本文整理汇总了Java中org.apache.cassandra.db.SystemKeyspace.getSSTableReadMeter方法的典型用法代码示例。如果您正苦于以下问题：Java SystemKeyspace.getSSTableReadMeter方法的具体用法？Java SystemKeyspace.getSSTableReadMeter怎么用？Java SystemKeyspace.getSSTableReadMeter使用的例子？那么恭喜您, 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.db.SystemKeyspace的用法示例。
在下文中一共展示了SystemKeyspace.getSSTableReadMeter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: ensureReadMeter
import org.apache.cassandra.db.SystemKeyspace; //导入方法依赖的package包/类
void ensureReadMeter()
{
if (readMeter != null)
return;
// Don't track read rates for tables in the system keyspace and don't bother trying to load or persist
// the read meter when in client mode.
if (Keyspace.SYSTEM_KS.equals(desc.ksname) || Config.isClientMode())
{
readMeter = null;
readMeterSyncFuture = null;
return;
}
readMeter = SystemKeyspace.getSSTableReadMeter(desc.ksname, desc.cfname, desc.generation);
// sync the average read rate to system.sstable_activity every five minutes, starting one minute from now
readMeterSyncFuture = syncExecutor.scheduleAtFixedRate(new Runnable()
{
public void run()
{
if (!isCompacted.get())
{
meterSyncThrottle.acquire();
SystemKeyspace.persistSSTableReadMeter(desc.ksname, desc.cfname, desc.generation, readMeter);
}
}
}, 1, 5, TimeUnit.MINUTES);
}
示例2: SSTableReader
import org.apache.cassandra.db.SystemKeyspace; //导入方法依赖的package包/类
private SSTableReader(final Descriptor desc,
Set<Component> components,
CFMetaData metadata,
IPartitioner partitioner,
long maxDataAge,
StatsMetadata sstableMetadata,
boolean isOpenEarly)
{
super(desc, components, metadata, partitioner);
this.sstableMetadata = sstableMetadata;
this.maxDataAge = maxDataAge;
this.isOpenEarly = isOpenEarly;
deletingTask = new SSTableDeletingTask(this);
// Don't track read rates for tables in the system keyspace and don't bother trying to load or persist
// the read meter when in client mode
if (Keyspace.SYSTEM_KS.equals(desc.ksname) || Config.isClientMode())
{
readMeter = null;
readMeterSyncFuture = null;
return;
}
readMeter = SystemKeyspace.getSSTableReadMeter(desc.ksname, desc.cfname, desc.generation);
// sync the average read rate to system.sstable_activity every five minutes, starting one minute from now
readMeterSyncFuture = syncExecutor.scheduleAtFixedRate(new Runnable()
{
public void run()
{
if (!isCompacted.get())
{
meterSyncThrottle.acquire();
SystemKeyspace.persistSSTableReadMeter(desc.ksname, desc.cfname, desc.generation, readMeter);
}
}
}, 1, 5, TimeUnit.MINUTES);
}
示例3: SSTableReader
import org.apache.cassandra.db.SystemKeyspace; //导入方法依赖的package包/类
private SSTableReader(final Descriptor desc,
Set<Component> components,
CFMetaData metadata,
IPartitioner partitioner,
long maxDataAge,
StatsMetadata sstableMetadata)
{
super(desc, components, metadata, partitioner);
this.sstableMetadata = sstableMetadata;
this.maxDataAge = maxDataAge;
deletingTask = new SSTableDeletingTask(this);
// Don't track read rates for tables in the system keyspace and don't bother trying to load or persist
// the read meter when in client mode
if (Keyspace.SYSTEM_KS.equals(desc.ksname) || Config.isClientMode())
{
readMeter = null;
readMeterSyncFuture = null;
return;
}
readMeter = SystemKeyspace.getSSTableReadMeter(desc.ksname, desc.cfname, desc.generation);
// sync the average read rate to system.sstable_activity every five minutes, starting one minute from now
readMeterSyncFuture = syncExecutor.scheduleAtFixedRate(new Runnable()
{
public void run()
{
if (!isCompacted.get())
{
meterSyncThrottle.acquire();
SystemKeyspace.persistSSTableReadMeter(desc.ksname, desc.cfname, desc.generation, readMeter);
}
}
}, 1, 5, TimeUnit.MINUTES);
}