本文整理汇总了Java中org.apache.hadoop.hbase.regionserver.MemStoreLAB.Allocation类的典型用法代码示例。如果您正苦于以下问题：Java Allocation类的具体用法？Java Allocation怎么用？Java Allocation使用的例子？那么恭喜您, 这里精选的类代码示例或许可以为您提供帮助。
Allocation类属于org.apache.hadoop.hbase.regionserver.MemStoreLAB包，在下文中一共展示了Allocation类的4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: testLABRandomAllocation
import org.apache.hadoop.hbase.regionserver.MemStoreLAB.Allocation; //导入依赖的package包/类
/**
* Test a bunch of random allocations
*/
@Test
public void testLABRandomAllocation() {
Random rand = new Random();
MemStoreLAB mslab = new MemStoreLAB();
int expectedOff = 0;
byte[] lastBuffer = null;
// 100K iterations by 0-1K alloc -> 50MB expected
// should be reasonable for unit test and also cover wraparound
// behavior
for (int i = 0; i < 100000; i++) {
int size = rand.nextInt(1000);
Allocation alloc = mslab.allocateBytes(size);
if (alloc.getData() != lastBuffer) {
expectedOff = 0;
lastBuffer = alloc.getData();
}
assertEquals(expectedOff, alloc.getOffset());
assertTrue("Allocation " + alloc + " overruns buffer",
alloc.getOffset() + size <= alloc.getData().length);
expectedOff += size;
}
}
示例2: testLABLargeAllocation
import org.apache.hadoop.hbase.regionserver.MemStoreLAB.Allocation; //导入依赖的package包/类
@Test
public void testLABLargeAllocation() {
MemStoreLAB mslab = new MemStoreLAB();
Allocation alloc = mslab.allocateBytes(2*1024*1024);
assertNull("2MB allocation shouldn't be satisfied by LAB.",
alloc);
}
示例3: testReusingChunks
import org.apache.hadoop.hbase.regionserver.MemStoreLAB.Allocation; //导入依赖的package包/类
@Test
public void testReusingChunks() {
Random rand = new Random();
MemStoreLAB mslab = new MemStoreLAB(conf, chunkPool);
int expectedOff = 0;
byte[] lastBuffer = null;
// Randomly allocate some bytes
for (int i = 0; i < 100; i++) {
int size = rand.nextInt(1000);
Allocation alloc = mslab.allocateBytes(size);
if (alloc.getData() != lastBuffer) {
expectedOff = 0;
lastBuffer = alloc.getData();
}
assertEquals(expectedOff, alloc.getOffset());
assertTrue("Allocation " + alloc + " overruns buffer", alloc.getOffset()
+ size <= alloc.getData().length);
expectedOff += size;
}
// chunks will be put back to pool after close
mslab.close();
int chunkCount = chunkPool.getPoolSize();
assertTrue(chunkCount > 0);
// reconstruct mslab
mslab = new MemStoreLAB(conf, chunkPool);
// chunk should be got from the pool, so we can reuse it.
mslab.allocateBytes(1000);
assertEquals(chunkCount - 1, chunkPool.getPoolSize());
}
示例4: AllocRecord
import org.apache.hadoop.hbase.regionserver.MemStoreLAB.Allocation; //导入依赖的package包/类
public AllocRecord(Allocation alloc, int size) {
super();
this.alloc = alloc;
this.size = size;
}