org.apache.drill.exec.physical.rowSet

Class TestHyperVectorReaders

java.lang.Object

org.apache.drill.test.BaseTest

org.apache.drill.test.DrillTest

org.apache.drill.test.SubOperatorTest

org.apache.drill.exec.physical.rowSet.TestHyperVectorReaders

public class TestHyperVectorReaders
extends SubOperatorTest

Test the reader mechanism that reads rows indexed via an SV4. SV4's introduce an additional level of indexing: each row may come from a different batch. The readers use the SV4 to find the root batch and vector, then must navigate downward from that vector for maps, repeated maps, lists, unions, repeated lists, nullable vectors and variable-length vectors.

This test does not cover repeated vectors; those tests should be added.

Nested Class Summary

Nested classes/interfaces inherited from class org.apache.drill.test.DrillTest

DrillTest.MemWatcher

Field Summary

Fields inherited from class org.apache.drill.test.SubOperatorTest

dirTestWatcher, fixture

Fields inherited from class org.apache.drill.test.DrillTest

logOutcome, objectMapper, REPEAT_RULE, thrownException, TIMEOUT

Constructor Summary

Constructors

Constructor and Description
TestHyperVectorReaders()

Method Summary

Modifier and Type	Method and Description
void	testMap() Maps are an interesting case.
void	testOptional() Test a nullable varchar.
void	testRepeated() Test an array to test the indirection from the repeated vector to the array offsets vector and the array values vector.
void	testRepeatedMap()
void	testRequired() Test the simplest case: a top-level required vector.
void	testScalarList()
void	testUnion()
void	testUnionList()
void	testVarWidth()

Methods inherited from class org.apache.drill.test.SubOperatorTest

classSetup, classTeardown

Methods inherited from class org.apache.drill.test.DrillTest

escapeJsonString, finishDrillTest, initDrillTest

Methods inherited from class java.lang.Object

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

Constructor Detail

TestHyperVectorReaders

public TestHyperVectorReaders()

Method Detail

testRequired

public void testRequired()

Test the simplest case: a top-level required vector. Has no contained vectors. This test focuses on the SV4 indirection mechanism itself.

testVarWidth

public void testVarWidth()

testOptional

public void testOptional()

Test a nullable varchar. Requires multiple indirections:

• From the SV4 to the nullable vector.
• From the nullable vector to the bits vector.
• From the nullable vector to the data vector.
• From the data vector to the offset vector.
• From the data vector to the values vector.

All are coordinated by the vector index and vector accessors. This test verifies that each of the indirections does, in fact, work as expected.

testRepeated

public void testRepeated()

Test an array to test the indirection from the repeated vector to the array offsets vector and the array values vector. (Uses varchar to add another level of indirection to the data offset and data values vectors.)

testMap

public void testMap()

Maps are an interesting case. The hyper-vector wrapper holds a mirror-image of the map members. So, we can reach the map members either via the vector wrappers or the original map vector.

testRepeatedMap

public void testRepeatedMap()

testUnion

public void testUnion()

testScalarList

public void testScalarList()

testUnionList

public void testUnionList()