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

Class TestUnattainableBalancerCostGoal

java.lang.Object

org.apache.hadoop.hbase.master.balancer.TestUnattainableBalancerCostGoal

public class TestUnattainableBalancerCostGoal
extends Object

If your minCostNeedsBalance is set too low, then the balancer should still eventually stop making moves as further cost improvements become impossible, and balancer plan calculation becomes wasteful. This test ensures that the balancer will not get stuck in a loop of continuously moving regions.

Field Summary

Fields

Modifier and Type	Field	Description
static final HBaseClassTestRule	CLASS_RULE
private static final org.slf4j.Logger	LOG
private static final org.apache.hadoop.hbase.TableName	NON_SYSTEM_TABLE_NAME
private static final int	NUM_REGIONS
private static final int	NUM_SERVERS
private static final org.apache.hadoop.hbase.ServerName[]	servers
private static final Map<org.apache.hadoop.hbase.ServerName,List<org.apache.hadoop.hbase.client.RegionInfo>>	serverToRegions
private static final org.apache.hadoop.hbase.TableName	SYSTEM_TABLE_NAME
private static final float	UNACHIEVABLE_COST_GOAL

Constructor Summary

Constructors

Constructor	Description
TestUnattainableBalancerCostGoal()

Method Summary

Modifier and Type	Method	Description
private boolean	isSystemTableIsolated(org.apache.hadoop.hbase.master.balancer.BalancerClusterState cluster)
static void	setup()
void	testSystemTableIsolation()

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

SYSTEM_TABLE_NAME

private static final org.apache.hadoop.hbase.TableName SYSTEM_TABLE_NAME

NON_SYSTEM_TABLE_NAME

private static final org.apache.hadoop.hbase.TableName NON_SYSTEM_TABLE_NAME

NUM_SERVERS

private static final int NUM_SERVERS

See Also:

• Constant Field Values

NUM_REGIONS

private static final int NUM_REGIONS

See Also:

• Constant Field Values

UNACHIEVABLE_COST_GOAL

private static final float UNACHIEVABLE_COST_GOAL

See Also:

• Constant Field Values

servers

private static final org.apache.hadoop.hbase.ServerName[] servers

serverToRegions

private static final Map<org.apache.hadoop.hbase.ServerName,List<org.apache.hadoop.hbase.client.RegionInfo>> serverToRegions

Constructor Details

TestUnattainableBalancerCostGoal

public TestUnattainableBalancerCostGoal()

Method Details

setup

public static void setup()

testSystemTableIsolation

public void testSystemTableIsolation()

isSystemTableIsolated

private boolean isSystemTableIsolated(org.apache.hadoop.hbase.master.balancer.BalancerClusterState cluster)