Question

我试图在Flink的github master分支中构建所有内容之后运行下面的简单代码。我在下面得到一个例外，我想知道端口9065上运行了什么？以及如何解决此异常？

 val dataStream = senv.fromElements(1, 2, 3, 4)
 dataStream.countWindowAll(2).sum(0).print()
 senv.execute("My streaming program")

以下是例外

Caused by: org.apache.flink.runtime.client.JobSubmissionException: Failed to submit JobGraph.
  at org.apache.flink.client.program.rest.RestClusterClient.lambda$submitJob$18(RestClusterClient.java:306)
  at java.util.concurrent.CompletableFuture.uniExceptionally(CompletableFuture.java:870)
  at java.util.concurrent.CompletableFuture$UniExceptionally.tryFire(CompletableFuture.java:852)
  at java.util.concurrent.CompletableFuture.postComplete(CompletableFuture.java:474)
  at java.util.concurrent.CompletableFuture.completeExceptionally(CompletableFuture.java:1977)
  at org.apache.flink.runtime.rest.RestClient.lambda$submitRequest$222(RestClient.java:196)
  at org.apache.flink.shaded.netty4.io.netty.util.concurrent.DefaultPromise.notifyListener0(DefaultPromise.java:680)
  at org.apache.flink.shaded.netty4.io.netty.util.concurrent.DefaultPromise.notifyListeners0(DefaultPromise.java:603)
  at org.apache.flink.shaded.netty4.io.netty.util.concurrent.DefaultPromise.notifyListeners(DefaultPromise.java:563)
  at org.apache.flink.shaded.netty4.io.netty.util.concurrent.DefaultPromise.tryFailure(DefaultPromise.java:424)
  at org.apache.flink.shaded.netty4.io.netty.channel.nio.AbstractNioChannel$AbstractNioUnsafe.fulfillConnectPromise(AbstractNioChannel.java:268)
  at org.apache.flink.shaded.netty4.io.netty.channel.nio.AbstractNioChannel$AbstractNioUnsafe.finishConnect(AbstractNioChannel.java:284)
  at org.apache.flink.shaded.netty4.io.netty.channel.nio.NioEventLoop.processSelectedKey(NioEventLoop.java:528)
  at org.apache.flink.shaded.netty4.io.netty.channel.nio.NioEventLoop.processSelectedKeysOptimized(NioEventLoop.java:468)
  at org.apache.flink.shaded.netty4.io.netty.channel.nio.NioEventLoop.processSelectedKeys(NioEventLoop.java:382)
  at org.apache.flink.shaded.netty4.io.netty.channel.nio.NioEventLoop.run(NioEventLoop.java:354)
  at org.apache.flink.shaded.netty4.io.netty.util.concurrent.SingleThreadEventExecutor$2.run(SingleThreadEventExecutor.java:111)
  at org.apache.flink.shaded.netty4.io.netty.util.concurrent.DefaultThreadFactory$DefaultRunnableDecorator.run(DefaultThreadFactory.java:137)
  at java.lang.Thread.run(Thread.java:745)
Caused by: java.util.concurrent.CompletionException: java.net.ConnectException: Connection refused: localhost/127.0.0.1:9065
  at java.util.concurrent.CompletableFuture.encodeThrowable(CompletableFuture.java:292)
  at java.util.concurrent.CompletableFuture.completeThrowable(CompletableFuture.java:308)
  at java.util.concurrent.CompletableFuture.uniCompose(CompletableFuture.java:943)
  at java.util.concurrent.CompletableFuture$UniCompose.tryFire(CompletableFuture.java:926)
  ... 16 more
Caused by: java.net.ConnectException: Connection refused: localhost/127.0.0.1:9065
  at sun.nio.ch.SocketChannelImpl.checkConnect(Native Method)
  at sun.nio.ch.SocketChannelImpl.finishConnect(SocketChannelImpl.java:717)
  at org.apache.flink.shaded.netty4.io.netty.channel.socket.nio.NioSocketChannel.doFinishConnect(NioSocketChannel.java:224)
  at org.apache.flink.shaded.netty4.io.netty.channel.nio.AbstractNioChannel$AbstractNioUnsafe.finishConnect(AbstractNioChannel.java:281)

我通过以下方式从源代码构建它（只是按照Flink github页面上的说明）：

git clone https://github.com/apache/flink.git
cd flink
mvn clean package -DskipTests 
cd build-target
./bin/start-scala-shell.sh local

Answer 1

我也有同样的例外。我的问题是在计算机上使用docker映像启动群集时发生端口冲突。因此，我已将flink配置文件中的其余端口更改为使用8084而不是8081。完成此操作后，群集将正确启动，但无法提交作业。当我终止了发生冲突的进程并将端口恢复为8081时，我可以成功提交作业

Answer 2

我遇到了同样的错误。 flink 1.7.2 使用 jdk 1.8

无法提交JobGraph Apache Flink

2 个答案: