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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 spark.storage
import java.io.{Externalizable, ObjectInput, ObjectOutput}
import akka.actor.ActorRef
private[storage] object BlockManagerMessages {
//////////////////////////////////////////////////////////////////////////////////
// Messages from the master to slaves.
//////////////////////////////////////////////////////////////////////////////////
sealed trait ToBlockManagerSlave
// Remove a block from the slaves that have it. This can only be used to remove
// blocks that the master knows about.
case class RemoveBlock(blockId: String) extends ToBlockManagerSlave
// Remove all blocks belonging to a specific RDD.
case class RemoveRdd(rddId: Int) extends ToBlockManagerSlave
//////////////////////////////////////////////////////////////////////////////////
// Messages from slaves to the master.
//////////////////////////////////////////////////////////////////////////////////
sealed trait ToBlockManagerMaster
case class RegisterBlockManager(
blockManagerId: BlockManagerId,
maxMemSize: Long,
sender: ActorRef)
extends ToBlockManagerMaster
case class HeartBeat(blockManagerId: BlockManagerId) extends ToBlockManagerMaster
class UpdateBlockInfo(
var blockManagerId: BlockManagerId,
var blockId: String,
var storageLevel: StorageLevel,
var memSize: Long,
var diskSize: Long)
extends ToBlockManagerMaster
with Externalizable {
def this() = this(null, null, null, 0, 0) // For deserialization only
override def writeExternal(out: ObjectOutput) {
blockManagerId.writeExternal(out)
out.writeUTF(blockId)
storageLevel.writeExternal(out)
out.writeLong(memSize)
out.writeLong(diskSize)
}
override def readExternal(in: ObjectInput) {
blockManagerId = BlockManagerId(in)
blockId = in.readUTF()
storageLevel = StorageLevel(in)
memSize = in.readLong()
diskSize = in.readLong()
}
}
object UpdateBlockInfo {
def apply(blockManagerId: BlockManagerId,
blockId: String,
storageLevel: StorageLevel,
memSize: Long,
diskSize: Long): UpdateBlockInfo = {
new UpdateBlockInfo(blockManagerId, blockId, storageLevel, memSize, diskSize)
}
// For pattern-matching
def unapply(h: UpdateBlockInfo): Option[(BlockManagerId, String, StorageLevel, Long, Long)] = {
Some((h.blockManagerId, h.blockId, h.storageLevel, h.memSize, h.diskSize))
}
}
case class GetLocations(blockId: String) extends ToBlockManagerMaster
case class GetLocationsMultipleBlockIds(blockIds: Array[String]) extends ToBlockManagerMaster
case class GetPeers(blockManagerId: BlockManagerId, size: Int) extends ToBlockManagerMaster
case class RemoveExecutor(execId: String) extends ToBlockManagerMaster
case object StopBlockManagerMaster extends ToBlockManagerMaster
case object GetMemoryStatus extends ToBlockManagerMaster
case object ExpireDeadHosts extends ToBlockManagerMaster
case object GetStorageStatus extends ToBlockManagerMaster
}
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