Package io.trino.tests.product.hive

Class TestReadUniontype

java.lang.Object

io.trino.tempto.ProductTest

io.trino.tests.product.hive.HiveProductTest

io.trino.tests.product.hive.TestReadUniontype

public class TestReadUniontype
extends HiveProductTest

Constructor Summary

Constructors

Constructor	Description
TestReadUniontype()

Method Summary

Modifier and Type	Method	Description
void	cleanup()
static Object[][]	storageFormats()
void	testORCStructToUnionSchemaEvolution()	When reading AVRO file, Trino needs the schema information from Hive metastore to deserialize Avro files.
void	testORCUnionToStructSchemaEvolution()	When reading AVRO file, Trino needs the schema information from Hive metastore to deserialize Avro files.
void	testReadOrcUniontypeWithCheckpoint()
void	testReadUniontype(String storageFormat)
void	testReadUniontypeWithDereference(String createTableSql, String insertSql, String selectSql, List<Object> expectedResult, String selectTagSql, List<Object> expectedTagResult, String dropTableSql)
void	testUnionTypeSchemaEvolution(String storageFormat)
static Object[][]	unionDereferenceTestCases()

Methods inherited from class io.trino.tests.product.hive.HiveProductTest

getHiveVersionMajor, getHiveVersionMinor, getHiveVersionPatch, isHiveWithBrokenAvroTimestamps

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Constructor Details

TestReadUniontype

public TestReadUniontype()

Method Details

cleanup

public void cleanup()

storageFormats

public static Object[][] storageFormats()

unionDereferenceTestCases

public static Object[][] unionDereferenceTestCases()

testReadUniontype

public void testReadUniontype(String storageFormat)

testReadUniontypeWithDereference

public void testReadUniontypeWithDereference(String createTableSql,
 String insertSql,
 String selectSql,
 List<Object> expectedResult,
 String selectTagSql,
 List<Object> expectedTagResult,
 String dropTableSql)

testUnionTypeSchemaEvolution

public void testUnionTypeSchemaEvolution(String storageFormat)

testORCUnionToStructSchemaEvolution

public void testORCUnionToStructSchemaEvolution()

When reading AVRO file, Trino needs the schema information from Hive metastore to deserialize Avro files. Therefore, when an ALTER table was issued in which the hive metastore changed the schema into an incompatible format, from Union to Struct or from Struct to Union in this case, Trino could not read those Avro files using the modified Hive metastore schema. However, when reading ORC files, Trino does not need schema information from Hive metastore to deserialize ORC files. Therefore, it can read ORC files even after changing the schema.

testORCStructToUnionSchemaEvolution

public void testORCStructToUnionSchemaEvolution()

When reading AVRO file, Trino needs the schema information from Hive metastore to deserialize Avro files. Therefore, when an ALTER table was issued in which the hive metastore changed the schema into an incompatible format, from Union to Struct or from Struct to Union in this case, Trino could not read those Avro files using the modified Hive metastore schema. However, when reading ORC files, Trino does not need schema information from Hive metastore to deserialize ORC files. Therefore, it can read ORC files even after changing the schema.

testReadOrcUniontypeWithCheckpoint

public void testReadOrcUniontypeWithCheckpoint()