Question

我有一个容器化的flink群集，其中包含一个独立的JobManager和2个任务管理器。当我提交仅包含我需要的连接器和代码的胖jar时，一切运行良好，但是仅包含我的代码的jar将失败-即使我已将连接器jar添加到/ opt / flink / lib并且容器进程显示它们将被添加到类路径。当我尝试从IDE进行远程连接时，也会发生相同的故障；不用说，每次都必须捆绑一个胖子，这会带来惨痛的开发经验。

我需要做些什么以使flink理解我在/ opt / flink / lib中放置的其他jar应该与所有新作业一起使用？

类加载器异常：

org.apache.flink.streaming.runtime.tasks.StreamTaskException：无法加载用户类： org.apache.flink.streaming.connectors.kafka.FlinkKafkaConsumer

flink Dockerfile：

FROM flink:1.7.2

ADD http://central.maven.org/maven2/org/apache/flink/flink-connector-kafka_2.12/1.7.2/flink-connector-kafka_2.12-1.7.2.jar /opt/flink/lib/
ADD http://central.maven.org/maven2/org/apache/flink/flink-avro-confluent-registry/1.7.2/flink-avro-confluent-registry-1.7.2.jar /opt/flink/lib/
ADD http://central.maven.org/maven2/org/apache/flink/flink-connector-elasticsearch6_2.12/1.7.2/flink-connector-elasticsearch6_2.12-1.7.2.jar /opt/flink/lib/

工作管理器容器：

root@2406b722dae1:/tmp# ps ax | more
  PID TTY      STAT   TIME COMMAND
    1 ?        Ssl    1:01 /docker-java-home/jre/bin/java -Xms1024m -Xmx1024m -Dlog4j.configuration=file:/opt/flink/conf/log4j-console.properties -Dlogback.configurationFil
e=file:/opt/flink/conf/logback-console.xml -classpath /opt/flink/lib/flink-avro-confluent-registry-1.7.2.jar:/opt/flink/lib/flink-connector-elasticsearch6_2.12-1.7.2.jar:/o
pt/flink/lib/flink-connector-kafka_2.12-1.7.2.jar:/opt/flink/lib/flink-python_2.12-1.7.2.jar:/opt/flink/lib/log4j-1.2.17.jar:/opt/flink/lib/slf4j-log4j12-1.7.15.jar:/opt/fl
ink/lib/flink-dist_2.12-1.7.2.jar::: org.apache.flink.runtime.entrypoint.StandaloneSessionClusterEntrypoint --configDir /opt/flink/conf --executionMode cluster

任务管理器容器：

root@bd1aa6e35b5a:/tmp# ps ax | more
  PID TTY      STAT   TIME COMMAND
    1 ?        Ssl    0:28 /docker-java-home/jre/bin/java -XX:+UseG1GC -Xms922M -Xmx922M -XX:MaxDirectMemorySize=8388607T -Dlog4j.configuration=file:/opt/flink/conf/log4j-c
onsole.properties -Dlogback.configurationFile=file:/opt/flink/conf/logback-console.xml -classpath /opt/flink/lib/flink-avro-confluent-registry-1.7.2.jar:/opt/flink/lib/flin
k-connector-elasticsearch6_2.12-1.7.2.jar:/opt/flink/lib/flink-connector-kafka_2.12-1.7.2.jar:/opt/flink/lib/flink-python_2.12-1.7.2.jar:/opt/flink/lib/log4j-1.2.17.jar:/op
t/flink/lib/slf4j-log4j12-1.7.15.jar:/opt/flink/lib/flink-dist_2.12-1.7.2.jar::: org.apache.flink.runtime.taskexecutor.TaskManagerRunner --configDir /opt/flink/conf

正在运行的JobManager和TaskManager上的

/ opt / flink / lib：

root@bd1aa6e35b5a:/opt/flink/lib# ls -lh
total 84M
-rw------- 1 root  root  2.7M Feb 11 16:25 flink-avro-confluent-registry-1.7.2.jar
-rw------- 1 root  root   30K Feb 11 16:21 flink-connector-elasticsearch6_2.12-1.7.2.jar
-rw------- 1 root  root   67K Feb 11 16:24 flink-connector-kafka_2.12-1.7.2.jar
-rw-r--r-- 1 flink flink  81M Feb 11 14:50 flink-dist_2.12-1.7.2.jar
-rw-r--r-- 1 flink flink 139K Feb 11 14:49 flink-python_2.12-1.7.2.jar
-rw-rw-r-- 1 flink flink 479K Feb 11 14:32 log4j-1.2.17.jar
-rw-rw-r-- 1 flink flink 9.7K Feb 11 14:32 slf4j-log4j12-1.7.15.jar

以防万一-班级在预期的罐子里

root@bd1aa6e35b5a:/opt/flink/lib# unzip -l flink-connector-kafka_2.12-1.7.2.jar | grep FlinkKafkaConsumer
    14272  2019-02-12 00:24   org/apache/flink/streaming/connectors/kafka/FlinkKafkaConsumer.class

Answer 1

我知道了。我的第一个问题是flink在flink用户下运行，从清单中可以看出，我在Dockerfile中添加的文件由root拥有。之后我遇到的问题是sbt-assembly为您捆绑了所有传递性依赖项，您必须在Dockerfile中手动进行此操作（胖jar文件大小和我添加的文件之间的差异应该已经消除了）。

我修复了Dockerfile的所有权问题和Kafka连接器的传递依赖项（elasticsearch可能仍然缺少很多依赖项）：

FROM flink:1.7.2

ADD --chown=flink:flink http://central.maven.org/maven2/org/apache/flink/flink-connector-kafka_2.12/1.7.2/flink-connector-kafka_2.12-1.7.2.jar /opt/flink/lib/
ADD --chown=flink:flink http://central.maven.org/maven2/org/apache/flink/flink-connector-kafka-base_2.12/1.7.2/flink-connector-kafka-base_2.12-1.7.2.jar /opt/flink/lib/
ADD --chown=flink:flink http://central.maven.org/maven2/org/apache/flink/flink-avro/1.7.2/flink-avro-1.7.2.jar /opt/flink/lib/
ADD --chown=flink:flink http://central.maven.org/maven2/org/apache/flink/flink-json/1.7.2/flink-json-1.7.2.jar /opt/flink/lib/
ADD --chown=flink:flink http://central.maven.org/maven2/org/apache/avro/avro/1.8.2/avro-1.8.2.jar /opt/flink/lib/
ADD --chown=flink:flink http://central.maven.org/maven2/org/apache/kafka/kafka-clients/0.10.2.1/kafka-clients-0.10.2.1.jar /opt/flink/lib/
ADD --chown=flink:flink http://central.maven.org/maven2/net/jpountz/lz4/lz4/1.3.0/lz4-1.3.0.jar /opt/flink/lib/
ADD --chown=flink:flink http://central.maven.org/maven2/org/xerial/snappy/snappy-java/1.1.2.6/snappy-java-1.1.2.6.jar /opt/flink/lib/
ADD --chown=flink:flink http://central.maven.org/maven2/org/apache/flink/flink-avro-confluent-registry/1.7.2/flink-avro-confluent-registry-1.7.2.jar /opt/flink/lib/
ADD --chown=flink:flink http://central.maven.org/maven2/org/apache/flink/flink-connector-elasticsearch6_2.12/1.7.2/flink-connector-elasticsearch6_2.12-1.7.2.jar /opt/flink/lib/

在dockerized flink集群中，除胖子外的所有其他设备均失败

1 个答案: