Flink无法将指标发送给Graphite

Question

我有两个Apache Flink集群：生产中的1.1.3和分段中的1.3.2。

我有兴趣将指标发送到Graphite服务器，因此我按照https://ci.apache.org/projects/flink/flink-docs-release-1.3/monitoring/metrics.html中的说明进行设置。

我得到它在我的1.1.3群集，但不是在1.3.2。我加入弗林克lib目录下的jar文件：

在1.1.3：

• http://central.maven.org/maven2/io/dropwizard/metrics/metrics-graphite/3.1.0/metrics-graphite-3.1.0.jar
• http://central.maven.org/maven2/org/apache/flink/flink-metrics-dropwizard/1.1.1-hadoop1/flink-metrics-dropwizard-1.1.1-hadoop1.jar
• http://central.maven.org/maven2/org/apache/flink/flink-metrics-graphite/1.1.4/flink-metrics-graphite-1.1.4.jar
• http://central.maven.org/maven2/org/apache/flink/flink-metrics-jmx/1.1.4/flink-metrics-jmx-1.1.4.jar

在1.3.2 ：

• http://central.maven.org/maven2/io/dropwizard/metrics/metrics-graphite/3.1.0/metrics-graphite-3.1.0.jar
• http://central.maven.org/maven2/org/apache/flink/flink-metrics-dropwizard/1.1.1-hadoop1/flink-metrics-dropwizard-1.1.1-hadoop1.jar
• http://central.maven.org/maven2/org/apache/flink/flink-metrics-graphite/1.3.2/flink-metrics-graphite-1.3.2.jar
• http://central.maven.org/maven2/org/apache/flink/flink-metrics-jmx/1.3.2/flink-metrics-jmx-1.3.2.jar

我添加的设置是两个相同的（除了它们发送到不同的石墨服务器）：

metrics.reporters: grph 
metrics.reporter.grph.class: org.apache.flink.metrics.graphite.GraphiteReporter 
metrics.reporter.grph.host: 10.x.x.x 
metrics.reporter.grph.port: 2003 
metrics.reporter.grph.prefix: flink 
metrics.reporter.grph.protocol: TCP 

我在分段集群中看到的错误消息（1 .3.2）是：

2017-08-07 13:13:15.892 main ERROR org.apache.flink.runtime.metrics.MetricRegistry Could not instantiate metrics reporter grph. Metrics might not be exposed/reported. 
java.lang.NoClassDefFoundError: com/codahale/metrics/Reporter 
    at java.lang.ClassLoader.defineClass1(Native Method) 
    at java.lang.ClassLoader.defineClass(ClassLoader.java:763) 
    at java.security.SecureClassLoader.defineClass(SecureClassLoader.java:142) 
    at java.net.URLClassLoader.defineClass(URLClassLoader.java:467) 
    at java.net.URLClassLoader.access$100(URLClassLoader.java:73) 
    at java.net.URLClassLoader$1.run(URLClassLoader.java:368) 
    at java.net.URLClassLoader$1.run(URLClassLoader.java:362) 
    at java.security.AccessController.doPrivileged(Native Method) 
    at java.net.URLClassLoader.findClass(URLClassLoader.java:361) 
    at java.lang.ClassLoader.loadClass(ClassLoader.java:424) 
    at sun.misc.Launcher$AppClassLoader.loadClass(Launcher.java:335) 
    at java.lang.ClassLoader.loadClass(ClassLoader.java:357) 
    at java.lang.ClassLoader.defineClass1(Native Method) 
    at java.lang.ClassLoader.defineClass(ClassLoader.java:763) 
    at java.security.SecureClassLoader.defineClass(SecureClassLoader.java:142) 
    at java.net.URLClassLoader.defineClass(URLClassLoader.java:467) 
    at java.net.URLClassLoader.access$100(URLClassLoader.java:73) 
    at java.net.URLClassLoader$1.run(URLClassLoader.java:368) 
    at java.net.URLClassLoader$1.run(URLClassLoader.java:362) 
    at java.security.AccessController.doPrivileged(Native Method) 
    at java.net.URLClassLoader.findClass(URLClassLoader.java:361) 
    at java.lang.ClassLoader.loadClass(ClassLoader.java:424) 
    at sun.misc.Launcher$AppClassLoader.loadClass(Launcher.java:335) 
    at java.lang.ClassLoader.loadClass(ClassLoader.java:357) 
    at java.lang.Class.forName0(Native Method) 
    at java.lang.Class.forName(Class.java:264) 
    at org.apache.flink.runtime.metrics.MetricRegistry.<init>(MetricRegistry.java:123) 
    at org.apache.flink.runtime.taskexecutor.TaskManagerServices.fromConfiguration(TaskManagerServices.java:188) 
    at org.apache.flink.runtime.taskmanager.TaskManager$.startTaskManagerComponentsAndActor(TaskManager.scala:1921) 
    at org.apache.flink.runtime.taskmanager.TaskManager$.runTaskManager(TaskManager.scala:1819) 
    at org.apache.flink.runtime.taskmanager.TaskManager$.selectNetworkInterfaceAndRunTaskManager(TaskManager.scala:1673) 
    at org.apache.flink.runtime.taskmanager.TaskManager$$anon$2.call(TaskManager.scala:1574) 
    at org.apache.flink.runtime.taskmanager.TaskManager$$anon$2.call(TaskManager.scala:1572) 
    at org.apache.flink.runtime.security.HadoopSecurityContext$1.run(HadoopSecurityContext.java:43) 
    at java.security.AccessController.doPrivileged(Native Method) 
    at javax.security.auth.Subject.doAs(Subject.java:422) 
    at org.apache.hadoop.security.UserGroupInformation.doAs(UserGroupInformation.java:1657) 
    at org.apache.flink.runtime.security.HadoopSecurityContext.runSecured(HadoopSecurityContext.java:40) 
    at org.apache.flink.runtime.taskmanager.TaskManager$.main(TaskManager.scala:1572) 
    at org.apache.flink.runtime.taskmanager.TaskManager.main(TaskManager.scala) 
Caused by: java.lang.ClassNotFoundException: com.codahale.metrics.Reporter 
    at java.net.URLClassLoader.findClass(URLClassLoader.java:381) 
    at java.lang.ClassLoader.loadClass(ClassLoader.java:424) 
    at sun.misc.Launcher$AppClassLoader.loadClass(Launcher.java:335) 
    at java.lang.ClassLoader.loadClass(ClassLoader.java:357) 
    ... 40 common frames omitted 

任何帮助将不胜感激！

Answer 1

您必须将io.dropwizard.metrics：metrics-core 3.1.0添加到/ lib文件夹。原因是在1.1版本中，Flink运行时本身使用了metrics-core，这在1.3中已不再是这种情况。

另外，你也可以使用flink-metrics-graphite jar -with-dependencies，它应该包含你需要的所有东西。