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Diffstat (limited to 'core/src/main/scala/org/apache/spark/scheduler/cluster/SchedulerBackend.scala')
-rw-r--r-- | core/src/main/scala/org/apache/spark/scheduler/cluster/SchedulerBackend.scala | 37 |
1 files changed, 37 insertions, 0 deletions
diff --git a/core/src/main/scala/org/apache/spark/scheduler/cluster/SchedulerBackend.scala b/core/src/main/scala/org/apache/spark/scheduler/cluster/SchedulerBackend.scala new file mode 100644 index 0000000000..bde2f73df4 --- /dev/null +++ b/core/src/main/scala/org/apache/spark/scheduler/cluster/SchedulerBackend.scala @@ -0,0 +1,37 @@ +/* + * 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.spark.scheduler.cluster + +import org.apache.spark.{SparkContext, Utils} + +/** + * A backend interface for cluster scheduling systems that allows plugging in different ones under + * ClusterScheduler. We assume a Mesos-like model where the application gets resource offers as + * machines become available and can launch tasks on them. + */ +private[spark] trait SchedulerBackend { + def start(): Unit + def stop(): Unit + def reviveOffers(): Unit + def defaultParallelism(): Int + + // Memory used by each executor (in megabytes) + protected val executorMemory: Int = SparkContext.executorMemoryRequested + + // TODO: Probably want to add a killTask too +} |