blob: 8370b61145e450ed1eb38e2d389161e887f6671a (
plain) (
blame)
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
|
/*
* 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.mesos
import java.nio.ByteBuffer
import org.apache.mesos.protobuf.ByteString
import org.apache.spark.internal.Logging
/**
* Wrapper for serializing the data sent when launching Mesos tasks.
*/
private[spark] case class MesosTaskLaunchData(
serializedTask: ByteBuffer,
attemptNumber: Int) extends Logging {
def toByteString: ByteString = {
val dataBuffer = ByteBuffer.allocate(4 + serializedTask.limit)
dataBuffer.putInt(attemptNumber)
dataBuffer.put(serializedTask)
dataBuffer.rewind
logDebug(s"ByteBuffer size: [${dataBuffer.remaining}]")
ByteString.copyFrom(dataBuffer)
}
}
private[spark] object MesosTaskLaunchData extends Logging {
def fromByteString(byteString: ByteString): MesosTaskLaunchData = {
val byteBuffer = byteString.asReadOnlyByteBuffer()
logDebug(s"ByteBuffer size: [${byteBuffer.remaining}]")
val attemptNumber = byteBuffer.getInt // updates the position by 4 bytes
val serializedTask = byteBuffer.slice() // subsequence starting at the current position
MesosTaskLaunchData(serializedTask, attemptNumber)
}
}
|