger.error("Failed to create Parquet filter", e);
+ }
+ }
+ } else {
+ switch (functionName) {
+ case "booleanAnd":
+ case "booleanOr":
+ FilterPredicate leftPredicate = args.get(0).accept(this, null);
+ FilterPredicate rightPredicate = args.get(1).accept(this, null);
+ predicate = mergePredicates(functionName, leftPredicate, rightPredicate);
+ break;
+ }
+ }
+
+ if (predicate == null) {
+ allExpressionsConverted = false;
+ }
+
+ return predicate;
+ }
+
+ private FilterPredicate createFilterPredicate(String functionName,
+ SchemaPath field, Object fieldValue) {
+ FilterPredicate filter = null;
+
+ // extract the field name
+ String fieldName = field.getAsUnescapedPath();
+ switch (functionName) {
+ case "equal":
+ if (fieldValue instanceof Long) {
+ filter = FilterApi.eq(FilterApi.longColumn(fieldName), (Long) fieldValue);
+ }
+ else if (fieldValue instanceof Integer) {
+ filter = FilterApi.eq(FilterApi.intColumn(fieldName), (Integer) fieldValue);
+ }
+ else if (fieldValue instanceof Float) {
+ filter = FilterApi.eq(FilterApi.floatColumn(fieldName), (Float) fieldValue);
+ }
+ else if (fieldValue instanceof Double) {
+ filter = FilterApi.eq(FilterApi.doubleColumn(fieldName), (Double) fieldValue);
+ }
+ else if (fieldValue instanceof Boolean) {
+ filter = FilterApi.eq(FilterApi.booleanColumn(fieldName), (Boolean) fieldValue);
+ }
+ break;
+ case "not_equal":
+ if (fieldValue instanceof Long) {
+ filter = FilterApi.notEq(FilterApi.longColumn(fieldName), (Long) fieldValue);
+ }
+ else if (fieldValue instanceof Integer) {
+ filter = FilterApi.notEq(FilterApi.intColumn(fieldName), (Integer) fieldValue);
+ }
+ else if (fieldValue instanceof Float) {
+ filter = FilterApi.notEq(FilterApi.floatColumn(fieldName), (Float) fieldValue);
+ }
+ else if (fieldValue instanceof Double) {
+ filter = FilterApi.notEq(FilterApi.doubleColumn(fieldName), (Double) fieldValue);
+ }
+ else if (fieldValue instanceof Boolean) {
+ filter = FilterApi.notEq(FilterApi.booleanColumn(fieldName), (Boolean) fieldValue);
+ }
+ break;
+ case "greater_than_or_equal_to":
+ if (fieldValue instanceof Long) {
+ filter = FilterApi.gtEq(FilterApi.longColumn(fieldName), (Long) fieldValue);
+ }
+ else if (fieldValue instanceof Integer) {
+ filter = FilterApi.gtEq(FilterApi.intColumn(fieldName), (Integer) fieldValue);
+ }
+ else if (fieldValue instanceof Float) {
+ filter = FilterApi.gtEq(FilterApi.floatColumn(fieldName), (Float) fieldValue);
+ }
+ else if (fieldValue instanceof Double) {
+ filter = FilterApi.gtEq(FilterApi.doubleColumn(fieldName), (Double) fieldValue);
+ }
+ break;
+ case "greater_than":
+ if (fieldValue instanceof Long) {
+ filter = FilterApi.gt(FilterApi.longColumn(fieldName), (Long) fieldValue);
+ }
+ else if (fieldValue instanceof Integer) {
+ filter = FilterApi.gt(FilterApi.intColumn(fieldName), (Integer) fieldValue);
+ }
+ else if (fieldValue instanceof Float) {
+ filter = FilterApi.gt(FilterApi.floatColumn(fieldName), (Float) fieldValue);
+ }
+ else if (fieldValue instanceof Double) {
+ filter = FilterApi.gt(FilterApi.doubleColumn(fieldName), (Double) fieldValue);
