本文整理汇总了Java中org.apache.hadoop.hdfs.server.namenode.snapshot.SnapshotTestHelper.compareDumpedTreeInFile方法的典型用法代码示例。如果您正苦于以下问题：Java SnapshotTestHelper.compareDumpedTreeInFile方法的具体用法？Java SnapshotTestHelper.compareDumpedTreeInFile怎么用？Java SnapshotTestHelper.compareDumpedTreeInFile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.server.namenode.snapshot.SnapshotTestHelper的用法示例。
在下文中一共展示了SnapshotTestHelper.compareDumpedTreeInFile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: checkImage
import org.apache.hadoop.hdfs.server.namenode.snapshot.SnapshotTestHelper; //导入方法依赖的package包/类
void checkImage(int s) throws IOException {
final String name = "s" + s;
// dump the fsdir tree
File fsnBefore = dumpTree2File(name + "_before");
// save the namesystem to a temp file
File imageFile = saveFSImageToTempFile();
long numSdirBefore = fsn.getNumSnapshottableDirs();
long numSnapshotBefore = fsn.getNumSnapshots();
SnapshottableDirectoryStatus[] dirBefore = hdfs.getSnapshottableDirListing();
// shutdown the cluster
cluster.shutdown();
// dump the fsdir tree
File fsnBetween = dumpTree2File(name + "_between");
SnapshotTestHelper.compareDumpedTreeInFile(fsnBefore, fsnBetween, true);
// restart the cluster, and format the cluster
cluster = new MiniDFSCluster.Builder(conf).format(true)
.numDataNodes(REPLICATION).build();
cluster.waitActive();
fsn = cluster.getNamesystem();
hdfs = cluster.getFileSystem();
// load the namesystem from the temp file
loadFSImageFromTempFile(imageFile);
// dump the fsdir tree again
File fsnAfter = dumpTree2File(name + "_after");
// compare two dumped tree
SnapshotTestHelper.compareDumpedTreeInFile(fsnBefore, fsnAfter, true);
long numSdirAfter = fsn.getNumSnapshottableDirs();
long numSnapshotAfter = fsn.getNumSnapshots();
SnapshottableDirectoryStatus[] dirAfter = hdfs.getSnapshottableDirListing();
Assert.assertEquals(numSdirBefore, numSdirAfter);
Assert.assertEquals(numSnapshotBefore, numSnapshotAfter);
Assert.assertEquals(dirBefore.length, dirAfter.length);
List<String> pathListBefore = new ArrayList<String>();
for (SnapshottableDirectoryStatus sBefore : dirBefore) {
pathListBefore.add(sBefore.getFullPath().toString());
}
for (SnapshottableDirectoryStatus sAfter : dirAfter) {
Assert.assertTrue(pathListBefore.contains(sAfter.getFullPath().toString()));
}
}
示例2: testSaveLoadImageWithAppending
import org.apache.hadoop.hdfs.server.namenode.snapshot.SnapshotTestHelper; //导入方法依赖的package包/类
/**
* Test the fsimage saving/loading while file appending.
*/
@Test (timeout=60000)
public void testSaveLoadImageWithAppending() throws Exception {
Path sub1 = new Path(dir, "sub1");
Path sub1file1 = new Path(sub1, "sub1file1");
Path sub1file2 = new Path(sub1, "sub1file2");
DFSTestUtil.createFile(hdfs, sub1file1, BLOCKSIZE, REPLICATION, seed);
DFSTestUtil.createFile(hdfs, sub1file2, BLOCKSIZE, REPLICATION, seed);
// 1. create snapshot s0
hdfs.allowSnapshot(dir);
hdfs.createSnapshot(dir, "s0");
// 2. create snapshot s1 before appending sub1file1 finishes
HdfsDataOutputStream out = appendFileWithoutClosing(sub1file1, BLOCKSIZE);
out.hsync(EnumSet.of(SyncFlag.UPDATE_LENGTH));
// also append sub1file2
DFSTestUtil.appendFile(hdfs, sub1file2, BLOCKSIZE);
hdfs.createSnapshot(dir, "s1");
out.close();
// 3. create snapshot s2 before appending finishes
out = appendFileWithoutClosing(sub1file1, BLOCKSIZE);
out.hsync(EnumSet.of(SyncFlag.UPDATE_LENGTH));
hdfs.createSnapshot(dir, "s2");
out.close();
// 4. save fsimage before appending finishes
out = appendFileWithoutClosing(sub1file1, BLOCKSIZE);
out.hsync(EnumSet.of(SyncFlag.UPDATE_LENGTH));
// dump fsdir
File fsnBefore = dumpTree2File("before");
// save the namesystem to a temp file
File imageFile = saveFSImageToTempFile();
// 5. load fsimage and compare
// first restart the cluster, and format the cluster
out.close();
cluster.shutdown();
cluster = new MiniDFSCluster.Builder(conf).format(true)
.numDataNodes(REPLICATION).build();
cluster.waitActive();
fsn = cluster.getNamesystem();
hdfs = cluster.getFileSystem();
// then load the fsimage
loadFSImageFromTempFile(imageFile);
// dump the fsdir tree again
File fsnAfter = dumpTree2File("after");
// compare two dumped tree
SnapshotTestHelper.compareDumpedTreeInFile(fsnBefore, fsnAfter, true);
}