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https://issues.apache.org/jira/browse/FLINK-26666?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Flink Jira Bot updated FLINK-26666:
-----------------------------------
Labels: pull-request-available stale-assigned (was: pull-request-available)
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> Improve the error message of pyflink and flink version mismatch
> ---------------------------------------------------------------
>
> Key: FLINK-26666
> URL: https://issues.apache.org/jira/browse/FLINK-26666
> Project: Flink
> Issue Type: Sub-task
> Components: API / Python
> Affects Versions: 1.16.0
> Reporter: Huang Xingbo
> Assignee: bo zhao
> Priority: Major
> Labels: pull-request-available, stale-assigned
>
> When a user runs a pyflink job locally, the following error will be reported
> because FLINK_HOME is set and the version of flink binaray is inconsistent
> with the version of pyflink:
> {code:java}
> Traceback (most recent call last):
> File "word_count.py", line 117, in <module>
> word_count(known_args.input, known_args.output)
> File "word_count.py", line 49, in word_count
> env = StreamExecutionEnvironment.get_execution_environment()
> File
> "/home/knaufk/.virtualenvs/flink-1.14/lib/python3.8/site-packages/pyflink/datastream/stream_execution_environment.py",
> line 732, in get_execution_environment
> gateway = get_gateway()
> File
> "/home/knaufk/.virtualenvs/flink-1.14/lib/python3.8/site-packages/pyflink/java_gateway.py",
> line 67, in get_gateway
>
> _gateway.jvm.org.apache.flink.client.python.PythonEnvUtils.resetCallbackClient(
> File
> "/home/knaufk/.virtualenvs/flink-1.14/lib/python3.8/site-packages/py4j/java_gateway.py",
> line 1285, in __call__
> return_value = get_return_value(
> File
> "/home/knaufk/.virtualenvs/flink-1.14/lib/python3.8/site-packages/py4j/protocol.py",
> line 330, in get_return_value
> raise Py4JError(
> py4j.protocol.Py4JError: An error occurred while calling
> z:org.apache.flink.client.python.PythonEnvUtils.resetCallbackClient. Trace:
> org.apache.flink.api.python.shaded.py4j.Py4JException: Method
> resetCallbackClient([class
> org.apache.flink.api.python.shaded.py4j.GatewayServer, class
> java.lang.String, class java.lang.Integer]) does not exist
> at
> org.apache.flink.api.python.shaded.py4j.reflection.ReflectionEngine.getMethod(ReflectionEngine.java:318)
> at
> org.apache.flink.api.python.shaded.py4j.reflection.ReflectionEngine.getMethod(ReflectionEngine.java:339)
> at
> org.apache.flink.api.python.shaded.py4j.Gateway.invoke(Gateway.java:276)
> at
> org.apache.flink.api.python.shaded.py4j.commands.AbstractCommand.invokeMethod(AbstractCommand.java:132)
> at
> org.apache.flink.api.python.shaded.py4j.commands.CallCommand.execute(CallCommand.java:79)
> at
> org.apache.flink.api.python.shaded.py4j.GatewayConnection.run(GatewayConnection.java:238)
> at java.base/java.lang.Thread.run(Thread.java:829)
> {code}
> We can add some guiding suggestions in the error message:
> {code:java}
> you have two choices to solve this problem:
> 1. You can unset the FLINK_HOME environment variable.
> 2. Make sure that the flink version of FLINK_HOME is the same as the pyflink
> version
> {code}
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