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
|
/*
* 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.deploy.worker
import org.apache.spark.{Logging, SparkConf, SecurityManager}
import org.apache.spark.network.TransportContext
import org.apache.spark.network.netty.SparkTransportConf
import org.apache.spark.network.sasl.SaslRpcHandler
import org.apache.spark.network.server.TransportServer
import org.apache.spark.network.shuffle.ExternalShuffleBlockHandler
/**
* Provides a server from which Executors can read shuffle files (rather than reading directly from
* each other), to provide uninterrupted access to the files in the face of executors being turned
* off or killed.
*
* Optionally requires SASL authentication in order to read. See [[SecurityManager]].
*/
private[worker]
class StandaloneWorkerShuffleService(sparkConf: SparkConf, securityManager: SecurityManager)
extends Logging {
private val enabled = sparkConf.getBoolean("spark.shuffle.service.enabled", false)
private val port = sparkConf.getInt("spark.shuffle.service.port", 7337)
private val useSasl: Boolean = securityManager.isAuthenticationEnabled()
private val transportConf = SparkTransportConf.fromSparkConf(sparkConf, numUsableCores = 0)
private val blockHandler = new ExternalShuffleBlockHandler(transportConf)
private val transportContext: TransportContext = {
val handler = if (useSasl) new SaslRpcHandler(blockHandler, securityManager) else blockHandler
new TransportContext(transportConf, handler)
}
private var server: TransportServer = _
/** Starts the external shuffle service if the user has configured us to. */
def startIfEnabled() {
if (enabled) {
require(server == null, "Shuffle server already started")
logInfo(s"Starting shuffle service on port $port with useSasl = $useSasl")
server = transportContext.createServer(port)
}
}
def stop() {
if (enabled && server != null) {
server.close()
server = null
}
}
}
|