+ }
+ break;
+ case "less_than_or_equal_to":
+ if (fieldValue instanceof Long) {
+ filter = FilterApi.ltEq(FilterApi.longColumn(fieldName), (Long) fieldValue);
+ }
+ else if (fieldValue instanceof Integer) {
+ filter = FilterApi.ltEq(FilterApi.intColumn(fieldName), (Integer) fieldValue);
+ }
+ else if (fieldValue instanceof Float) {
+ filter = FilterApi.ltEq(FilterApi.floatColumn(fieldName), (Float) fieldValue);
+ }
+ else if (fieldValue instanceof Double) {
+ filter = FilterApi.ltEq(FilterApi.doubleColumn(fieldName), (Double) fieldValue);
+ }
+ break;
+ case "less_than":
+ if (fieldValue instanceof Long) {
+ filter = FilterApi.lt(FilterApi.longColumn(fieldName), (Long) fieldValue);
+ }
+ else if (fieldValue instanceof Integer) {
+ filter = FilterApi.lt(FilterApi.intColumn(fieldName), (Integer) fieldValue);
+ }
+ else if (fieldValue instanceof Float) {
+ filter = FilterApi.lt(FilterApi.floatColumn(fieldName), (Float) fieldValue);
+ }
+ else if (fieldValue instanceof Double) {
+ filter = FilterApi.lt(FilterApi.doubleColumn(fieldName), (Double) fieldValue);
+ }
+ break;
+ case "isnull":
+ case "isNull":
+ case "is null":
+ if (fieldValue instanceof Long) {
+ filter = FilterApi.eq(FilterApi.longColumn(fieldName), null);
+ }
+ else if (fieldValue instanceof Integer) {
+ filter = FilterApi.eq(FilterApi.intColumn(fieldName), null);
+ }
+ else if (fieldValue instanceof Float) {
+ filter = FilterApi.eq(FilterApi.floatColumn(fieldName), null);
+ }
+ else if (fieldValue instanceof Double) {
+ filter = FilterApi.eq(FilterApi.doubleColumn(fieldName), null);
+ }
+ break;
+ case "isnotnull":
+ case "isNotNull":
+ case "is not null":
+ if (fieldValue instanceof Long) {
+ filter = FilterApi.notEq(FilterApi.longColumn(fieldName), null);
+ }
+ else if (fieldValue instanceof Integer) {
+ filter = FilterApi.notEq(FilterApi.intColumn(fieldName), null);
+ }
+ else if (fieldValue instanceof Float) {
+ filter = FilterApi.notEq(FilterApi.floatColumn(fieldName), null);
+ }
+ else if (fieldValue instanceof Double) {
+ filter = FilterApi.notEq(FilterApi.doubleColumn(fieldName), null);
+ }
+ break;
+ }
+
+ return filter;
+ }
+}
http://git-wip-us.apache.org/repos/asf/drill/blob/8ce1f033/exec/java-exec/src/main/java/org/apache/drill/exec/store/parquet/ParquetPushDownFilter.java
----------------------------------------------------------------------
diff --git a/exec/java-exec/src/main/java/org/apache/drill/exec/store/parquet/ParquetPushDownFilter.java b/exec/java-exec/src/main/java/org/apache/drill/exec/store/parquet/ParquetPushDownFilter.java
new file mode 100644
index 0000000..10c817b
--- /dev/null
+++ b/exec/java-exec/src/main/java/org/apache/drill/exec/store/parquet/ParquetPushDownFilter.java
@@ -0,0 +1,142 @@
+/**
+ * Licensed to the Apache Software Foundation (ASF) under one
+ * or more contributor license agreements. See the NOTICE file
+ * distributed with this work for additional information
+ * regarding copyright ownership. The ASF licenses this file
+ * to you 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.
