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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.flink.runtime.clusterframework;
import org.apache.flink.configuration.Configuration;
import org.apache.flink.configuration.ResourceManagerOptions;
import org.apache.flink.runtime.taskexecutor.TaskManagerServices;
import org.apache.flink.util.Preconditions;
import java.util.HashMap;
import java.util.Map;
/**
* This class describes the basic parameters for launching a TaskManager process.
*/
public class ContaineredTaskManagerParameters implements java.io.Serializable {
private static final long serialVersionUID = -3096987654278064670L;
/** Total container cpu cores. */
private final double totalContainerCpuCore;
/** Total container memory, in bytes. */
private final long totalContainerMemoryMB;
/** Heap size to be used for the Java process. */
private final long taskManagerHeapSizeMB;
/** Young generation size for heap */
private int youngMemoryMB;
/** Direct memory limit for the Java process. */
private final long taskManagerDirectMemoryLimitMB;
/** The number of slots per TaskManager. */
private final int numSlots;
/** Environment variables to add to the Java process. */
private final HashMap taskManagerEnv;
public ContaineredTaskManagerParameters(
long totalContainerMemoryMB,
long taskManagerHeapSizeMB,
long taskManagerDirectMemoryLimitMB,
int numSlots,
HashMap taskManagerEnv) {
this(totalContainerMemoryMB, taskManagerHeapSizeMB, taskManagerDirectMemoryLimitMB, numSlots, taskManagerEnv, 0);
}
public ContaineredTaskManagerParameters(
long totalContainerMemoryMB,
long taskManagerHeapSizeMB,
long taskManagerDirectMemoryLimitMB,
int numSlots,
HashMap taskManagerEnv,
int youngMemoryMB) {
this(totalContainerMemoryMB, taskManagerHeapSizeMB, taskManagerDirectMemoryLimitMB, numSlots, taskManagerEnv, youngMemoryMB, -1.0);
}
public ContaineredTaskManagerParameters(
long totalContainerMemoryMB,
long taskManagerHeapSizeMB,
long taskManagerDirectMemoryLimitMB,
int numSlots,
HashMap taskManagerEnv,
int youngMemoryMB,
double totalContainerCpuCore) {
this.totalContainerMemoryMB = totalContainerMemoryMB;
this.taskManagerHeapSizeMB = taskManagerHeapSizeMB;
this.taskManagerDirectMemoryLimitMB = taskManagerDirectMemoryLimitMB;
this.numSlots = numSlots;
this.taskManagerEnv = taskManagerEnv;
this.youngMemoryMB = youngMemoryMB;
this.totalContainerCpuCore = totalContainerCpuCore;
}
// ------------------------------------------------------------------------
public long taskManagerTotalMemoryMB() {
return totalContainerMemoryMB;
}
public long taskManagerHeapSizeMB() {
return taskManagerHeapSizeMB;
}
public int getYoungMemoryMB() {
return youngMemoryMB;
}
public long taskManagerDirectMemoryLimitMB() {
return taskManagerDirectMemoryLimitMB;
}
public int numSlots() {
return numSlots;
}
public Map taskManagerEnv() {
return taskManagerEnv;
}
public double taskManagerTotalCpuCore() {
return totalContainerCpuCore;
}
// ------------------------------------------------------------------------
@Override
public String toString() {
return "TaskManagerParameters {" +
"totalContainerMemory=" + totalContainerMemoryMB +
", taskManagerHeapSize=" + taskManagerHeapSizeMB +
", youngMemoryMB=" + youngMemoryMB +
", taskManagerDirectMemoryLimit=" + taskManagerDirectMemoryLimitMB +
", numSlots=" + numSlots +
", taskManagerEnv=" + taskManagerEnv +
'}';
}
// ------------------------------------------------------------------------
// Factory
// ------------------------------------------------------------------------
/**
* Calcuate cutoff memory size used by container, it will throw an {@link IllegalArgumentException}
* if the config is invalid or return the cutoff value if valid.
*
* @param config The Flink configuration.
* @param containerMemoryMB The size of the complete container, in megabytes.
*
* @return cutoff memory size used by container.
*/
public static long calculateCutoffMB(Configuration config, long containerMemoryMB) {
Preconditions.checkArgument(containerMemoryMB > 0);
// (1) check cutoff ratio
final float memoryCutoffRatio = config.getFloat(
ResourceManagerOptions.CONTAINERIZED_HEAP_CUTOFF_RATIO);
if (memoryCutoffRatio >= 1 || memoryCutoffRatio <= 0) {
throw new IllegalArgumentException("The configuration value '"
+ ResourceManagerOptions.CONTAINERIZED_HEAP_CUTOFF_RATIO.key() + "' must be between 0 and 1. Value given="
+ memoryCutoffRatio);
}
// (2) check min cutoff value
final int minCutoff = config.getInteger(
ResourceManagerOptions.CONTAINERIZED_HEAP_CUTOFF_MIN);
if (minCutoff >= containerMemoryMB) {
throw new IllegalArgumentException("The configuration value '"
+ ResourceManagerOptions.CONTAINERIZED_HEAP_CUTOFF_MIN.key() + "'='" + minCutoff
+ "' is larger than the total container memory " + containerMemoryMB);
}
// (3) check between heap and off-heap
long cutoff = (long) (containerMemoryMB * memoryCutoffRatio);
if (cutoff < minCutoff) {
cutoff = minCutoff;
}
return cutoff;
}
/**
* Computes the parameters to be used to start a TaskManager Java process.
*
* @param config The Flink configuration.
* @param containerMemoryMB The size of the complete container, in megabytes.
* @return The parameters to start the TaskManager processes with.
*/
public static ContaineredTaskManagerParameters create(
Configuration config,
long containerMemoryMB,
int numSlots) {
// (1) try to compute how much memory used by container
final long cutoffMB = calculateCutoffMB(config, containerMemoryMB);
// (2) split the remaining Java memory between heap and off-heap
final long heapSizeMB = TaskManagerServices.calculateHeapSizeMB(containerMemoryMB - cutoffMB, config);
// use the cut-off memory for off-heap (that was its intention)
final long offHeapSizeMB = containerMemoryMB - heapSizeMB;
return create(config,
containerMemoryMB, (int)heapSizeMB, (int)offHeapSizeMB, numSlots, 0);
}
public static ContaineredTaskManagerParameters create(
Configuration config,
long containerMemorySizeMB,
int heapMemorySizeMB,
int directMemorySizeMB,
int numSlots,
int youngMemorySizeMB) {
return create(config, containerMemorySizeMB, heapMemorySizeMB, directMemorySizeMB, numSlots, youngMemorySizeMB, -1.0);
}
public static ContaineredTaskManagerParameters create(
Configuration config,
long containerMemorySizeMB,
int heapMemorySizeMB,
int directMemorySizeMB,
int numSlots,
int youngMemorySizeMB,
double containerCpuCore) {
// obtain the additional environment variables from the configuration
final HashMap envVars = new HashMap<>();
final String prefix = ResourceManagerOptions.CONTAINERIZED_TASK_MANAGER_ENV_PREFIX;
for (String key : config.keySet()) {
if (key.startsWith(prefix) && key.length() > prefix.length()) {
// remove prefix
String envVarKey = key.substring(prefix.length());
envVars.put(envVarKey, config.getString(key, null));
}
}
return new ContaineredTaskManagerParameters(
containerMemorySizeMB,
heapMemorySizeMB,
directMemorySizeMB,
numSlots,
envVars,
youngMemorySizeMB,
containerCpuCore);
}
}
