[
https://issues.apache.org/jira/browse/FLINK-30981?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]
Dian Fu closed FLINK-30981.
---------------------------
Fix Version/s: (was: 1.18.0)
Assignee: Juntao Hu
Resolution: Fixed
Fixed in:
- master via a92892fea747f81f0e8a6cd4ec4ee207c95fa625
- release-1.17 via c33ee8decd7733436bec3ed102c6422e9083c558
> explain_sql throws java method not exist
> ----------------------------------------
>
> Key: FLINK-30981
> URL: https://issues.apache.org/jira/browse/FLINK-30981
> Project: Flink
> Issue Type: Bug
> Components: API / Python
> Affects Versions: 1.17.0
> Reporter: Juntao Hu
> Assignee: Juntao Hu
> Priority: Major
> Labels: pull-request-available
> Fix For: 1.17.0
>
>
> Execute `t_env.explainSql("ANY VALID SQL")` will throw error:
> {code:java}
> Traceback (most recent call last):
> File "ISSUE/FLINK-25622.py", line 42, in <module>
> main()
> File "ISSUE/FLINK-25622.py", line 34, in main
> print(t_env.explain_sql(
> File
> "/Users/vancior/Documents/Github/flink-back/flink-python/pyflink/table/table_environment.py",
> line 799, in explain_sql
> return self._j_tenv.explainSql(stmt, j_extra_details)
> File
> "/Users/vancior/miniconda3/envs/flink-python/lib/python3.8/site-packages/py4j/java_gateway.py",
> line 1322, in __call__
> return_value = get_return_value(
> File
> "/Users/vancior/Documents/Github/flink-back/flink-python/pyflink/util/exceptions.py",
> line 146, in deco
> return f(*a, **kw)
> File
> "/Users/vancior/miniconda3/envs/flink-python/lib/python3.8/site-packages/py4j/protocol.py",
> line 330, in get_return_value
> raise Py4JError(
> py4j.protocol.Py4JError: An error occurred while calling o11.explainSql.
> Trace:
> org.apache.flink.api.python.shaded.py4j.Py4JException: Method
> explainSql([class java.lang.String, class
> [Lorg.apache.flink.table.api.ExplainDetail;]) does not exist
> at
> org.apache.flink.api.python.shaded.py4j.reflection.ReflectionEngine.getMethod(ReflectionEngine.java:321)
> at
> org.apache.flink.api.python.shaded.py4j.reflection.ReflectionEngine.getMethod(ReflectionEngine.java:329)
> at
> org.apache.flink.api.python.shaded.py4j.Gateway.invoke(Gateway.java:274)
> 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}
> [30668|https://issues.apache.org/jira/browse/FLINK-30668] changed
> TableEnvironment#explainSql to an interface default method, while both
> TableEnvironmentInternal and TableEnvironmentImpl not overwriting it, it
> triggers a bug in py4j, see [https://github.com/py4j/py4j/issues/506] .
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