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https://issues.apache.org/jira/browse/FLINK-26694?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]
Leonard Xu updated FLINK-26694:
-------------------------------
Fix Version/s: 1.19.0
> LookupFunction doesn't support multilevel inheritance
> -----------------------------------------------------
>
> Key: FLINK-26694
> URL: https://issues.apache.org/jira/browse/FLINK-26694
> Project: Flink
> Issue Type: Bug
> Components: Table SQL / API
> Affects Versions: 1.14.4
> Reporter: tsianglei
> Assignee: Xianxun Ye
> Priority: Minor
> Labels: auto-deprioritized-major, pull-request-available
> Fix For: 1.19.0
>
> Attachments: image-2022-03-17-11-19-21-269.png
>
>
> When we implement lookup function with multilevel inheritance，then there has
> an error。
> {code:java}
> org.apache.flink.table.api.ValidationException: Could not determine a type
> inference for lookup function 'default_catalog.default_database.dimTable'.
> Lookup functions support regular type inference. However, for convenience,
> the output class can simply be a Row or RowData class in which case the input
> and output types are derived from the table's schema with default conversion.
> at
> org.apache.flink.table.planner.codegen.LookupJoinCodeGenerator$.createLookupTypeInference(LookupJoinCodeGenerator.scala:270)
> at
> org.apache.flink.table.planner.codegen.LookupJoinCodeGenerator$.generateLookupFunction(LookupJoinCodeGenerator.scala:166)
> at
> org.apache.flink.table.planner.codegen.LookupJoinCodeGenerator$.generateAsyncLookupFunction(LookupJoinCodeGenerator.scala:118)
> at
> org.apache.flink.table.planner.codegen.LookupJoinCodeGenerator.generateAsyncLookupFunction(LookupJoinCodeGenerator.scala)
> at
> org.apache.flink.table.planner.plan.nodes.exec.common.CommonExecLookupJoin.createAsyncLookupJoin(CommonExecLookupJoin.java:332)
> at
> org.apache.flink.table.planner.plan.nodes.exec.common.CommonExecLookupJoin.translateToPlanInternal(CommonExecLookupJoin.java:238)
> at
> org.apache.flink.table.planner.plan.nodes.exec.ExecNodeBase.translateToPlan(ExecNodeBase.java:134)
> at
> org.apache.flink.table.planner.plan.nodes.exec.ExecEdge.translateToPlan(ExecEdge.java:250)
> at
> org.apache.flink.table.planner.plan.nodes.exec.common.CommonExecCalc.translateToPlanInternal(CommonExecCalc.java:88)
> at
> org.apache.flink.table.planner.plan.nodes.exec.ExecNodeBase.translateToPlan(ExecNodeBase.java:134)
> at
> org.apache.flink.table.planner.plan.nodes.exec.ExecEdge.translateToPlan(ExecEdge.java:250)
> at
> org.apache.flink.table.planner.plan.nodes.exec.stream.StreamExecSink.translateToPlanInternal(StreamExecSink.java:114)
> at
> org.apache.flink.table.planner.plan.nodes.exec.ExecNodeBase.translateToPlan(ExecNodeBase.java:134)
> at
> org.apache.flink.table.planner.delegation.StreamPlanner$$anonfun$1.apply(StreamPlanner.scala:71)
> at
> org.apache.flink.table.planner.delegation.StreamPlanner$$anonfun$1.apply(StreamPlanner.scala:70)
> at
> scala.collection.TraversableLike$$anonfun$map$1.apply(TraversableLike.scala:234)
> at
> scala.collection.TraversableLike$$anonfun$map$1.apply(TraversableLike.scala:234)
> at scala.collection.Iterator$class.foreach(Iterator.scala:891)
> at scala.collection.AbstractIterator.foreach(Iterator.scala:1334)
> at scala.collection.IterableLike$class.foreach(IterableLike.scala:72)
