本文整理汇总了Java中org.apache.cassandra.io.util.FileUtils.isCleanerAvailable方法的典型用法代码示例。如果您正苦于以下问题:Java FileUtils.isCleanerAvailable方法的具体用法?Java FileUtils.isCleanerAvailable怎么用?Java FileUtils.isCleanerAvailable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.io.util.FileUtils
的用法示例。
在下文中一共展示了FileUtils.isCleanerAvailable方法的6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: getMemtableAllocatorPool
import org.apache.cassandra.io.util.FileUtils; //导入方法依赖的package包/类
public static MemtablePool getMemtableAllocatorPool()
{
long heapLimit = ((long) conf.memtable_heap_space_in_mb) << 20;
long offHeapLimit = ((long) conf.memtable_offheap_space_in_mb) << 20;
switch (conf.memtable_allocation_type)
{
case unslabbed_heap_buffers:
return new HeapPool(heapLimit, conf.memtable_cleanup_threshold, new ColumnFamilyStore.FlushLargestColumnFamily());
case heap_buffers:
return new SlabPool(heapLimit, 0, conf.memtable_cleanup_threshold, new ColumnFamilyStore.FlushLargestColumnFamily());
case offheap_buffers:
if (!FileUtils.isCleanerAvailable())
{
logger.error("Could not free direct byte buffer: offheap_buffers is not a safe memtable_allocation_type without this ability, please adjust your config. This feature is only guaranteed to work on an Oracle JVM. Refusing to start.");
System.exit(-1);
}
return new SlabPool(heapLimit, offHeapLimit, conf.memtable_cleanup_threshold, new ColumnFamilyStore.FlushLargestColumnFamily());
case offheap_objects:
return new NativePool(heapLimit, offHeapLimit, conf.memtable_cleanup_threshold, new ColumnFamilyStore.FlushLargestColumnFamily());
default:
throw new AssertionError();
}
}
示例2: getDirectoryForNewSSTables
import org.apache.cassandra.io.util.FileUtils; //导入方法依赖的package包/类
public File getDirectoryForNewSSTables()
{
File path = getWriteableLocationAsFile();
// Requesting GC has a chance to free space only if we're using mmap and a non SUN jvm
if (path == null
&& (DatabaseDescriptor.getDiskAccessMode() == Config.DiskAccessMode.mmap || DatabaseDescriptor.getIndexAccessMode() == Config.DiskAccessMode.mmap)
&& !FileUtils.isCleanerAvailable())
{
logger.info("Forcing GC to free up disk space. Upgrade to the Oracle JVM to avoid this");
StorageService.instance.requestGC();
// retry after GCing has forced unmap of compacted SSTables so they can be deleted
// Note: GCInspector will do this already, but only sun JVM supports GCInspector so far
SSTableDeletingTask.rescheduleFailedTasks();
Uninterruptibles.sleepUninterruptibly(10, TimeUnit.SECONDS);
path = getWriteableLocationAsFile();
}
return path;
}
示例3: close
import org.apache.cassandra.io.util.FileUtils; //导入方法依赖的package包/类
@Override
public void close()
{
if (!FileUtils.isCleanerAvailable())
return;
/*
* Try forcing the unmapping of pages using undocumented unsafe sun APIs.
* If this fails (non Sun JVM), we'll have to wait for the GC to finalize the mapping.
* If this works and a thread tries to access any page, hell will unleash on earth.
*/
try
{
for (MappedByteBuffer segment : pages)
FileUtils.clean(segment);
}
catch (Exception e)
{
// This is not supposed to happen
}
}
示例4: getMemtableAllocatorPool
import org.apache.cassandra.io.util.FileUtils; //导入方法依赖的package包/类
public static MemtablePool getMemtableAllocatorPool()
{
long heapLimit = ((long) conf.memtable_heap_space_in_mb) << 20;
long offHeapLimit = ((long) conf.memtable_offheap_space_in_mb) << 20;
switch (conf.memtable_allocation_type)
{
case unslabbed_heap_buffers:
return new HeapPool(heapLimit, conf.memtable_cleanup_threshold, new ColumnFamilyStore.FlushLargestColumnFamily());
case heap_buffers:
return new SlabPool(heapLimit, 0, conf.memtable_cleanup_threshold, new ColumnFamilyStore.FlushLargestColumnFamily());
case offheap_buffers:
if (!FileUtils.isCleanerAvailable())
{
throw new IllegalStateException("Could not free direct byte buffer: offheap_buffers is not a safe memtable_allocation_type without this ability, please adjust your config. This feature is only guaranteed to work on an Oracle JVM. Refusing to start.");
}
return new SlabPool(heapLimit, offHeapLimit, conf.memtable_cleanup_threshold, new ColumnFamilyStore.FlushLargestColumnFamily());
case offheap_objects:
throw new ConfigurationException("offheap_objects are not available in 3.0. They should be re-introduced in a future release, see https://issues.apache.org/jira/browse/CASSANDRA-9472 for details");
// return new NativePool(heapLimit, offHeapLimit, conf.memtable_cleanup_threshold, new ColumnFamilyStore.FlushLargestColumnFamily());
default:
throw new AssertionError();
}
}
示例5: internalClose
import org.apache.cassandra.io.util.FileUtils; //导入方法依赖的package包/类
void internalClose()
{
try
{
if (FileUtils.isCleanerAvailable())
FileUtils.clean(buffer);
logFileAccessor.close();
}
catch (IOException e)
{
throw new FSWriteError(e, getPath());
}
}
示例6: internalClose
import org.apache.cassandra.io.util.FileUtils; //导入方法依赖的package包/类
@Override
protected void internalClose()
{
if (FileUtils.isCleanerAvailable())
FileUtils.clean(buffer);
super.internalClose();
}