我正在尝试运行一个用Scala编写的大型开源项目。我正在使用 3 个码头工人映像运行它。
docker-compose 文件在这里。
version: '2'
services:
streammachine:
environment:
- "EXECUTION_TYPE=flink-cluster"
- "FLINK_JOBMGR_HOST=jobmanager"
- "FLINK_JOBMGR_PORT=8081"
- "FLINK_MONITORING_HOST=jobmanager"
- "FLINK_MONITORING_PORT=8081"
- "JOB_MANAGER_RPC_ADDRESS=jobmanager"
- "TSP_JAVA_OPTS=-Xms2G -Xmx4G"
restart: on-failure
image: clovergrp/tsp:latest
ports:
- "8080:8080"
jobmanager:
image: flink:1.7.2-scala_2.12-alpine
expose:
- "6123"
ports:
- "8081:8081"
command: jobmanager
environment:
- JOB_MANAGER_RPC_ADDRESS=jobmanager
taskmanager:
image: flink:1.7.2-scala_2.12-alpine
expose:
- "6121"
- "6122"
depends_on:
- jobmanager
command: taskmanager
links:
- "jobmanager:jobmanager"
environment:
- JOB_MANAGER_RPC_ADDRESS=jobmanager
该项目本身使用 Scala2.12.7。它取自 Build.sbt
但是，当我使用项目的功能时，我遇到了错误Cannot instantiate user function。
org.apache.flink.streaming.runtime.tasks.StreamTaskException: Cannot instantiate user function.
at org.apache.flink.streaming.api.graph.StreamConfig.getStreamOperator(StreamConfig.java:239)
at org.apache.flink.streaming.runtime.tasks.OperatorChain.createChainedOperator(OperatorChain.java:369)
at org.apache.flink.streaming.runtime.tasks.OperatorChain.createOutputCollector(OperatorChain.java:296)
at org.apache.flink.streaming.runtime.tasks.OperatorChain.<init>(OperatorChain.java:133)
at org.apache.flink.streaming.runtime.tasks.StreamTask.invoke(StreamTask.java:267)
at org.apache.flink.runtime.taskmanager.Task.run(Task.java:704)
at java.lang.Thread.run(Thread.java:748)
Caused by: java.io.InvalidClassException: scala.Symbol; local class incompatible: stream classdesc serialVersionUID = 6865603221856321286, local class serialVersionUID = 2966401305346518859
at java.io.ObjectStreamClass.initNonProxy(ObjectStreamClass.java:699)
at java.io.ObjectInputStream.readNonProxyDesc(ObjectInputStream.java:1885)
at java.io.ObjectInputStream.readClassDesc(ObjectInputStream.java:1751)
at java.io.ObjectInputStream.readOrdinaryObject(ObjectInputStream.java:2042)
at java.io.ObjectInputStream.readObject0(ObjectInputStream.java:1573)
at java.io.ObjectInputStream.defaultReadFields(ObjectInputStream.java:2287)
at java.io.ObjectInputStream.readSerialData(ObjectInputStream.java:2211)
at java.io.ObjectInputStream.readOrdinaryObject(ObjectInputStream.java:2069)
at java.io.ObjectInputStream.readObject0(ObjectInputStream.java:1573)
at java.io.ObjectInputStream.defaultReadFields(ObjectInputStream.java:2287)
at java.io.ObjectInputStream.readSerialData(ObjectInputStream.java:2211)
at java.io.ObjectInputStream.readOrdinaryObject(ObjectInputStream.java:2069)
at java.io.ObjectInputStream.readObject0(ObjectInputStream.java:1573)
at java.io.ObjectInputStream.defaultReadFields(ObjectInputStream.java:2287)
at java.io.ObjectInputStream.readSerialData(ObjectInputStream.java:2211)
at java.io.ObjectInputStream.readOrdinaryObject(ObjectInputStream.java:2069)
at java.io.ObjectInputStream.readObject0(ObjectInputStream.java:1573)
at java.io.ObjectInputStream.readArray(ObjectInputStream.java:1975)
at java.io.ObjectInputStream.readObject0(ObjectInputStream.java:1567)
at java.io.ObjectInputStream.defaultReadFields(ObjectInputStream.java:2287)
at java.io.ObjectInputStream.readSerialData(ObjectInputStream.java:2211)
at java.io.ObjectInputStream.readOrdinaryObject(ObjectInputStream.java:2069)
at java.io.ObjectInputStream.readObject0(ObjectInputStream.java:1573)
at java.io.ObjectInputStream.defaultReadFields(ObjectInputStream.java:2287)
at java.io.ObjectInputStream.readSerialData(ObjectInputStream.java:2211)
at java.io.ObjectInputStream.readOrdinaryObject(ObjectInputStream.java:2069)
at java.io.ObjectInputStream.readObject0(ObjectInputStream.java:1573)
at java.io.ObjectInputStream.defaultReadFields(ObjectInputStream.java:2287)
at java.io.ObjectInputStream.readSerialData(ObjectInputStream.java:2211)
at java.io.ObjectInputStream.readOrdinaryObject(ObjectInputStream.java:2069)
at java.io.ObjectInputStream.readObject0(ObjectInputStream.java:1573)
at java.io.ObjectInputStream.readObject(ObjectInputStream.java:431)
at org.apache.flink.util.InstantiationUtil.deserializeObject(InstantiationUtil.java:566)
at org.apache.flink.util.InstantiationUtil.deserializeObject(InstantiationUtil.java:552)
at org.apache.flink.util.InstantiationUtil.deserializeObject(InstantiationUtil.java:540)
at org.apache.flink.util.InstantiationUtil.readObjectFromConfig(InstantiationUtil.java:501)
at org.apache.flink.streaming.api.graph.StreamConfig.getStreamOperator(StreamConfig.java:224)
docker-compose 中的 Сhange flink 版本，以及 build.sbt 中的 scala-version