本文整理汇总了Java中org.apache.hadoop.hdfs.BlockReaderTestUtil.enableHdfsCachingTracing方法的典型用法代码示例。如果您正苦于以下问题：Java BlockReaderTestUtil.enableHdfsCachingTracing方法的具体用法？Java BlockReaderTestUtil.enableHdfsCachingTracing怎么用？Java BlockReaderTestUtil.enableHdfsCachingTracing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.hadoop.hdfs.BlockReaderTestUtil的用法示例。
在下文中一共展示了BlockReaderTestUtil.enableHdfsCachingTracing方法的2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: setup
import org.apache.hadoop.hdfs.BlockReaderTestUtil; //导入方法依赖的package包/类
@Before
public void setup() throws Exception {
conf = createCachingConf();
cluster =
new MiniDFSCluster.Builder(conf).numDataNodes(NUM_DATANODES).build();
cluster.waitActive();
dfs = cluster.getFileSystem();
proto = cluster.getNameNodeRpc();
namenode = cluster.getNameNode();
prevCacheManipulator = NativeIO.POSIX.getCacheManipulator();
NativeIO.POSIX.setCacheManipulator(new NoMlockCacheManipulator());
BlockReaderTestUtil.enableHdfsCachingTracing();
}
示例2: testRevocation
import org.apache.hadoop.hdfs.BlockReaderTestUtil; //导入方法依赖的package包/类
/**
* Test that when we have an uncache request, and the client refuses to release
* the replica for a long time, we will un-mlock it.
*/
@Test(timeout=120000)
public void testRevocation() throws Exception {
assumeTrue(NativeCodeLoader.isNativeCodeLoaded() && !Path.WINDOWS);
BlockReaderTestUtil.enableHdfsCachingTracing();
BlockReaderTestUtil.enableShortCircuitShmTracing();
Configuration conf = getDefaultConf();
// Set a really short revocation timeout.
conf.setLong(DFSConfigKeys.DFS_DATANODE_CACHE_REVOCATION_TIMEOUT_MS, 250L);
// Poll very often
conf.setLong(DFSConfigKeys.DFS_DATANODE_CACHE_REVOCATION_POLLING_MS, 2L);
MiniDFSCluster cluster = null;
cluster = new MiniDFSCluster.Builder(conf).numDataNodes(1).build();
cluster.waitActive();
DistributedFileSystem dfs = cluster.getFileSystem();
// Create and cache a file.
final String TEST_FILE = "/test_file2";
DFSTestUtil.createFile(dfs, new Path(TEST_FILE),
BLOCK_SIZE, (short)1, 0xcafe);
dfs.addCachePool(new CachePoolInfo("pool"));
long cacheDirectiveId =
dfs.addCacheDirective(new CacheDirectiveInfo.Builder().
setPool("pool").setPath(new Path(TEST_FILE)).
setReplication((short) 1).build());
FsDatasetSpi<?> fsd = cluster.getDataNodes().get(0).getFSDataset();
DFSTestUtil.verifyExpectedCacheUsage(BLOCK_SIZE, 1, fsd);
// Mmap the file.
FSDataInputStream in = dfs.open(new Path(TEST_FILE));
ByteBuffer buf =
in.read(null, BLOCK_SIZE, EnumSet.noneOf(ReadOption.class));
// Attempt to uncache file. The file should get uncached.
LOG.info("removing cache directive {}", cacheDirectiveId);
dfs.removeCacheDirective(cacheDirectiveId);
LOG.info("finished removing cache directive {}", cacheDirectiveId);
Thread.sleep(1000);
DFSTestUtil.verifyExpectedCacheUsage(0, 0, fsd);
// Cleanup
in.releaseBuffer(buf);
in.close();
cluster.shutdown();
}