1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
|
/*
* 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.network.netty
import java.nio.ByteBuffer
import scala.collection.JavaConverters._
import scala.concurrent.{Future, Promise}
import scala.reflect.ClassTag
import org.apache.spark.{SecurityManager, SparkConf}
import org.apache.spark.network._
import org.apache.spark.network.buffer.ManagedBuffer
import org.apache.spark.network.client.{RpcResponseCallback, TransportClientBootstrap, TransportClientFactory}
import org.apache.spark.network.sasl.{SaslClientBootstrap, SaslServerBootstrap}
import org.apache.spark.network.server._
import org.apache.spark.network.shuffle.{BlockFetchingListener, OneForOneBlockFetcher, RetryingBlockFetcher}
import org.apache.spark.network.shuffle.protocol.UploadBlock
import org.apache.spark.network.util.JavaUtils
import org.apache.spark.serializer.JavaSerializer
import org.apache.spark.storage.{BlockId, StorageLevel}
import org.apache.spark.util.Utils
/**
* A BlockTransferService that uses Netty to fetch a set of blocks at at time.
*/
private[spark] class NettyBlockTransferService(
conf: SparkConf,
securityManager: SecurityManager,
override val hostName: String,
numCores: Int)
extends BlockTransferService {
// TODO: Don't use Java serialization, use a more cross-version compatible serialization format.
private val serializer = new JavaSerializer(conf)
private val authEnabled = securityManager.isAuthenticationEnabled()
private val transportConf = SparkTransportConf.fromSparkConf(conf, "shuffle", numCores)
private[this] var transportContext: TransportContext = _
private[this] var server: TransportServer = _
private[this] var clientFactory: TransportClientFactory = _
private[this] var appId: String = _
override def init(blockDataManager: BlockDataManager): Unit = {
val rpcHandler = new NettyBlockRpcServer(conf.getAppId, serializer, blockDataManager)
var serverBootstrap: Option[TransportServerBootstrap] = None
var clientBootstrap: Option[TransportClientBootstrap] = None
if (authEnabled) {
serverBootstrap = Some(new SaslServerBootstrap(transportConf, securityManager))
clientBootstrap = Some(new SaslClientBootstrap(transportConf, conf.getAppId, securityManager,
securityManager.isSaslEncryptionEnabled()))
}
transportContext = new TransportContext(transportConf, rpcHandler)
clientFactory = transportContext.createClientFactory(clientBootstrap.toSeq.asJava)
server = createServer(serverBootstrap.toList)
appId = conf.getAppId
logInfo(s"Server created on ${hostName}:${server.getPort}")
}
/** Creates and binds the TransportServer, possibly trying multiple ports. */
private def createServer(bootstraps: List[TransportServerBootstrap]): TransportServer = {
def startService(port: Int): (TransportServer, Int) = {
val server = transportContext.createServer(hostName, port, bootstraps.asJava)
(server, server.getPort)
}
val portToTry = conf.getInt("spark.blockManager.port", 0)
Utils.startServiceOnPort(portToTry, startService, conf, getClass.getName)._1
}
override def fetchBlocks(
host: String,
port: Int,
execId: String,
blockIds: Array[String],
listener: BlockFetchingListener): Unit = {
logTrace(s"Fetch blocks from $host:$port (executor id $execId)")
try {
val blockFetchStarter = new RetryingBlockFetcher.BlockFetchStarter {
override def createAndStart(blockIds: Array[String], listener: BlockFetchingListener) {
val client = clientFactory.createClient(host, port)
new OneForOneBlockFetcher(client, appId, execId, blockIds.toArray, listener).start()
}
}
val maxRetries = transportConf.maxIORetries()
if (maxRetries > 0) {
// Note this Fetcher will correctly handle maxRetries == 0; we avoid it just in case there's
// a bug in this code. We should remove the if statement once we're sure of the stability.
new RetryingBlockFetcher(transportConf, blockFetchStarter, blockIds, listener).start()
} else {
blockFetchStarter.createAndStart(blockIds, listener)
}
} catch {
case e: Exception =>
logError("Exception while beginning fetchBlocks", e)
blockIds.foreach(listener.onBlockFetchFailure(_, e))
}
}
override def port: Int = server.getPort
override def uploadBlock(
hostname: String,
port: Int,
execId: String,
blockId: BlockId,
blockData: ManagedBuffer,
level: StorageLevel,
classTag: ClassTag[_]): Future[Unit] = {
val result = Promise[Unit]()
val client = clientFactory.createClient(hostname, port)
// StorageLevel and ClassTag are serialized as bytes using our JavaSerializer.
// Everything else is encoded using our binary protocol.
val metadata = JavaUtils.bufferToArray(serializer.newInstance().serialize((level, classTag)))
// Convert or copy nio buffer into array in order to serialize it.
val array = JavaUtils.bufferToArray(blockData.nioByteBuffer())
client.sendRpc(new UploadBlock(appId, execId, blockId.toString, metadata, array).toByteBuffer,
new RpcResponseCallback {
override def onSuccess(response: ByteBuffer): Unit = {
logTrace(s"Successfully uploaded block $blockId")
result.success((): Unit)
}
override def onFailure(e: Throwable): Unit = {
logError(s"Error while uploading block $blockId", e)
result.failure(e)
}
})
result.future
}
override def close(): Unit = {
if (server != null) {
server.close()
}
if (clientFactory != null) {
clientFactory.close()
}
}
}
|
