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https://issues.apache.org/jira/browse/FLINK-18520?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17175204#comment-17175204
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Mulan commented on FLINK-18520:
-------------------------------
Has AsyncTableFunction fixed?
> New Table Function type inference fails
> ---------------------------------------
>
> Key: FLINK-18520
> URL: https://issues.apache.org/jira/browse/FLINK-18520
> Project: Flink
> Issue Type: Bug
> Components: Table SQL / API
> Affects Versions: 1.11.0
> Reporter: Benchao Li
> Assignee: Timo Walther
> Priority: Major
> Labels: pull-request-available
> Fix For: 1.12.0, 1.11.1
>
>
> For a simple UDTF like
> {code:java}
> public class Split extends TableFunction<String> {
> public Split(){}
> public void eval(String str, String ch) {
> if (str == null || str.isEmpty()) {
> return;
> } else {
> String[] ss = str.split(ch);
> for (String s : ss) {
> collect(s);
> }
> }
> }
> }
> {code}
> register it using new function type inference
> {{tableEnv.createFunction("my_split", Split.class);}} and using it in a
> simple query will fail with following exception:
> {code:java}
> Exception in thread "main" org.apache.flink.table.api.ValidationException:
> SQL validation failed. From line 1, column 93 to line 1, column 115: No match
> found for function signature my_split(<CHARACTER>, <CHARACTER>)
> at
> org.apache.flink.table.planner.calcite.FlinkPlannerImpl.org$apache$flink$table$planner$calcite$FlinkPlannerImpl$$validate(FlinkPlannerImpl.scala:146)
> at
> org.apache.flink.table.planner.calcite.FlinkPlannerImpl.validate(FlinkPlannerImpl.scala:108)
> at
> org.apache.flink.table.planner.operations.SqlToOperationConverter.convert(SqlToOperationConverter.java:187)
> at
> org.apache.flink.table.planner.operations.SqlToOperationConverter.convertSqlInsert(SqlToOperationConverter.java:527)
> at
> org.apache.flink.table.planner.operations.SqlToOperationConverter.convert(SqlToOperationConverter.java:204)
> at
> org.apache.flink.table.planner.delegation.ParserImpl.parse(ParserImpl.java:78)
> at
> org.apache.flink.table.api.internal.TableEnvironmentImpl.sqlUpdate(TableEnvironmentImpl.java:716)
> at com.bytedance.demo.SqlTest.main(SqlTest.java:64)
> Caused by: org.apache.calcite.runtime.CalciteContextException: From line 1,
> column 93 to line 1, column 115: No match found for function signature
> my_split(<CHARACTER>, <CHARACTER>)
> at sun.reflect.NativeConstructorAccessorImpl.newInstance0(Native Method)
> at
> sun.reflect.NativeConstructorAccessorImpl.newInstance(NativeConstructorAccessorImpl.java:62)
> at
> sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45)
> at java.lang.reflect.Constructor.newInstance(Constructor.java:423)
> at
> org.apache.calcite.runtime.Resources$ExInstWithCause.ex(Resources.java:457)
> at org.apache.calcite.sql.SqlUtil.newContextException(SqlUtil.java:839)
> at org.apache.calcite.sql.SqlUtil.newContextException(SqlUtil.java:824)
> at
> org.apache.calcite.sql.validate.SqlValidatorImpl.newValidationError(SqlValidatorImpl.java:5089)
> at
> org.apache.calcite.sql.validate.SqlValidatorImpl.handleUnresolvedFunction(SqlValidatorImpl.java:1882)
> at org.apache.calcite.sql.SqlFunction.deriveType(SqlFunction.java:305)
> at org.apache.calcite.sql.SqlFunction.deriveType(SqlFunction.java:218)
> at
> org.apache.calcite.sql.validate.SqlValidatorImpl$DeriveTypeVisitor.visit(SqlValidatorImpl.java:5858)
> at
> org.apache.calcite.sql.validate.SqlValidatorImpl$DeriveTypeVisitor.visit(SqlValidatorImpl.java:5845)
> at org.apache.calcite.sql.SqlCall.accept(SqlCall.java:139)
> at
> org.apache.calcite.sql.validate.SqlValidatorImpl.deriveTypeImpl(SqlValidatorImpl.java:1800)
> at
> org.apache.calcite.sql.validate.ProcedureNamespace.validateImpl(ProcedureNamespace.java:57)
> at
> org.apache.calcite.sql.validate.AbstractNamespace.validate(AbstractNamespace.java:84)
> at
> org.apache.calcite.sql.validate.SqlValidatorImpl.validateNamespace(SqlValidatorImpl.java:1110)
> at
> org.apache.calcite.sql.validate.SqlValidatorImpl.validateQuery(SqlValidatorImpl.java:1084)
> at
> org.apache.calcite.sql.validate.SqlValidatorImpl.validateFrom(SqlValidatorImpl.java:3256)
> at
> org.apache.calcite.sql.validate.SqlValidatorImpl.validateFrom(SqlValidatorImpl.java:3238)
> at
> org.apache.calcite.sql.validate.SqlValidatorImpl.validateJoin(SqlValidatorImpl.java:3303)
> at
> org.apache.flink.table.planner.calcite.FlinkCalciteSqlValidator.validateJoin(FlinkCalciteSqlValidator.java:86)
> at
> org.apache.calcite.sql.validate.SqlValidatorImpl.validateFrom(SqlValidatorImpl.java:3247)
> at
> org.apache.calcite.sql.validate.SqlValidatorImpl.validateSelect(SqlValidatorImpl.java:3510)
> at
> org.apache.calcite.sql.validate.SelectNamespace.validateImpl(SelectNamespace.java:60)
> at
> org.apache.calcite.sql.validate.AbstractNamespace.validate(AbstractNamespace.java:84)
> at
> org.apache.calcite.sql.validate.SqlValidatorImpl.validateNamespace(SqlValidatorImpl.java:1110)
> at
> org.apache.calcite.sql.validate.SqlValidatorImpl.validateQuery(SqlValidatorImpl.java:1084)
> at org.apache.calcite.sql.SqlSelect.validate(SqlSelect.java:232)
> at
> org.apache.calcite.sql.validate.SqlValidatorImpl.validateScopedExpression(SqlValidatorImpl.java:1059)
> at
> org.apache.calcite.sql.validate.SqlValidatorImpl.validate(SqlValidatorImpl.java:766)
> at
> org.apache.flink.table.planner.calcite.FlinkPlannerImpl.org$apache$flink$table$planner$calcite$FlinkPlannerImpl$$validate(FlinkPlannerImpl.scala:141)
> ... 7 more
> Caused by: org.apache.calcite.sql.validate.SqlValidatorException: No match
> found for function signature my_split(<CHARACTER>, <CHARACTER>)
> at sun.reflect.NativeConstructorAccessorImpl.newInstance0(Native Method)
> at
> sun.reflect.NativeConstructorAccessorImpl.newInstance(NativeConstructorAccessorImpl.java:62)
> at
> sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45)
> at java.lang.reflect.Constructor.newInstance(Constructor.java:423)
> at
> org.apache.calcite.runtime.Resources$ExInstWithCause.ex(Resources.java:457)
> at org.apache.calcite.runtime.Resources$ExInst.ex(Resources.java:550)
> ... 35 more
> {code}
> it's reported from user-zh:
> http://apache-flink.147419.n8.nabble.com/Flink-1-11-SQL-UDTF-No-match-found-for-function-signature-td4553.html
> CC [~twalthr]
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