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[HUDI-3237] gracefully fail to change column data type (#4677)

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Yann Byron
2022-01-25 08:33:36 +08:00
committed by GitHub
parent bc7882cbe9
commit 26c3f797b0
4 changed files with 17 additions and 7 deletions
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4
hudi-spark-datasource/hudi-spark/src/test/resources/sql-statements.sql
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@@ -239,10 +239,6 @@ alter table h2_p add columns(ext0 int);
+----------+
| ok |
+----------+
alter table h2_p change column ext0 ext0 bigint;
+----------+
| ok |
+----------+
# DROP TABLE
drop table h0;

7
hudi-spark-datasource/hudi-spark/src/test/scala/org/apache/spark/sql/hudi/TestAlterTable.scala
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@@ -91,9 +91,10 @@ class TestAlterTable extends TestHoodieSqlBase {
)
// change column's data type
spark.sql(s"alter table $newTableName change column id id bigint")
assertResult(StructType(Seq(StructField("id", LongType, nullable = true))))(
spark.sql(s"select id from $newTableName").schema)
checkExceptionContain(s"alter table $newTableName change column id id bigint") (
"ALTER TABLE CHANGE COLUMN is not supported for changing column 'id'" +
" with type 'IntegerType' to 'id' with type 'LongType'"
)
// Insert data to the new table.
spark.sql(s"insert into $newTableName values(2, 'a2', 12, 1000, 'e0')")