org.apache.hadoop.hbase.master.balancer

Class TestDefaultLoadBalancer

java.lang.Object

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

org.apache.hadoop.hbase.master.balancer.TestDefaultLoadBalancer

public class TestDefaultLoadBalancer
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 and Description
static HBaseClassTestRule	CLASS_RULE
(package private) int[][]	clusterStateMocks
private static org.apache.hadoop.hbase.master.LoadBalancer	loadBalancer
private static org.slf4j.Logger	LOG
(package private) int[]	mockUniformCluster
org.junit.rules.TestName	name

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

conf, largeCluster, regionId

Constructor Summary

Constructors

Constructor and Description
TestDefaultLoadBalancer()

Method Summary

Modifier and Type	Method and Description
static void	beforeAllTests()
void	testBalanceClusterOverall() Test the load balancing algorithm.
void	testImpactOfBalanceClusterOverall() Test the load balancing algorithm.

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

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

Methods inherited from class java.lang.Object

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

Field Detail

CLASS_RULE

public static final HBaseClassTestRule CLASS_RULE

LOG

private static final org.slf4j.Logger LOG

loadBalancer

private static org.apache.hadoop.hbase.master.LoadBalancer loadBalancer

clusterStateMocks

int[][] clusterStateMocks

mockUniformCluster

int[] mockUniformCluster

name

public org.junit.rules.TestName name

Constructor Detail

TestDefaultLoadBalancer

public TestDefaultLoadBalancer()

Method Detail

beforeAllTests

public static void beforeAllTests()
                           throws Exception

Throws:

Exception

testBalanceClusterOverall

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

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