本文整理汇总了Java中org.apache.hadoop.hdfs.qjournal.MiniJournalCluster.getCurrentDir方法的典型用法代码示例。如果您正苦于以下问题：Java MiniJournalCluster.getCurrentDir方法的具体用法？Java MiniJournalCluster.getCurrentDir怎么用？Java MiniJournalCluster.getCurrentDir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.qjournal.MiniJournalCluster的用法示例。
在下文中一共展示了MiniJournalCluster.getCurrentDir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: checkRecovery
import org.apache.hadoop.hdfs.qjournal.MiniJournalCluster; //导入方法依赖的package包/类
private void checkRecovery(MiniJournalCluster cluster,
long segmentTxId, long expectedEndTxId)
throws IOException {
int numFinalized = 0;
for (int i = 0; i < cluster.getNumNodes(); i++) {
File logDir = cluster.getCurrentDir(i, JID);
EditLogFile elf = FileJournalManager.getLogFile(logDir, segmentTxId);
if (elf == null) {
continue;
}
if (!elf.isInProgress()) {
numFinalized++;
if (elf.getLastTxId() != expectedEndTxId) {
fail("File " + elf + " finalized to wrong txid, expected " +
expectedEndTxId);
}
}
}
if (numFinalized < cluster.getQuorumSize()) {
fail("Did not find a quorum of finalized logs starting at " +
segmentTxId);
}
}
示例2: testRollbackWithQJM
import org.apache.hadoop.hdfs.qjournal.MiniJournalCluster; //导入方法依赖的package包/类
@Test
public void testRollbackWithQJM() throws Exception {
final Configuration conf = new HdfsConfiguration();
MiniJournalCluster mjc = null;
MiniDFSCluster cluster = null;
final Path foo = new Path("/foo");
final Path bar = new Path("/bar");
try {
mjc = new MiniJournalCluster.Builder(conf).numJournalNodes(
NUM_JOURNAL_NODES).build();
conf.set(DFSConfigKeys.DFS_NAMENODE_EDITS_DIR_KEY, mjc
.getQuorumJournalURI(JOURNAL_ID).toString());
cluster = new MiniDFSCluster.Builder(conf).numDataNodes(0).build();
cluster.waitActive();
DistributedFileSystem dfs = cluster.getFileSystem();
final DFSAdmin dfsadmin = new DFSAdmin(conf);
dfs.mkdirs(foo);
// start rolling upgrade
dfs.setSafeMode(SafeModeAction.SAFEMODE_ENTER);
Assert.assertEquals(0,
dfsadmin.run(new String[] { "-rollingUpgrade", "prepare" }));
dfs.setSafeMode(SafeModeAction.SAFEMODE_LEAVE);
// create new directory
dfs.mkdirs(bar);
dfs.close();
// rollback
cluster.restartNameNode("-rollingUpgrade", "rollback");
// make sure /foo is still there, but /bar is not
dfs = cluster.getFileSystem();
Assert.assertTrue(dfs.exists(foo));
Assert.assertFalse(dfs.exists(bar));
// check storage in JNs
for (int i = 0; i < NUM_JOURNAL_NODES; i++) {
File dir = mjc.getCurrentDir(0, JOURNAL_ID);
// segments:(startSegment, mkdir, endSegment), (startSegment, upgrade
// marker, mkdir, endSegment)
checkJNStorage(dir, 4, 7);
}
} finally {
if (cluster != null) {
cluster.shutdown();
}
if (mjc != null) {
mjc.shutdown();
}
}
}
示例3: testRollbackWithQJM
import org.apache.hadoop.hdfs.qjournal.MiniJournalCluster; //导入方法依赖的package包/类
@Test
public void testRollbackWithQJM() throws Exception {
final Configuration conf = new HdfsConfiguration();
MiniJournalCluster mjc = null;
MiniDFSCluster cluster = null;
final Path foo = new Path("/foo");
final Path bar = new Path("/bar");
try {
mjc = new MiniJournalCluster.Builder(conf).numJournalNodes(
NUM_JOURNAL_NODES).build();
mjc.waitActive();
conf.set(DFSConfigKeys.DFS_NAMENODE_EDITS_DIR_KEY, mjc
.getQuorumJournalURI(JOURNAL_ID).toString());
cluster = new MiniDFSCluster.Builder(conf).numDataNodes(0).build();
cluster.waitActive();
DistributedFileSystem dfs = cluster.getFileSystem();
final DFSAdmin dfsadmin = new DFSAdmin(conf);
dfs.mkdirs(foo);
// start rolling upgrade
dfs.setSafeMode(SafeModeAction.SAFEMODE_ENTER);
Assert.assertEquals(0,
dfsadmin.run(new String[] { "-rollingUpgrade", "prepare" }));
dfs.setSafeMode(SafeModeAction.SAFEMODE_LEAVE);
// create new directory
dfs.mkdirs(bar);
dfs.close();
// rollback
cluster.restartNameNode("-rollingUpgrade", "rollback");
// make sure /foo is still there, but /bar is not
dfs = cluster.getFileSystem();
Assert.assertTrue(dfs.exists(foo));
Assert.assertFalse(dfs.exists(bar));
// check storage in JNs
for (int i = 0; i < NUM_JOURNAL_NODES; i++) {
File dir = mjc.getCurrentDir(0, JOURNAL_ID);
// segments:(startSegment, mkdir, endSegment), (startSegment, upgrade
// marker, mkdir, endSegment)
checkJNStorage(dir, 4, 7);
}
} finally {
if (cluster != null) {
cluster.shutdown();
}
if (mjc != null) {
mjc.shutdown();
}
}
}