无法在 Google Cloud Dataproc 上启动 Apache Flink 1.7

Question

我使用 Hadoop 2.9.2 启动了一个 Dataproc 集群，下载了 Flink 1.7.2 并尝试使用以下命令启动它：

./bin/yarn-session.sh  -n 2

此操作失败并显示以下错误消息：

Setting HADOOP_CONF_DIR=/etc/hadoop/conf because no HADOOP_CONF_DIR was set.
2019-02-15 12:56:05,679 INFO  org.apache.flink.configuration.GlobalConfiguration            - Loading configuration property: jobmanager.rpc.address, localhost
2019-02-15 12:56:05,680 INFO  org.apache.flink.configuration.GlobalConfiguration            - Loading configuration property: jobmanager.rpc.port, 6123
2019-02-15 12:56:05,681 INFO  org.apache.flink.configuration.GlobalConfiguration            - Loading configuration property: jobmanager.heap.size, 1024m
2019-02-15 12:56:05,681 INFO  org.apache.flink.configuration.GlobalConfiguration            - Loading configuration property: taskmanager.heap.size, 1024m
2019-02-15 12:56:05,681 INFO  org.apache.flink.configuration.GlobalConfiguration            - Loading configuration property: taskmanager.numberOfTaskSlots, 1
2019-02-15 12:56:05,681 INFO  org.apache.flink.configuration.GlobalConfiguration            - Loading configuration property: parallelism.default, 1
2019-02-15 12:56:05,682 INFO  org.apache.flink.configuration.GlobalConfiguration            - Loading configuration property: rest.port, 8081
2019-02-15 12:56:06,241 WARN  org.apache.hadoop.util.NativeCodeLoader                       - Unable to load native-hadoop library for your platform... using builtin-java classes where applicable
2019-02-15 12:56:06,323 INFO  org.apache.flink.runtime.security.modules.HadoopModule        - Hadoop user set to robert (auth:SIMPLE)
2019-02-15 12:56:06,534 ERROR org.apache.flink.yarn.cli.FlinkYarnSessionCli                 - Error while running the Flink Yarn session.
java.lang.NoClassDefFoundError: javax/ws/rs/ext/MessageBodyReader
    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:468)
    at java.net.URLClassLoader.access$100(URLClassLoader.java:74)
    at java.net.URLClassLoader$1.run(URLClassLoader.java:369)
    at java.net.URLClassLoader$1.run(URLClassLoader.java:363)
    at java.security.AccessController.doPrivileged(Native Method)
    at java.net.URLClassLoader.findClass(URLClassLoader.java:362)
    at java.lang.ClassLoader.loadClass(ClassLoader.java:424)
    at sun.misc.Launcher$AppClassLoader.loadClass(Launcher.java:349)
    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:468)
    at java.net.URLClassLoader.access$100(URLClassLoader.java:74)
    at java.net.URLClassLoader$1.run(URLClassLoader.java:369)
    at java.net.URLClassLoader$1.run(URLClassLoader.java:363)
    at java.security.AccessController.doPrivileged(Native Method)
    at java.net.URLClassLoader.findClass(URLClassLoader.java:362)
    at java.lang.ClassLoader.loadClass(ClassLoader.java:424)
    at sun.misc.Launcher$AppClassLoader.loadClass(Launcher.java:349)
    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:468)
    at java.net.URLClassLoader.access$100(URLClassLoader.java:74)
    at java.net.URLClassLoader$1.run(URLClassLoader.java:369)
    at java.net.URLClassLoader$1.run(URLClassLoader.java:363)
    at java.security.AccessController.doPrivileged(Native Method)
    at java.net.URLClassLoader.findClass(URLClassLoader.java:362)
    at java.lang.ClassLoader.loadClass(ClassLoader.java:424)
    at sun.misc.Launcher$AppClassLoader.loadClass(Launcher.java:349)
    at java.lang.ClassLoader.loadClass(ClassLoader.java:357)
    at org.apache.hadoop.yarn.util.timeline.TimelineUtils.<clinit>(TimelineUtils.java:50)
    at org.apache.hadoop.yarn.client.api.impl.YarnClientImpl.serviceInit(YarnClientImpl.java:179)
    at org.apache.hadoop.service.AbstractService.init(AbstractService.java:163)
    at org.apache.flink.yarn.cli.FlinkYarnSessionCli.getClusterDescriptor(FlinkYarnSessionCli.java:984)
    at org.apache.flink.yarn.cli.FlinkYarnSessionCli.createDescriptor(FlinkYarnSessionCli.java:273)
    at org.apache.flink.yarn.cli.FlinkYarnSessionCli.createClusterDescriptor(FlinkYarnSessionCli.java:451)
    at org.apache.flink.yarn.cli.FlinkYarnSessionCli.run(FlinkYarnSessionCli.java:588)
    at org.apache.flink.yarn.cli.FlinkYarnSessionCli.lambda$main$2(FlinkYarnSessionCli.java:810)
    at java.security.AccessController.doPrivileged(Native Method)
    at javax.security.auth.Subject.doAs(Subject.java:422)
    at org.apache.hadoop.security.UserGroupInformation.doAs(UserGroupInformation.java:1836)
    at org.apache.flink.runtime.security.HadoopSecurityContext.runSecured(HadoopSecurityContext.java:41)
    at org.apache.flink.yarn.cli.FlinkYarnSessionCli.main(FlinkYarnSessionCli.java:810)
Caused by: java.lang.ClassNotFoundException: javax.ws.rs.ext.MessageBodyReader
    at java.net.URLClassLoader.findClass(URLClassLoader.java:382)
    at java.lang.ClassLoader.loadClass(ClassLoader.java:424)
    at sun.misc.Launcher$AppClassLoader.loadClass(Launcher.java:349)
    at java.lang.ClassLoader.loadClass(ClassLoader.java:357)
    ... 49 more

Answer 1

通常，安装 Flink 的最佳方法是使用 initialization action，它通过 Dataproc 发行版中的 apt-get 安装，以获取已针对给定 Dataproc 版本进行交叉编译和测试的 Flink 版本。在这种情况下，您无需修改​​任何环境变量即可使其正常工作。

如果您确实想将特定版本的 Flink 与未在发行版中提供该 Flink 版本的 Dataproc 版本一起使用，您可能需要像您所做的那样从 Flink 下载中进行安装。您还可以查看earlier versions of the initialization action 之一，当它从 tarball 安装 Flink 时，可以查看可能需要的各种配置。例如，基于之前的初始化操作，您可能还想导出 HADOOP_CONF_DIR=/etc/hadoop/conf。

Answer 2

为了解决这个问题，我需要导出以下变量：

export HADOOP_CLASSPATH=`hadoop classpath`