List of usage examples for org.apache.hadoop.hdfs DistributedFileSystem exists
public boolean exists(Path f) throws IOException
From source file:org.apache.tajo.storage.TestFileStorageManager.java
License:Apache License
@Test public void testGetSplitWithBlockStorageLocationsBatching() throws Exception { final Configuration conf = new HdfsConfiguration(); String testDataPath = TEST_PATH + "/" + UUID.randomUUID().toString(); conf.set(MiniDFSCluster.HDFS_MINIDFS_BASEDIR, testDataPath); conf.setLong(DFSConfigKeys.DFS_NAMENODE_MIN_BLOCK_SIZE_KEY, 0); conf.setBoolean(DFSConfigKeys.DFS_HDFS_BLOCKS_METADATA_ENABLED, true); final MiniDFSCluster cluster = new MiniDFSCluster.Builder(conf).numDataNodes(2).build(); cluster.waitClusterUp();// w ww. jav a 2 s .c om TajoConf tajoConf = new TajoConf(conf); tajoConf.setVar(TajoConf.ConfVars.ROOT_DIR, cluster.getFileSystem().getUri() + "/tajo"); int testCount = 10; Path tablePath = new Path("/testGetSplitWithBlockStorageLocationsBatching"); try { DistributedFileSystem fs = cluster.getFileSystem(); // Create test files for (int i = 0; i < testCount; i++) { Path tmpFile = new Path(tablePath, "tmpfile" + i + ".dat"); DFSTestUtil.createFile(fs, tmpFile, 10, (short) 2, 0xDEADDEADl); } assertTrue(fs.exists(tablePath)); FileStorageManager sm = (FileStorageManager) StorageManager.getFileStorageManager(tajoConf); assertEquals(fs.getUri(), sm.getFileSystem().getUri()); Schema schema = new Schema(); schema.addColumn("id", Type.INT4); schema.addColumn("age", Type.INT4); schema.addColumn("name", Type.TEXT); TableMeta meta = CatalogUtil.newTableMeta(StoreType.CSV); List<Fragment> splits = Lists.newArrayList(); splits.addAll(sm.getSplits("data", meta, schema, tablePath)); assertEquals(testCount, splits.size()); assertEquals(2, splits.get(0).getHosts().length); assertEquals(2, ((FileFragment) splits.get(0)).getDiskIds().length); assertNotEquals(-1, ((FileFragment) splits.get(0)).getDiskIds()[0]); fs.close(); } finally { cluster.shutdown(true); } }
From source file:org.apache.tajo.storage.TestFileTablespace.java
License:Apache License
@Test public void testGetSplit() throws Exception { final Configuration conf = new HdfsConfiguration(); String testDataPath = TEST_PATH + "/" + UUID.randomUUID().toString(); conf.set(MiniDFSCluster.HDFS_MINIDFS_BASEDIR, testDataPath); conf.setLong(DFSConfigKeys.DFS_NAMENODE_MIN_BLOCK_SIZE_KEY, 0); conf.setBoolean(DFSConfigKeys.DFS_HDFS_BLOCKS_METADATA_ENABLED, false); final MiniDFSCluster cluster = new MiniDFSCluster.Builder(conf).numDataNodes(1).build(); cluster.waitClusterUp();/* ww w . j a v a 2s. c o m*/ TajoConf tajoConf = new TajoConf(conf); tajoConf.setVar(TajoConf.ConfVars.ROOT_DIR, cluster.getFileSystem().getUri() + "/tajo"); int testCount = 10; Path tablePath = new Path("/testGetSplit"); try { DistributedFileSystem fs = cluster.getFileSystem(); // Create test partitions List<Path> partitions = Lists.newArrayList(); for (int i = 0; i < testCount; i++) { Path tmpFile = new Path(tablePath, String.valueOf(i)); DFSTestUtil.createFile(fs, new Path(tmpFile, "tmpfile.dat"), 10, (short) 2, 0xDEADDEADl); partitions.add(tmpFile); } assertTrue(fs.exists(tablePath)); FileTablespace space = new FileTablespace("testGetSplit", fs.getUri()); space.init(new