> at scala.collection.AbstractIterable.foreach(Iterable.scala:54)
> at scala.collection.TraversableLike$class.map(TraversableLike.scala:234)
> at scala.collection.AbstractTraversable.map(Traversable.scala:104)
> at
> org.apache.flink.table.planner.delegation.StreamPlanner.translateToPlan(StreamPlanner.scala:70)
> at
> org.apache.flink.table.planner.delegation.StreamPlanner.explain(StreamPlanner.scala:107)
> at
> org.apache.flink.table.planner.delegation.StreamPlanner.explain(StreamPlanner.scala:47)
> at
> org.apache.flink.table.api.internal.TableEnvironmentImpl.explainInternal(TableEnvironmentImpl.java:705)
> at
> org.apache.flink.table.api.internal.StatementSetImpl.explain(StatementSetImpl.java:118)
> XXXXXXX
> at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
> at
> sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
> at
> sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
> at java.lang.reflect.Method.invoke(Method.java:498)
> at
> org.junit.runners.model.FrameworkMethod$1.runReflectiveCall(FrameworkMethod.java:50)
> at
> org.junit.internal.runners.model.ReflectiveCallable.run(ReflectiveCallable.java:12)
> at
> org.junit.runners.model.FrameworkMethod.invokeExplosively(FrameworkMethod.java:47)
> at
> org.junit.internal.runners.statements.InvokeMethod.evaluate(InvokeMethod.java:17)
> at org.junit.runners.ParentRunner.runLeaf(ParentRunner.java:325)
> at
> org.junit.runners.BlockJUnit4ClassRunner.runChild(BlockJUnit4ClassRunner.java:78)
> at
> org.junit.runners.BlockJUnit4ClassRunner.runChild(BlockJUnit4ClassRunner.java:57)
> at org.junit.runners.ParentRunner$3.run(ParentRunner.java:290)
> at org.junit.runners.ParentRunner$1.schedule(ParentRunner.java:71)
> at org.junit.runners.ParentRunner.runChildren(ParentRunner.java:288)
> at org.junit.runners.ParentRunner.access$000(ParentRunner.java:58)
> at org.junit.runners.ParentRunner$2.evaluate(ParentRunner.java:268)
> at org.junit.runners.ParentRunner.run(ParentRunner.java:363)
> at org.junit.runner.JUnitCore.run(JUnitCore.java:137)
> at
> com.intellij.junit4.JUnit4IdeaTestRunner.startRunnerWithArgs(JUnit4IdeaTestRunner.java:69)
> at
> com.intellij.rt.junit.IdeaTestRunner$Repeater.startRunnerWithArgs(IdeaTestRunner.java:33)
> at
> com.intellij.rt.junit.JUnitStarter.prepareStreamsAndStart(JUnitStarter.java:235)
> at com.intellij.rt.junit.JUnitStarter.main(JUnitStarter.java:54)
> Caused by: org.apache.flink.table.api.ValidationException: Could not extract
> a valid type inference for function class
> 'XXXXXDynamicAsyncLookupFunctionEx'. Please check for implementation mistakes
> and/or provide a corresponding hint.
> at
> org.apache.flink.table.types.extraction.ExtractionUtils.extractionError(ExtractionUtils.java:362)
> at
> org.apache.flink.table.types.extraction.TypeInferenceExtractor.extractTypeInference(TypeInferenceExtractor.java:150)
> at
> org.apache.flink.table.types.extraction.TypeInferenceExtractor.forAsyncTableFunction(TypeInferenceExtractor.java:143)
> at
> org.apache.flink.table.functions.AsyncTableFunction.getTypeInference(AsyncTableFunction.java:116)
> at
> org.apache.flink.table.planner.codegen.LookupJoinCodeGenerator$.createLookupTypeInference(LookupJoinCodeGenerator.scala:251)
> ... 52 more
> Caused by: org.apache.flink.table.api.ValidationException: Error in
> extracting a signature to output mapping.
