1 files changed, 70 insertions, 0 deletions
diff --git a/exec/java-exec/src/main/java/org/apache/drill/exec/resourcemgr/config/ResourcePool.java b/exec/java-exec/src/main/java/org/apache/drill/exec/resourcemgr/config/ResourcePool.java
new file mode 100644
index 000000000..c2f851224
--- /dev/null
+++ b/exec/java-exec/src/main/java/org/apache/drill/exec/resourcemgr/config/ResourcePool.java
@@ -0,0 +1,70 @@
+/*
+ * 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.resourcemgr.config;
+
+import org.apache.drill.exec.ops.QueryContext;
+import org.apache.drill.exec.resourcemgr.config.selectors.ResourcePoolSelector;
+
+import java.util.List;
+
+/**
+ * Interface which defines an implementation of ResourcePool configuration for {@link ResourcePoolTree}
+ */
+public interface ResourcePool {
+  String getPoolName();
+
+  boolean isLeafPool();
+
+  boolean isDefaultPool();
+
+  // Only valid for leaf pool since it will have a queue assigned to it with this configuration
+  long getMaxQueryMemoryPerNode();
+
+  /**
+   * Evaluates this pool selector to see if the query can be admitted in this pool. If yes then evaluates all
+   * the child pools selectors as well. During traversal it builds the QueueAssignment result which consists of all
+   * the selected leaf pools and all rejected intermediate pools.
+   * @param assignmentResult
+   * @param queryContext
+   */
+  void visitAndSelectPool(QueueAssignmentResult assignmentResult, QueryContext queryContext);
+
+  /**
+   * @return Percentage of memory share assigned to this pool
+   */
+  double getPoolMemoryShare();
+
+  long getPoolMemoryInMB(int numClusterNodes);
+
+  /**
+   * Only valid for leaf pool.
+   * @return Returns queue configuration assigned to this leaf pool
+   */
+  QueryQueueConfig getQueryQueue();
+
+  /**
+   * @return Full path of the resource pool from root to this pool
+   */
+  String getFullPath();
+
+  ResourcePool getParentPool();
+
+  List<ResourcePool> getChildPools();
+
+  ResourcePoolSelector getSelector();
+}