hi all
本人基于Flink 1.11 SNAPSHOT 在 Flink sql 作业中使用 UDTF, UDTF 的定义如下：
@FunctionHint(
input = {@DataTypeHint("STRING"), @DataTypeHint("STRING")},
output = @DataTypeHint("STRING")
)
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);
}
}
}
}
在flink sql中通过 create function splitByChar as '**.**.Split'
来创建这个function，在tableEnv 中调用executeSql(....) 来完成对这个 function的注册，在sql 后面的计算逻辑中
通过以下方式来调用这个UDTF
create view view_source_1 as select `dateTime，`itime`, lng,lat,net,event_info,
cast(split_index(T.s, '_', 0) as int) as time_page from view_source as a left
join LATERAL TABLE (splitByChar('a,b,c',',')) as T(s) on true;
结果一直出现以下错误信息：
org.apache.flink.table.api.ValidationException: SQL validation failed. From
line 3, column 25 to line 3, column 47: No match found for function signature
splitByChar(<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.delegation.ParserImpl.parse(ParserImpl.java:66)
at
org.apache.flink.table.api.internal.TableEnvironmentImpl.sqlQuery(TableEnvironmentImpl.java:629)
....................
Caused by: org.apache.calcite.runtime.CalciteContextException: From line 3,
column 25 to line 3, column 47: r(<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)
... 8 more
Caused by: org.apache.calcite.sql.validate.SqlValidatorException: No match
found for function signature splitByChar(<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)
之前在flink 1.10 里面使用是正常的， 问下各位大佬有没有在flink 1.11 遇到过这个错误， 麻烦提供一下帮助。
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邹云鹤
|
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[email protected]
|
签名由网易邮箱大师定制
