shizhengchao created FLINK-26527:
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Summary: ClassCastException in TemporaryClassLoaderContext
Key: FLINK-26527
URL: https://issues.apache.org/jira/browse/FLINK-26527
Project: Flink
Issue Type: Bug
Components: Client / Job Submission
Affects Versions: 1.14.3, 1.13.5
Reporter: shizhengchao
When I try to run sql using flink's classloader, I get the following exception：
{code:java}
Exception in thread "main" java.lang.ClassCastException:
org.codehaus.janino.CompilerFactory cannot be cast to
org.codehaus.commons.compiler.ICompilerFactory
at
org.codehaus.commons.compiler.CompilerFactoryFactory.getCompilerFactory(CompilerFactoryFactory.java:129)
……{code}
my code is like this：
{code:java}
Configuration configuration = new Configuration();
configuration.set(CoreOptions.CLASSLOADER_RESOLVE_ORDER, "child-first");
List<URL> dependencies =
FlinkClassLoader.getFlinkDependencies(System.getenv(ConfigConstants.ENV_FLINK_HOME_DIR));
URLClassLoader classLoader = ClientUtils.buildUserCodeClassLoader(
dependencies,
Collections.emptyList(),
SessionContext.class.getClassLoader(),
configuration);
try (TemporaryClassLoaderContext ignored =
TemporaryClassLoaderContext.of(classLoader)) { tableEnv.explainSql(sql);
//CompilerFactoryFactory.getCompilerFactory("org.codehaus.janino.CompilerFactory");
} {code}
But, if you change `classloader.resolve-order` to `parent-first`, everything
works fine
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