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

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
static final HBaseClassTestRule	CLASS_RULE
private static org.apache.hadoop.hbase.master.balancer.SimpleLoadBalancer	loadBalancer
private static final org.slf4j.Logger	LOG
(package private) int[]	mockUniformCluster
org.junit.rules.TestName	name

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	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

CLASS_RULE

public static final HBaseClassTestRule CLASS_RULE

LOG

private static final org.slf4j.Logger LOG

loadBalancer

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

mockUniformCluster

int[] mockUniformCluster

name

public org.junit.rules.TestName name

Constructor Details

TestSimpleLoadBalancer

public TestSimpleLoadBalancer()

Method Details

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

testImpactOfBalanceClusterOverallWithLoadOfAllTable

public void testImpactOfBalanceClusterOverallWithLoadOfAllTable()
                                                         throws Exception

Throws:

Exception

testImpactOfBalanceClusterOverall

private void testImpactOfBalanceClusterOverall(boolean useLoadOfAllTable)
                                        throws Exception

Throws:

Exception

testBalanceClusterOverallStrictly

public void testBalanceClusterOverallStrictly()