TajoConf(conf)); assertEquals(fs.getUri(), space.getUri()); Schema schema = new Schema(); schema.addColumn("id", Type.INT4); schema.addColumn("age", Type.INT4); schema.addColumn("name", Type.TEXT); TableMeta meta = CatalogUtil.newTableMeta("TEXT"); List<Fragment> splits = Lists.newArrayList(); // Get FileFragments in partition batch splits.addAll(space.getSplits("data", meta, schema, partitions.toArray(new Path[partitions.size()]))); assertEquals(testCount, splits.size()); // -1 is unknown volumeId assertEquals(-1, ((FileFragment) splits.get(0)).getDiskIds()[0]); splits.clear(); splits.addAll(space.getSplits("data", meta, schema, partitions.subList(0, partitions.size() / 2).toArray(new Path[partitions.size() / 2]))); assertEquals(testCount / 2, splits.size()); assertEquals(1, splits.get(0).getHosts().length); assertEquals(-1, ((FileFragment) splits.get(0)).getDiskIds()[0]); fs.close(); } finally { cluster.shutdown(true); } }
From source file:org.apache.tajo.storage.TestFileTablespace.java
License:Apache License
@Test public void testGetSplitWithBlockStorageLocationsBatching() throws Exception { final Configuration conf = new HdfsConfiguration(); String testDataPath = TEST_PATH + "/" + UUID.randomUUID().toString(); conf.set(MiniDFSCluster.HDFS_MINIDFS_BASEDIR, testDataPath); conf.setLong(DFSConfigKeys.DFS_NAMENODE_MIN_BLOCK_SIZE_KEY, 0); conf.setBoolean(DFSConfigKeys.DFS_HDFS_BLOCKS_METADATA_ENABLED, true); final MiniDFSCluster cluster = new MiniDFSCluster.Builder(conf).numDataNodes(2).build(); cluster.waitClusterUp();/*from w ww . j av a 2 s . com*/ TajoConf tajoConf = new TajoConf(conf); tajoConf.setVar(TajoConf.ConfVars.ROOT_DIR, cluster.getFileSystem().getUri() + "/tajo"); int testCount = 10; Path tablePath = new Path("/testGetSplitWithBlockStorageLocationsBatching"); try { DistributedFileSystem fs = cluster.getFileSystem(); // Create test files for (int i = 0; i < testCount; i++) { Path tmpFile = new Path(tablePath, "tmpfile" + i + ".dat"); DFSTestUtil.createFile(fs, tmpFile, 10, (short) 2, 0xDEADDEADl); } assertTrue(fs.exists(tablePath)); FileTablespace sm = new FileTablespace("testGetSplitWithBlockStorageLocationsBatching", fs.getUri()); sm.init(new TajoConf(conf)); assertEquals(fs.getUri(), sm.getUri()); Schema schema = new Schema(); schema.addColumn("id", Type.INT4); schema.addColumn("age", Type.INT4); schema.addColumn("name", Type.TEXT); TableMeta meta = CatalogUtil.newTableMeta("TEXT"); List<Fragment> splits = Lists.newArrayList(); splits.addAll(sm.getSplits("data", meta, schema, tablePath)); assertEquals(testCount, splits.size()); assertEquals(2, splits.get(0).getHosts().length); assertEquals(2, ((FileFragment) splits.get(0)).getDiskIds().length); assertNotEquals(-1, ((FileFragment) splits.get(0)).getDiskIds()[0]); fs.close(); } finally { cluster.shutdown(true); } }
From source file:org.apache.tajo.storage.TestStorageManager.java
License:Apache License
