HDFS-8144. Split TestLazyPersistFiles into multiple tests. (Arpit Agarwal)
This commit is contained in:
Arpit Agarwal
parent
5004e75332
commit
9e8309a1b2
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@ -434,6 +434,8 @@ Release 2.8.0 - UNRELEASED
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HDFS-8117. More accurate verification in SimulatedFSDataset: replace
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DEFAULT_DATABYTE with patterned data. (Zhe Zhang via wang)
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HDFS-8144. Split TestLazyPersistFiles into multiple tests. (Arpit Agarwal)
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OPTIMIZATIONS
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HDFS-8026. Trace FSOutputSummer#writeChecksumChunks rather than
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@ -64,6 +64,7 @@ import static org.junit.Assert.assertThat;
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import static org.junit.Assert.fail;
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public abstract class LazyPersistTestCase {
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static final byte LAZY_PERSIST_POLICY_ID = (byte) 15;
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static {
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DFSTestUtil.setNameNodeLogLevel(Level.ALL);
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@ -48,182 +48,8 @@ import static org.junit.Assert.assertTrue;
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import static org.junit.Assert.fail;
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public class TestLazyPersistFiles extends LazyPersistTestCase {
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private static final byte LAZY_PERSIST_POLICY_ID = (byte) 15;
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private static final int THREADPOOL_SIZE = 10;
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@Test
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public void testPolicyNotSetByDefault() throws IOException {
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startUpCluster(false, -1);
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final String METHOD_NAME = GenericTestUtils.getMethodName();
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Path path = new Path("/" + METHOD_NAME + ".dat");
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makeTestFile(path, 0, false);
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// Stat the file and check that the LAZY_PERSIST policy is not
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// returned back.
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HdfsFileStatus status = client.getFileInfo(path.toString());
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assertThat(status.getStoragePolicy(), not(LAZY_PERSIST_POLICY_ID));
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}
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@Test
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public void testPolicyPropagation() throws IOException {
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startUpCluster(false, -1);
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final String METHOD_NAME = GenericTestUtils.getMethodName();
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Path path = new Path("/" + METHOD_NAME + ".dat");
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makeTestFile(path, 0, true);
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// Stat the file and check that the lazyPersist flag is returned back.
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HdfsFileStatus status = client.getFileInfo(path.toString());
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assertThat(status.getStoragePolicy(), is(LAZY_PERSIST_POLICY_ID));
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}
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@Test
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public void testPolicyPersistenceInEditLog() throws IOException {
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startUpCluster(false, -1);
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final String METHOD_NAME = GenericTestUtils.getMethodName();
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Path path = new Path("/" + METHOD_NAME + ".dat");
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makeTestFile(path, 0, true);
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cluster.restartNameNode(true);
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// Stat the file and check that the lazyPersist flag is returned back.
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HdfsFileStatus status = client.getFileInfo(path.toString());
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assertThat(status.getStoragePolicy(), is(LAZY_PERSIST_POLICY_ID));
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}
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@Test
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public void testPolicyPersistenceInFsImage() throws IOException {
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startUpCluster(false, -1);
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final String METHOD_NAME = GenericTestUtils.getMethodName();
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Path path = new Path("/" + METHOD_NAME + ".dat");
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makeTestFile(path, 0, true);
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// checkpoint
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fs.setSafeMode(HdfsConstants.SafeModeAction.SAFEMODE_ENTER);
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fs.saveNamespace();
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fs.setSafeMode(HdfsConstants.SafeModeAction.SAFEMODE_LEAVE);
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cluster.restartNameNode(true);
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// Stat the file and check that the lazyPersist flag is returned back.
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HdfsFileStatus status = client.getFileInfo(path.toString());
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assertThat(status.getStoragePolicy(), is(LAZY_PERSIST_POLICY_ID));
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}
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@Test
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public void testPlacementOnRamDisk() throws IOException {
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startUpCluster(true, -1);
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final String METHOD_NAME = GenericTestUtils.getMethodName();
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Path path = new Path("/" + METHOD_NAME + ".dat");
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makeTestFile(path, BLOCK_SIZE, true);
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ensureFileReplicasOnStorageType(path, RAM_DISK);
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}
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@Test
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public void testPlacementOnSizeLimitedRamDisk() throws IOException {
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startUpCluster(true, 3);
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final String METHOD_NAME = GenericTestUtils.getMethodName();
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Path path1 = new Path("/" + METHOD_NAME + ".01.dat");
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Path path2 = new Path("/" + METHOD_NAME + ".02.dat");
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makeTestFile(path1, BLOCK_SIZE, true);
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makeTestFile(path2, BLOCK_SIZE, true);
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ensureFileReplicasOnStorageType(path1, RAM_DISK);
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ensureFileReplicasOnStorageType(path2, RAM_DISK);
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}
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/**
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* Client tries to write LAZY_PERSIST to same DN with no RamDisk configured
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* Write should default to disk. No error.
