Github user Vlad-Storona commented on a diff in the pull request:
https://github.com/apache/drill/pull/774#discussion_r148628656
--- Diff:
contrib/storage-opentsdb/src/main/java/org/apache/drill/exec/store/openTSDB/schema/OpenTSDBSchemaFactory.java
---
@@ -0,0 +1,126 @@
+/*
+ * 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.openTSDB.schema;
+
+import com.google.common.collect.Maps;
+import org.apache.calcite.schema.SchemaPlus;
+import org.apache.calcite.schema.Table;
+import org.apache.drill.exec.planner.logical.CreateTableEntry;
+import org.apache.drill.exec.planner.logical.DrillTable;
+import org.apache.drill.exec.planner.logical.DynamicDrillTable;
+import org.apache.drill.exec.store.AbstractSchema;
+import org.apache.drill.exec.store.SchemaConfig;
+import org.apache.drill.exec.store.SchemaFactory;
+import org.apache.drill.exec.store.openTSDB.DrillOpenTSDBTable;
+import org.apache.drill.exec.store.openTSDB.OpenTSDBScanSpec;
+import org.apache.drill.exec.store.openTSDB.OpenTSDBStoragePlugin;
+import org.apache.drill.exec.store.openTSDB.OpenTSDBStoragePluginConfig;
+import org.apache.drill.exec.store.openTSDB.client.Schema;
+import org.slf4j.Logger;
+import org.slf4j.LoggerFactory;
+
+import java.io.IOException;
+import java.util.Collections;
+import java.util.List;
+import java.util.Map;
+import java.util.Set;
+
+import static org.apache.drill.exec.store.openTSDB.Util.getValidTableName;
+
+public class OpenTSDBSchemaFactory implements SchemaFactory {
--- End diff --
It must be shared among several queries.
---
