Package org.apache.hadoop.hbase.master.balancer

Class TestSimpleLoadBalancer

java.lang.Object

org.apache.hadoop.hbase.master.balancer.BalancerTestBase

org.apache.hadoop.hbase.master.balancer.TestSimpleLoadBalancer

@Tag("org.apache.hadoop.hbase.testclassification.MasterTests") @Tag("org.apache.hadoop.hbase.testclassification.SmallTests")
public class TestSimpleLoadBalancer
extends BalancerTestBase

Test the load balancer that is created by default.

Nested Class Summary

Nested classes/interfaces inherited from class org.apache.hadoop.hbase.master.balancer.BalancerTestBase

BalancerTestBase.MockMapping

Field Summary

Fields

Modifier and Type	Field	Description
private static org.apache.hadoop.hbase.master.balancer.SimpleLoadBalancer	loadBalancer
private static final org.slf4j.Logger	LOG
private String	methodName
(package private) int[]	mockUniformCluster

Fields inherited from class org.apache.hadoop.hbase.master.balancer.BalancerTestBase

clusterStateMocks, clusterStateMocksWithNoSlop, clusterStateMocksWithSlop, conf, largeCluster, regionId

Constructor Summary

Constructors

Constructor	Description
TestSimpleLoadBalancer()

Method Summary

Modifier and Type	Method	Description
static void	beforeAllTests()
void	beforeEach(org.junit.jupiter.api.TestInfo testInfo)
void	testBalanceClusterOverall()	Test the load balancing algorithm.
void	testBalanceClusterOverallStrictly()
void	testImpactOfBalanceClusterOverall()	Test the load balancing algorithm.
private void	testImpactOfBalanceClusterOverall(boolean useLoadOfAllTable)
void	testImpactOfBalanceClusterOverallWithLoadOfAllTable()

Methods inherited from class org.apache.hadoop.hbase.master.balancer.BalancerTestBase

assertClusterAsBalanced, assertClusterOverallAsBalanced, assertRegionReplicaPlacement, convertToList, createRegions, createServerMap, mockCluster, mockClusterServers, mockClusterServers, mockClusterServers, mockClusterServersUnsorted, mockClusterServersWithTables, mockUniformClusterServers, printMock, printStats, randomRegions, randomRegions, randomServer, randomServers, reconcile, returnRegions, returnServer, returnServers, uniformRegions, updateLoad

Methods inherited from class java.lang.Object

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

Field Details

LOG

private static final org.slf4j.Logger LOG

loadBalancer

private static org.apache.hadoop.hbase.master.balancer.SimpleLoadBalancer loadBalancer

methodName

private String methodName

mockUniformCluster

int[] mockUniformCluster

Constructor Details

TestSimpleLoadBalancer

public TestSimpleLoadBalancer()

Method Details

beforeAllTests

@BeforeAll
public static void beforeAllTests()
                           throws Exception

Throws:

Exception

beforeEach

@BeforeEach
public void beforeEach(org.junit.jupiter.api.TestInfo testInfo)

testBalanceClusterOverall

@Test
public void testBalanceClusterOverall()
                               throws Exception

Test the load balancing algorithm. Invariant is that all servers should be hosting either floor(average) or ceiling(average) at both table level and cluster level

Throws:

Exception

testImpactOfBalanceClusterOverall

@Test
public void testImpactOfBalanceClusterOverall()
                                       throws Exception

Test the load balancing algorithm. Invariant is that all servers should be hosting either floor(average) or ceiling(average) at both table level and cluster level Deliberately generate a special case to show the overall strategy can achieve cluster level balance while the bytable strategy cannot

Throws:

Exception

testImpactOfBalanceClusterOverallWithLoadOfAllTable

@Test
public void testImpactOfBalanceClusterOverallWithLoadOfAllTable()
                                                         throws Exception

Throws:

Exception

testImpactOfBalanceClusterOverall

private void testImpactOfBalanceClusterOverall(boolean useLoadOfAllTable)
                                        throws Exception

Throws:

Exception

testBalanceClusterOverallStrictly

@Test
public void testBalanceClusterOverallStrictly()