有没有一种方法可以在ApacheFlink中将作业调度到特定的处理器

Question

我是Apache Flink的新用户，目前我的目标是在异构处理系统上测试调度算法。因此，我将每个作业部署到哪个处理器变得非常重要。但是，我找不到如何指定要将作业部署到的处理器ID，也找不到让处理器返回可用性的方法。我真诚地感谢你的帮助，如果你能给我一些提示，告诉我如何做到这一点。希望你过得愉快：(

Answer 1

我通过了一个类似的问题来调度和监视将子任务转移到机器的特定cpu核心。我使用LinuxJNAAffinity解决问题(https://github.com/OpenHFT/Java-Thread-Affinity)。也许你可以以我的解决方案为基础。这是我的一个UDF。

import java.util.BitSet;
import java.util.List;
import org.apache.flink.api.common.functions.RichMapFunction;
import org.apache.flink.api.java.tuple.Tuple3;
import org.apache.flink.configuration.Configuration;
import org.sense.flink.pojo.Point;
import org.sense.flink.pojo.ValenciaItem;
import org.sense.flink.util.CRSCoordinateTransformer;
import org.sense.flink.util.CpuGauge;
import org.sense.flink.util.SimpleGeographicalPolygons;
import net.openhft.affinity.impl.LinuxJNAAffinity;
public class ValenciaItemDistrictMap extends RichMapFunction<ValenciaItem, ValenciaItem> {
private static final long serialVersionUID = 624354384779615610L;
private SimpleGeographicalPolygons sgp;
private transient CpuGauge cpuGauge;
private BitSet affinity;
private boolean pinningPolicy;
public ValenciaItemDistrictMap() {
this(false);
}
public ValenciaItemDistrictMap(boolean pinningPolicy) {
this.pinningPolicy = pinningPolicy;
}
@Override
public void open(Configuration parameters) throws Exception {
super.open(parameters);
this.sgp = new SimpleGeographicalPolygons();
this.cpuGauge = new CpuGauge();
getRuntimeContext().getMetricGroup().gauge("cpu", cpuGauge);
if (this.pinningPolicy) {
// listing the cpu cores available
int nbits = Runtime.getRuntime().availableProcessors();
// pinning operator' thread to a specific cpu core
this.affinity = new BitSet(nbits);
affinity.set(((int) Thread.currentThread().getId() % nbits));
LinuxJNAAffinity.INSTANCE.setAffinity(affinity);
}
}
@Override
public ValenciaItem map(ValenciaItem value) throws Exception {
// updates the CPU core current in use
this.cpuGauge.updateValue(LinuxJNAAffinity.INSTANCE.getCpu());
System.err.println(ValenciaItemDistrictMap.class.getSimpleName() + " thread[" + Thread.currentThread().getId()
+ "] core[" + this.cpuGauge.getValue() + "]");
List<Point> coordinates = value.getCoordinates();
boolean flag = true;
int i = 0;
while (flag) {
Tuple3<Long, Long, String> adminLevel = sgp.getAdminLevel(coordinates.get(i));
if (adminLevel.f0 != null && adminLevel.f1 != null) {
value.setId(adminLevel.f0);
value.setAdminLevel(adminLevel.f1);
value.setDistrict(adminLevel.f2);
flag = false;
} else {
i++;
}
}
if (flag) {
// if we did not find a district with the given coordinate we assume the
// district 16
value.clearCoordinates();
value.addCoordinates(
new Point(724328.279007, 4374887.874634, CRSCoordinateTransformer.DEFAULT_CRS_EPSG_25830));
value.setId(16L);
value.setAdminLevel(9L);
value.setDistrict("Benicalap");
}
return value;
}
}