wangzhen-wudangshan opened a new issue, #1785: URL: https://github.com/apache/incubator-streampark/issues/1785
### Search before asking - [X] I had searched in the [issues](https://github.com/apache/streampark/issues?q=is%3Aissue+label%3A%22bug%22) and found no similar issues. ### What happened I have a custom udf package, which was uploaded through streampark, but it was prompted that the function could not be found. ### StreamPark Version 1.2.4 ### Java Version 1.8 ### Flink Version 1.13.5 ### Scala Version of Flink 2.12 ### Error Exception ```log at org.apache.flink.table.catalog.FunctionCatalog.resolvePreciseFunctionReference(FunctionCatalog.java:582) at org.apache.flink.table.catalog.FunctionCatalog.lambda$resolveAmbiguousFunctionReference$3(FunctionCatalog.java:624) at java.util.Optional.orElseGet(Optional.java:267) at org.apache.flink.table.catalog.FunctionCatalog.resolveAmbiguousFunctionReference(FunctionCatalog.java:624) at org.apache.flink.table.catalog.FunctionCatalog.lookupFunction(FunctionCatalog.java:362) at org.apache.flink.table.planner.catalog.FunctionCatalogOperatorTable.lookupOperatorOverloads(FunctionCatalogOperatorTable.java:97) at org.apache.calcite.sql.util.ChainedSqlOperatorTable.lookupOperatorOverloads(ChainedSqlOperatorTable.java:67) at org.apache.calcite.sql.validate.SqlValidatorImpl.performUnconditionalRewrites(SqlValidatorImpl.java:1182) at org.apache.calcite.sql.validate.SqlValidatorImpl.performUnconditionalRewrites(SqlValidatorImpl.java:1168) at org.apache.calcite.sql.validate.SqlValidatorImpl.performUnconditionalRewrites(SqlValidatorImpl.java:1168) at org.apache.calcite.sql.validate.SqlValidatorImpl.performUnconditionalRewrites(SqlValidatorImpl.java:1168) at org.apache.calcite.sql.validate.SqlValidatorImpl.performUnconditionalRewrites(SqlValidatorImpl.java:1168) at org.apache.calcite.sql.validate.SqlValidatorImpl.performUnconditionalRewrites(SqlValidatorImpl.java:1168) at org.apache.calcite.sql.validate.SqlValidatorImpl.validateScopedExpression(SqlValidatorImpl.java:944) at org.apache.calcite.sql.validate.SqlValidatorImpl.validate(SqlValidatorImpl.java:703) at org.apache.flink.table.planner.calcite.FlinkPlannerImpl.org$apache$flink$table$planner$calcite$FlinkPlannerImpl$$validate(FlinkPlannerImpl.scala:151) ... 56 more Caused by: java.lang.ClassNotFoundException: function.MongDBColumnToRowFunction at java.net.URLClassLoader.findClass(URLClassLoader.java:382) at java.lang.ClassLoader.loadClass(ClassLoader.java:424) at org.apache.flink.util.FlinkUserCodeClassLoader.loadClassWithoutExceptionHandling(FlinkUserCodeClassLoader.java:64) at org.apache.flink.util.ChildFirstClassLoader.loadClassWithoutExceptionHandling(ChildFirstClassLoader.java:74) at org.apache.flink.util.FlinkUserCodeClassLoader.loadClass(FlinkUserCodeClassLoader.java:48) at java.lang.ClassLoader.loadClass(ClassLoader.java:357) at org.apache.flink.runtime.execution.librarycache.FlinkUserCodeClassLoaders$SafetyNetWrapperClassLoader.loadClass(FlinkUserCodeClassLoaders.java:172) at org.apache.flink.table.functions.UserDefinedFunctionHelper.instantiateFunction(UserDefinedFunctionHelper.java:211) ... 73 more ``` ### Screenshots  ### Are you willing to submit PR? - [ ] Yes I am willing to submit a PR! ### Code of Conduct - [X] I agree to follow this project's [Code of Conduct](https://www.apache.org/foundation/policies/conduct) -- This is an automated message from the Apache Git Service. To respond to the message, please log on to GitHub and use the URL above to go to the specific comment. To unsubscribe, e-mail: [email protected] For queries about this service, please contact Infrastructure at: [email protected]