+ */
+package org.apache.drill.exec.store.parquet;
+
+import org.apache.calcite.plan.RelOptRuleCall;
+import org.apache.calcite.plan.RelOptRuleOperand;
+import org.apache.calcite.plan.RelOptUtil;
+import org.apache.calcite.rel.RelNode;
+import org.apache.calcite.rex.RexNode;
+import org.apache.drill.common.expression.LogicalExpression;
+import org.apache.drill.exec.ExecConstants;
+import org.apache.drill.exec.ops.OptimizerRulesContext;
+import org.apache.drill.exec.ops.QueryContext;
+import org.apache.drill.exec.planner.logical.DrillOptiq;
+import org.apache.drill.exec.planner.logical.DrillParseContext;
+import org.apache.drill.exec.planner.logical.RelOptHelper;
+import org.apache.drill.exec.planner.physical.FilterPrel;
+import org.apache.drill.exec.planner.physical.PrelUtil;
+import org.apache.drill.exec.planner.physical.ProjectPrel;
+import org.apache.drill.exec.planner.physical.ScanPrel;
+import org.apache.drill.exec.store.StoragePluginOptimizerRule;
+
+import com.google.common.collect.ImmutableList;
+
+public abstract class ParquetPushDownFilter extends StoragePluginOptimizerRule {
+ public static final StoragePluginOptimizerRule getFilterOnProject(final OptimizerRulesContext context){
+ return new ParquetPushDownFilter(
+ RelOptHelper.some(FilterPrel.class, RelOptHelper.some(ProjectPrel.class, RelOptHelper.any(ScanPrel.class))),
+ "ParquetPushDownFilter:Filter_On_Project", context) {
+
+ @Override
+ public boolean matches(RelOptRuleCall call) {
+ if (!enabled) {
+ return false;
+ }
+ final ScanPrel scan = call.rel(2);
+ if (scan.getGroupScan() instanceof ParquetGroupScan) {
+ return super.matches(call);
+ }
+ return false;
+ }
+
+ @Override
+ public void onMatch(RelOptRuleCall call) {
+ final FilterPrel filterRel = call.rel(0);
+ final ProjectPrel projectRel = call.rel(1);
+ final ScanPrel scanRel = call.rel(2);
+ doOnMatch(call, filterRel, projectRel, scanRel);
+ };
+ };
+ }
+
+ public static final StoragePluginOptimizerRule getFilterOnScan(final OptimizerRulesContext context){
+ return new ParquetPushDownFilter(
+ RelOptHelper.some(FilterPrel.class, RelOptHelper.any(ScanPrel.class)),
+ "ParquetPushDownFilter:Filter_On_Scan", context) {
+
+ @Override
+ public boolean matches(RelOptRuleCall call) {
+ if (!enabled) {
+ return false;
+ }
+ final ScanPrel scan = call.rel(1);
+ if (scan.getGroupScan() instanceof ParquetGroupScan) {
+ return super.matches(call);
+ }
+ return false;
+ }
+
+ @Override
+ public void onMatch(RelOptRuleCall call) {
+ final FilterPrel filterRel = call.rel(0);
+ final ScanPrel scanRel = call.rel(1);
+ doOnMatch(call, filterRel, null, scanRel);
+ }
+ };
+ }
+
+ private final OptimizerRulesContext context;
+ // private final boolean useNewReader;
+ protected final boolean enabled;
+
+ private ParquetPushDownFilter(RelOptRuleOperand operand, String id, OptimizerRulesContext context) {
+ super(operand, id);
+ this.context = context;
+ this.enabled = context.getPlannerSettings().isParquetFilterPushEnabled();
+ // this.useNewReader = context.getPlannerSettings()getOptions().getOption(ExecConstants.PARQUET_NEW_RECORD_READER).bool_val;
+ }
+
+ protected void doOnMatch(RelOptRuleCall call, FilterPrel filter, ProjectPrel project, ScanPrel scan) {
+ ParquetGroupScan groupScan = (ParquetGroupScan) scan.getGroupScan();
+ if (groupScan.getFilter() != null) {
+ return;
+ }
+
+ RexNode condition = null;
+ if(project == null){
+ condition = filter.getCondition();
+ }else{
+ // get the filter as if it were below the projection.
+ condition = RelOptUtil.pushFilterPastProject(filter.getCondition(), project);
+ }
+
+ LogicalExpression conditionExp = DrillOptiq.toDrill(
+ new DrillParseContext(PrelUtil.getPlannerSettings(call.getPlanner())), scan, condition);
+ ParquetFilterBuilder parquetFilterBuilder = new ParquetFilterBuilder(groupScan,
+ conditionExp);
+ ParquetGroupScan newGroupScan = parquetFilterBuilder.parseTree();
+ if (newGroupScan == null) {
+ return; // no filter pushdown so nothing to apply.
+ }
+
+ final ScanPrel newScanPrel = ScanPrel.create(scan, filter.getTraitSet(),
+ newGroupScan, scan.getRowType());
+
+ RelNode inputPrel = newScanPrel;
+
+ if(project != null){
+ inputPrel = project.copy(project.getTraitSet(), ImmutableList.of(inputPrel));
+ }
+
+ // Normally we could eliminate the filter if all expressions were pushed down;
+ // however, the Parquet filter implementation is type specific (whereas Drill is not)
+ final RelNode newFilter = filter.copy(filter.getTraitSet(), ImmutableList.of(inputPrel));
+ call.transformTo(newFilter);
+ }
+}