@Test public void testGetSplit() throws Exception { final Configuration conf = new HdfsConfiguration(); String testDataPath = TEST_PATH + "/" + UUID.randomUUID().toString(); conf.set(MiniDFSCluster.HDFS_MINIDFS_BASEDIR, testDataPath); conf.setLong(DFSConfigKeys.DFS_NAMENODE_MIN_BLOCK_SIZE_KEY, 0); conf.setBoolean(DFSConfigKeys.DFS_HDFS_BLOCKS_METADATA_ENABLED, false); final MiniDFSCluster cluster = new MiniDFSCluster.Builder(conf).numDataNodes(1).build(); int testCount = 10; Path tablePath = new Path("/testGetSplit"); try {//from w ww .j av a2s .c om DistributedFileSystem fs = cluster.getFileSystem(); // Create test partitions List<Path> partitions = Lists.newArrayList(); for (int i = 0; i < testCount; i++) { Path tmpFile = new Path(tablePath, String.valueOf(i)); DFSTestUtil.createFile(fs, new Path(tmpFile, "tmpfile.dat"), 10, (short) 2, 0xDEADDEADl); partitions.add(tmpFile); } assertTrue(fs.exists(tablePath)); StorageManager sm = StorageManager.getStorageManager(new TajoConf(conf), tablePath); Schema schema = new Schema(); schema.addColumn("id", Type.INT4); schema.addColumn("age", Type.INT4); schema.addColumn("name", Type.TEXT); TableMeta meta = CatalogUtil.newTableMeta(StoreType.CSV); List<FileFragment> splits = Lists.newArrayList(); // Get FileFragments in partition batch splits.addAll(sm.getSplits("data", meta, schema, partitions.toArray(new Path[partitions.size()]))); assertEquals(testCount, splits.size()); // -1 is unknown volumeId assertEquals(-1, splits.get(0).getDiskIds()[0]); splits.clear(); splits.addAll(sm.getSplits("data", meta, schema, partitions.subList(0, partitions.size() / 2).toArray(new Path[partitions.size() / 2]))); assertEquals(testCount / 2, splits.size()); assertEquals(1, splits.get(0).getHosts().length); assertEquals(-1, splits.get(0).getDiskIds()[0]); fs.close(); } finally { cluster.shutdown(); File dir = new File(testDataPath); dir.delete(); } }
From source file:org.apache.tajo.storage.TestStorageManager.java
License:Apache License
@Test public void testGetSplitWithBlockStorageLocationsBatching() throws Exception { final Configuration conf = new HdfsConfiguration(); String testDataPath = TEST_PATH + "/" + UUID.randomUUID().toString(); conf.set(MiniDFSCluster.HDFS_MINIDFS_BASEDIR, testDataPath); conf.setLong(DFSConfigKeys.DFS_NAMENODE_MIN_BLOCK_SIZE_KEY, 0); conf.setBoolean(DFSConfigKeys.DFS_HDFS_BLOCKS_METADATA_ENABLED, true); final MiniDFSCluster cluster = new MiniDFSCluster.Builder(conf).numDataNodes(2).build(); int testCount = 10; Path tablePath = new Path("/testGetSplitWithBlockStorageLocationsBatching"); try {/*w ww . j a v a 2 s . c o m*/ DistributedFileSystem fs = cluster.getFileSystem(); // Create test files for (int i = 0; i < testCount; i++) { Path tmpFile = new Path(tablePath, "tmpfile" + i + ".dat"); DFSTestUtil.createFile(fs, tmpFile, 10, (short) 2, 0xDEADDEADl); } assertTrue(fs.exists(tablePath)); StorageManager sm = StorageManager.getStorageManager(new TajoConf(conf), tablePath); Schema schema = new Schema(); schema.addColumn("id", Type.INT4); schema.addColumn("age", Type.INT4); schema.addColumn("name", Type.TEXT); TableMeta meta = CatalogUtil.newTableMeta(StoreType.CSV); List<FileFragment> splits = Lists.newArrayList(); splits.addAll(sm.getSplits("data", meta, schema, tablePath)); assertEquals(testCount, splits.size()); assertEquals(2, splits.get(0).getHosts().length); assertEquals(2, splits.get(0).getDiskIds().length); assertNotEquals(-1, splits.get(0).getDiskIds()[0]); fs.close(); } finally { cluster.shutdown(); File dir = new File(testDataPath); dir.delete(); } }