本文整理汇总了Java中org.apache.cassandra.config.DatabaseDescriptor.setDynamicBadnessThreshold方法的典型用法代码示例。如果您正苦于以下问题：Java DatabaseDescriptor.setDynamicBadnessThreshold方法的具体用法？Java DatabaseDescriptor.setDynamicBadnessThreshold怎么用？Java DatabaseDescriptor.setDynamicBadnessThreshold使用的例子？那么, 这里精选的方法代码示例或许可以为您提供帮助。您也可以进一步了解该方法所在类org.apache.cassandra.config.DatabaseDescriptor的用法示例。
在下文中一共展示了DatabaseDescriptor.setDynamicBadnessThreshold方法的3个代码示例，这些例子默认根据受欢迎程度排序。您可以为喜欢或者感觉有用的代码点赞，您的评价将有助于系统推荐出更棒的Java代码示例。
示例1: updateSnitch
import org.apache.cassandra.config.DatabaseDescriptor; //导入方法依赖的package包/类
public void updateSnitch(String epSnitchClassName, Boolean dynamic, Integer dynamicUpdateInterval, Integer dynamicResetInterval, Double dynamicBadnessThreshold) throws ClassNotFoundException
{
IEndpointSnitch oldSnitch = DatabaseDescriptor.getEndpointSnitch();
// new snitch registers mbean during construction
IEndpointSnitch newSnitch;
try
{
newSnitch = FBUtilities.construct(epSnitchClassName, "snitch");
}
catch (ConfigurationException e)
{
throw new ClassNotFoundException(e.getMessage());
}
if (dynamic)
{
DatabaseDescriptor.setDynamicUpdateInterval(dynamicUpdateInterval);
DatabaseDescriptor.setDynamicResetInterval(dynamicResetInterval);
DatabaseDescriptor.setDynamicBadnessThreshold(dynamicBadnessThreshold);
newSnitch = new DynamicEndpointSnitch(newSnitch);
}
// point snitch references to the new instance
DatabaseDescriptor.setEndpointSnitch(newSnitch);
for (String ks : Schema.instance.getKeyspaces())
{
Keyspace.open(ks).getReplicationStrategy().snitch = newSnitch;
}
if (oldSnitch instanceof DynamicEndpointSnitch)
((DynamicEndpointSnitch)oldSnitch).unregisterMBean();
}
示例2: updateSnitch
import org.apache.cassandra.config.DatabaseDescriptor; //导入方法依赖的package包/类
public void updateSnitch(String epSnitchClassName, Boolean dynamic, Integer dynamicUpdateInterval, Integer dynamicResetInterval, Double dynamicBadnessThreshold) throws ClassNotFoundException
{
IEndpointSnitch oldSnitch = DatabaseDescriptor.getEndpointSnitch();
// new snitch registers mbean during construction
IEndpointSnitch newSnitch;
try
{
newSnitch = FBUtilities.construct(epSnitchClassName, "snitch");
}
catch (ConfigurationException e)
{
throw new ClassNotFoundException(e.getMessage());
}
if (dynamic)
{
DatabaseDescriptor.setDynamicUpdateInterval(dynamicUpdateInterval);
DatabaseDescriptor.setDynamicResetInterval(dynamicResetInterval);
DatabaseDescriptor.setDynamicBadnessThreshold(dynamicBadnessThreshold);
newSnitch = new DynamicEndpointSnitch(newSnitch);
}
// point snitch references to the new instance
DatabaseDescriptor.setEndpointSnitch(newSnitch);
for (String ks : Schema.instance.getKeyspaces())
{
Keyspace.open(ks).getReplicationStrategy().snitch = newSnitch;
}
if (oldSnitch instanceof DynamicEndpointSnitch)
((DynamicEndpointSnitch)oldSnitch).unregisterMBean();
updateTopology();
}
示例3: testConcurrency
import org.apache.cassandra.config.DatabaseDescriptor; //导入方法依赖的package包/类
@Test
public void testConcurrency() throws InterruptedException, IOException, ConfigurationException
{
// The goal of this test is to check for CASSANDRA-8448/CASSANDRA-9519
double badness = DatabaseDescriptor.getDynamicBadnessThreshold();
DatabaseDescriptor.setDynamicBadnessThreshold(0.0);
try
{
final int ITERATIONS = 10000;
// do this because SS needs to be initialized before DES can work properly.
StorageService.instance.unsafeInitialize();
SimpleSnitch ss = new SimpleSnitch();
DynamicEndpointSnitch dsnitch = new DynamicEndpointSnitch(ss, String.valueOf(ss.hashCode()));
InetAddress self = FBUtilities.getBroadcastAddress();
List<InetAddress> hosts = new ArrayList<>();
// We want a big list of hosts so sorting takes time, making it much more likely to reproduce the
// problem we're looking for.
for (int i = 0; i < 100; i++)
for (int j = 0; j < 256; j++)
hosts.add(InetAddress.getByAddress(new byte[]{127, 0, (byte)i, (byte)j}));
ScoreUpdater updater = new ScoreUpdater(dsnitch, hosts);
updater.start();
List<InetAddress> result = null;
for (int i = 0; i < ITERATIONS; i++)
result = dsnitch.getSortedListByProximity(self, hosts);
updater.stopped = true;
updater.join();
}
finally
{
DatabaseDescriptor.setDynamicBadnessThreshold(badness);
}
}