org.apache.drill.exec.physical.impl.agg

Class TestHashAggrSpill

java.lang.Object

DrillTest

org.apache.drill.exec.physical.impl.agg.TestHashAggrSpill

public class TestHashAggrSpill
extends DrillTest

Test spilling for the Hash Aggr operator (using the mock reader)

Field Summary

Fields

Modifier and Type	Field and Description
static int	DEFAULT_ROW_COUNT
BaseDirTestWatcher	dirTestWatcher

Constructor Summary

Constructors

Constructor and Description
TestHashAggrSpill()

Method Summary

Modifier and Type	Method and Description
void	testHashAggrFailWithFallbackDisabed() Test with the "fallback" option disabled: When not enough memory available to allow spilling, then fail (Resource error) !!
void	testHashAggrSecondaryTertiarySpill() Test Secondary and Tertiary spill cycles - Happens when some of the spilled partitions cause more spilling as they are read back
void	testHashAggrSuccessWithFallbackEnabled() Test with the "fallback" option ON: When not enough memory is available to allow spilling (internally need enough memory to create multiple partitions), then behave like the pre-1.11 Hash Aggregate: Allocate unlimited memory, no spill.
void	testNoPredictHashAggrSpill() Test with "needed memory" prediction turned off (i.e., exercise code paths that catch OOMs from the Hash Table and recover)
void	testSimpleHashAggrSpill() Test "normal" spilling: Only 2 (or 3) partitions (out of 4) would require spilling ("normal spill" means spill-cycle = 1 )

Methods inherited from class java.lang.Object

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

Field Detail

DEFAULT_ROW_COUNT

public static final int DEFAULT_ROW_COUNT

See Also:

Constant Field Values

dirTestWatcher

public final BaseDirTestWatcher dirTestWatcher

Constructor Detail

TestHashAggrSpill

public TestHashAggrSpill()

Method Detail

testSimpleHashAggrSpill

public void testSimpleHashAggrSpill()
                             throws Exception

Test "normal" spilling: Only 2 (or 3) partitions (out of 4) would require spilling ("normal spill" means spill-cycle = 1 )

Throws:

Exception

testNoPredictHashAggrSpill

public void testNoPredictHashAggrSpill()
                                throws Exception

Test with "needed memory" prediction turned off (i.e., exercise code paths that catch OOMs from the Hash Table and recover)

Throws:

Exception

testHashAggrSecondaryTertiarySpill

public void testHashAggrSecondaryTertiarySpill()
                                        throws Exception

Test Secondary and Tertiary spill cycles - Happens when some of the spilled partitions cause more spilling as they are read back

Throws:

Exception

testHashAggrFailWithFallbackDisabed

public void testHashAggrFailWithFallbackDisabed()
                                         throws Exception

Test with the "fallback" option disabled: When not enough memory available to allow spilling, then fail (Resource error) !!

Throws:

Exception

testHashAggrSuccessWithFallbackEnabled

public void testHashAggrSuccessWithFallbackEnabled()
                                            throws Exception

Test with the "fallback" option ON: When not enough memory is available to allow spilling (internally need enough memory to create multiple partitions), then behave like the pre-1.11 Hash Aggregate: Allocate unlimited memory, no spill.

Throws:

Exception