> at
> org.apache.flink.table.types.extraction.ExtractionUtils.extractionError(ExtractionUtils.java:362)
> at
> org.apache.flink.table.types.extraction.FunctionMappingExtractor.extractOutputMapping(FunctionMappingExtractor.java:117)
> at
> org.apache.flink.table.types.extraction.TypeInferenceExtractor.extractTypeInferenceOrError(TypeInferenceExtractor.java:161)
> at
> org.apache.flink.table.types.extraction.TypeInferenceExtractor.extractTypeInference(TypeInferenceExtractor.java:148)
> ... 55 more
> Caused by: org.apache.flink.table.api.ValidationException: Unable to extract
> a type inference from method:
> public void
> XXXXXXXXXDynamicAsyncLookupFunction.eval(java.util.concurrent.CompletableFuture,java.lang.Object)
> at
> org.apache.flink.table.types.extraction.ExtractionUtils.extractionError(ExtractionUtils.java:362)
> at
> org.apache.flink.table.types.extraction.FunctionMappingExtractor.extractResultMappings(FunctionMappingExtractor.java:183)
> at
> org.apache.flink.table.types.extraction.FunctionMappingExtractor.extractOutputMapping(FunctionMappingExtractor.java:114)
> ... 57 more
> Caused by: org.apache.flink.table.api.ValidationException: Could not extract
> a data type from 'interface org.apache.flink.table.data.RowData' in generic
> class 'org.apache.flink.table.functions.AsyncTableFunction' in class
> XXXXDynamicAsyncLookupFunctionEx. Please pass the required data type manually
> or allow RAW types.
> at
> org.apache.flink.table.types.extraction.ExtractionUtils.extractionError(ExtractionUtils.java:362)
> at
> org.apache.flink.table.types.extraction.DataTypeExtractor.extractDataTypeOrRawWithTemplate(DataTypeExtractor.java:241)
> at
> org.apache.flink.table.types.extraction.DataTypeExtractor.extractDataTypeOrRaw(DataTypeExtractor.java:219)
> at
> org.apache.flink.table.types.extraction.DataTypeExtractor.extractDataTypeWithClassContext(DataTypeExtractor.java:195)
> at
> org.apache.flink.table.types.extraction.DataTypeExtractor.extractFromGeneric(DataTypeExtractor.java:125)
> at
> org.apache.flink.table.types.extraction.FunctionMappingExtractor.lambda$createGenericResultExtraction$13(FunctionMappingExtractor.java:478)
> at
> org.apache.flink.table.types.extraction.FunctionMappingExtractor.putExtractedResultMappings(FunctionMappingExtractor.java:319)
> at
> org.apache.flink.table.types.extraction.FunctionMappingExtractor.collectMethodMappings(FunctionMappingExtractor.java:269)
> at
> org.apache.flink.table.types.extraction.FunctionMappingExtractor.extractResultMappings(FunctionMappingExtractor.java:169)
> ... 58 more
> Caused by: org.apache.flink.table.api.ValidationException: Cannot extract a
> data type from an internal 'org.apache.flink.table.data.RowData' class
> without further information. Please use annotations to define the full
> logical type.
> at
> org.apache.flink.table.types.extraction.ExtractionUtils.extractionError(ExtractionUtils.java:362)
> at
> org.apache.flink.table.types.extraction.ExtractionUtils.extractionError(ExtractionUtils.java:357)
> at
> org.apache.flink.table.types.extraction.DataTypeExtractor.checkForCommonErrors(DataTypeExtractor.java:368)
> at
> org.apache.flink.table.types.extraction.DataTypeExtractor.extractDataTypeOrError(DataTypeExtractor.java:273)
> at
> org.apache.flink.table.types.extraction.DataTypeExtractor.extractDataTypeOrRawWithTemplate(DataTypeExtractor.java:233)
> ... 65 more
> {code}
> We should change
> org.apache.flink.table.types.extraction.ExtractionUtils#extractSimpleGeneric
> clazz.getSuperclass() != baseClass --> !baseClass.isAssignableFrom(clazz)
>
> Our code run like this:
> !image-2022-03-17-11-19-21-269.png!
> thus, clazz.getSuperclass().getSuperclass() == baseClass .
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