| /* |
| * 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.livy.server.recovery |
| |
| import scala.reflect.ClassTag |
| |
| import org.apache.livy.LivyConf |
| |
| /** |
| * This is a blackhole implementation of StateStore. |
| * Livy will use this when session recovery is disabled. |
| */ |
| class BlackholeStateStore(livyConf: LivyConf) extends StateStore(livyConf) { |
| def set(key: String, value: Object): Unit = {} |
| |
| def get[T: ClassTag](key: String): Option[T] = None |
| |
| def getChildren(key: String): Seq[String] = List.empty[String] |
| |
| def remove(key: String): Unit = {} |
| } |