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Posted to dev@flink.apache.org by "Flavio Pompermaier (Jira)" <ji...@apache.org> on 2020/07/15 12:08:00 UTC
[jira] [Created] (FLINK-18608) CustomizedConvertRule#convertCast
drops nullability
Flavio Pompermaier created FLINK-18608:
------------------------------------------
Summary: CustomizedConvertRule#convertCast drops nullability
Key: FLINK-18608
URL: https://issues.apache.org/jira/browse/FLINK-18608
Project: Flink
Issue Type: Bug
Components: Table SQL / Planner
Affects Versions: 1.11.0
Reporter: Flavio Pompermaier
The following program shows that nullability is not respected during the tranlastion:
{code:java}
final TableEnvironment tableEnv = DatalinksExecutionEnvironment.getBatchTableEnv();
final Table inputTable = tableEnv.fromValues(//
DataTypes.ROW(//
DataTypes.FIELD("col1", DataTypes.STRING()), //
DataTypes.FIELD("col2", DataTypes.STRING())//
), //
Row.of(1L, "Hello"), //
Row.of(2L, "Hello"), //
Row.of(3L, ""), //
Row.of(4L, "Ciao"));
tableEnv.createTemporaryView("ParquetDataset", inputTable);
tableEnv.executeSql(//
"CREATE TABLE `out` (\n" + //
"col1 STRING,\n" + //
"col2 STRING\n" + //
") WITH (\n" + //
" 'connector' = 'filesystem',\n" + //
// " 'format' = 'parquet',\n" + //
" 'update-mode' = 'append',\n" + //
" 'path' = 'file://" + TEST_FOLDER + "',\n" + //
" 'sink.shuffle-by-partition.enable' = 'true'\n" + //
")");
tableEnv.executeSql("INSERT INTO `out` SELECT * FROM ParquetDataset");
{code}
---------------------------------
Exception in thread "main" java.lang.AssertionError: Conversion to relational algebra failed to preserve datatypes:
validated type:
RecordType(VARCHAR(2147483647) CHARACTER SET "UTF-16LE" col1, VARCHAR(2147483647) CHARACTER SET "UTF-16LE" col2) NOT NULL
converted type:
RecordType(VARCHAR(2147483647) CHARACTER SET "UTF-16LE" NOT NULL col1, VARCHAR(2147483647) CHARACTER SET "UTF-16LE" NOT NULL col2) NOT NULL
rel:
LogicalProject(col1=[$0], col2=[$1])
LogicalUnion(all=[true])
LogicalProject(col1=[_UTF-16LE'1':VARCHAR(2147483647) CHARACTER SET "UTF-16LE"], col2=[_UTF-16LE'Hello':VARCHAR(2147483647) CHARACTER SET "UTF-16LE"])
LogicalValues(tuples=[[{ 0 }]])
LogicalProject(col1=[_UTF-16LE'2':VARCHAR(2147483647) CHARACTER SET "UTF-16LE"], col2=[_UTF-16LE'Hello':VARCHAR(2147483647) CHARACTER SET "UTF-16LE"])
LogicalValues(tuples=[[{ 0 }]])
LogicalProject(col1=[_UTF-16LE'3':VARCHAR(2147483647) CHARACTER SET "UTF-16LE"], col2=[_UTF-16LE'':VARCHAR(2147483647) CHARACTER SET "UTF-16LE"])
LogicalValues(tuples=[[{ 0 }]])
LogicalProject(col1=[_UTF-16LE'4':VARCHAR(2147483647) CHARACTER SET "UTF-16LE"], col2=[_UTF-16LE'Ciao':VARCHAR(2147483647) CHARACTER SET "UTF-16LE"])
LogicalValues(tuples=[[{ 0 }]])
at org.apache.calcite.sql2rel.SqlToRelConverter.checkConvertedType(SqlToRelConverter.java:465)
at org.apache.calcite.sql2rel.SqlToRelConverter.convertQuery(SqlToRelConverter.java:580)
at org.apache.flink.table.planner.calcite.FlinkPlannerImpl.org$apache$flink$table$planner$calcite$FlinkPlannerImpl$$rel(FlinkPlannerImpl.scala:164)
at org.apache.flink.table.planner.calcite.FlinkPlannerImpl.rel(FlinkPlannerImpl.scala:151)
at org.apache.flink.table.planner.operations.SqlToOperationConverter.toQueryOperation(SqlToOperationConverter.java:773)
at org.apache.flink.table.planner.operations.SqlToOperationConverter.convertSqlQuery(SqlToOperationConverter.java:745)
at org.apache.flink.table.planner.operations.SqlToOperationConverter.convert(SqlToOperationConverter.java:238)
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.executeSql(TableEnvironmentImpl.java:678)
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