1 files changed, 66 insertions, 0 deletions
diff --git a/exec/java-exec/src/main/java/org/apache/drill/exec/planner/fragment/DefaultQueryParallelizer.java b/exec/java-exec/src/main/java/org/apache/drill/exec/planner/fragment/DefaultQueryParallelizer.java
new file mode 100644
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+++ b/exec/java-exec/src/main/java/org/apache/drill/exec/planner/fragment/DefaultQueryParallelizer.java
@@ -0,0 +1,66 @@
+/*
+ * 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.planner.fragment;
+
+import org.apache.drill.exec.ops.QueryContext;
+import org.apache.drill.exec.physical.base.PhysicalOperator;
+import org.apache.drill.exec.proto.CoordinationProtos.DrillbitEndpoint;
+import org.apache.drill.exec.util.MemoryAllocationUtilities;
+
+import java.util.Collection;
+import java.util.List;
+import java.util.Set;
+import java.util.function.BiFunction;
+
+/**
+ * Non RM version of the parallelizer. The parallelization logic is fully inherited from SimpleParallelizer.
+ * The memory computation of the operators is based on the earlier logic to assign memory for the buffered
+ * operators.
+ */
+public class DefaultQueryParallelizer extends SimpleParallelizer {
+  private final boolean planHasMemory;
+  private final QueryContext queryContext;
+
+  public DefaultQueryParallelizer(boolean memoryAvailableInPlan, QueryContext queryContext) {
+    super(queryContext);
+    this.planHasMemory = memoryAvailableInPlan;
+    this.queryContext = queryContext;
+  }
+
+  public DefaultQueryParallelizer(boolean memoryPlanning, long parallelizationThreshold, int maxWidthPerNode,
+                                  int maxGlobalWidth, double affinityFactor) {
+    super(parallelizationThreshold, maxWidthPerNode, maxGlobalWidth, affinityFactor);
+    this.planHasMemory = memoryPlanning;
+    this.queryContext = null;
+  }
+
+  @Override
+  public void adjustMemory(PlanningSet planningSet, Set<Wrapper> roots,
+                           Collection<DrillbitEndpoint> activeEndpoints) {
+    if (planHasMemory) {
+      return;
+    }
+    List<PhysicalOperator> bufferedOpers = planningSet.getRootWrapper().getNode().getBufferedOperators();
+    MemoryAllocationUtilities.setupBufferedOpsMemoryAllocations(planHasMemory, bufferedOpers, queryContext);
+  }
+
+  @Override
+  protected BiFunction<DrillbitEndpoint, PhysicalOperator, Long> getMemory() {
+    return (endpoint, operator) -> operator.getMaxAllocation();
+  }
+}