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/*
* 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.memory
import scala.collection.mutable
import org.apache.spark.SparkConf
import org.apache.spark.storage.{BlockStatus, BlockId}
class GrantEverythingMemoryManager(conf: SparkConf) extends MemoryManager(conf, numCores = 1) {
private[memory] override def doAcquireExecutionMemory(
numBytes: Long,
evictedBlocks: mutable.Buffer[(BlockId, BlockStatus)]): Long = synchronized {
if (oom) {
oom = false
0
} else {
_executionMemoryUsed += numBytes // To suppress warnings when freeing unallocated memory
numBytes
}
}
override def acquireStorageMemory(
blockId: BlockId,
numBytes: Long,
evictedBlocks: mutable.Buffer[(BlockId, BlockStatus)]): Boolean = true
override def acquireUnrollMemory(
blockId: BlockId,
numBytes: Long,
evictedBlocks: mutable.Buffer[(BlockId, BlockStatus)]): Boolean = true
override def releaseStorageMemory(numBytes: Long): Unit = { }
override def maxExecutionMemory: Long = Long.MaxValue
override def maxStorageMemory: Long = Long.MaxValue
private var oom = false
def markExecutionAsOutOfMemory(): Unit = {
oom = true
}
}
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