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* @throws IOException
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*/
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@Test
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public void testFallbackToDisk() throws IOException {
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startUpCluster(false, -1);
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final String METHOD_NAME = GenericTestUtils.getMethodName();
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Path path = new Path("/" + METHOD_NAME + ".dat");
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makeTestFile(path, BLOCK_SIZE, true);
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ensureFileReplicasOnStorageType(path, DEFAULT);
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}
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/**
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* File can not fit in RamDisk even with eviction
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* @throws IOException
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*/
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@Test
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public void testFallbackToDiskFull() throws Exception {
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startUpCluster(false, 0);
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final String METHOD_NAME = GenericTestUtils.getMethodName();
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Path path = new Path("/" + METHOD_NAME + ".dat");
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makeTestFile(path, BLOCK_SIZE, true);
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ensureFileReplicasOnStorageType(path, DEFAULT);
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verifyRamDiskJMXMetric("RamDiskBlocksWriteFallback", 1);
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}
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/**
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* File partially fit in RamDisk after eviction.
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* RamDisk can fit 2 blocks. Write a file with 5 blocks.
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* Expect 2 or less blocks are on RamDisk and 3 or more on disk.
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* @throws IOException
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*/
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@Test
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public void testFallbackToDiskPartial()
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throws IOException, InterruptedException {
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startUpCluster(true, 2);
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final String METHOD_NAME = GenericTestUtils.getMethodName();
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Path path = new Path("/" + METHOD_NAME + ".dat");
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makeTestFile(path, BLOCK_SIZE * 5, true);
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// Sleep for a short time to allow the lazy writer thread to do its job
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Thread.sleep(6 * LAZY_WRITER_INTERVAL_SEC * 1000);
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triggerBlockReport();
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int numBlocksOnRamDisk = 0;
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int numBlocksOnDisk = 0;
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long fileLength = client.getFileInfo(path.toString()).getLen();
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LocatedBlocks locatedBlocks =
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client.getLocatedBlocks(path.toString(), 0, fileLength);
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for (LocatedBlock locatedBlock : locatedBlocks.getLocatedBlocks()) {
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if (locatedBlock.getStorageTypes()[0] == RAM_DISK) {
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numBlocksOnRamDisk++;
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} else if (locatedBlock.getStorageTypes()[0] == DEFAULT) {
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numBlocksOnDisk++;
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}
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}
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// Since eviction is asynchronous, depending on the timing of eviction
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// wrt writes, we may get 2 or less blocks on RAM disk.
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assert(numBlocksOnRamDisk <= 2);
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assert(numBlocksOnDisk >= 3);
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}
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/**
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* If the only available storage is RAM_DISK and the LAZY_PERSIST flag is not
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* specified, then block placement should fail.
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*
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* @throws IOException
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*/
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@Test
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public void testRamDiskNotChosenByDefault() throws IOException {
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startUpCluster(true, -1);
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final String METHOD_NAME = GenericTestUtils.getMethodName();
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Path path = new Path("/" + METHOD_NAME + ".dat");
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try {
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makeTestFile(path, BLOCK_SIZE, false);
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fail("Block placement to RAM_DISK should have failed without lazyPersist flag");
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} catch (Throwable t) {
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LOG.info("Got expected exception ", t);
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}
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}
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/**
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* Append to lazy persist file is denied.
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* @throws IOException
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@ -271,7 +97,7 @@ public class TestLazyPersistFiles extends LazyPersistTestCase {
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* 'corrupt' file.
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*/
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@Test
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public void testLazyPersistFilesAreDiscarded()
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public void testCorruptFilesAreDiscarded()
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throws IOException, InterruptedException {
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startUpCluster(true, 2);
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final String METHOD_NAME = GenericTestUtils.getMethodName();
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@ -304,244 +130,6 @@ public class TestLazyPersistFiles extends LazyPersistTestCase {
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is(0L));
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}
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@Test
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public void testLazyPersistBlocksAreSaved()
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throws IOException, InterruptedException {
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startUpCluster(true, -1);
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final String METHOD_NAME = GenericTestUtils.getMethodName();
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Path path = new Path("/" + METHOD_NAME + ".dat");
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// Create a test file
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makeTestFile(path, BLOCK_SIZE * 10, true);
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LocatedBlocks locatedBlocks = ensureFileReplicasOnStorageType(path, RAM_DISK);
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// Sleep for a short time to allow the lazy writer thread to do its job
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Thread.sleep(6 * LAZY_WRITER_INTERVAL_SEC * 1000);
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LOG.info("Verifying copy was saved to lazyPersist/");
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// Make sure that there is a saved copy of the replica on persistent
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// storage.
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ensureLazyPersistBlocksAreSaved(locatedBlocks);
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}
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/**
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* RamDisk eviction after lazy persist to disk.
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* @throws Exception
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*/
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@Test
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public void testRamDiskEviction() throws Exception {
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startUpCluster(true, 1 + EVICTION_LOW_WATERMARK);
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final String METHOD_NAME = GenericTestUtils.getMethodName();
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Path path1 = new Path("/" + METHOD_NAME + ".01.dat");
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Path path2 = new Path("/" + METHOD_NAME + ".02.dat");
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final int SEED = 0xFADED;
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makeRandomTestFile(path1, BLOCK_SIZE, true, SEED);
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ensureFileReplicasOnStorageType(path1, RAM_DISK);
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// Sleep for a short time to allow the lazy writer thread to do its job.
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Thread.sleep(3 * LAZY_WRITER_INTERVAL_SEC * 1000);
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ensureFileReplicasOnStorageType(path1, RAM_DISK);
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// Create another file with a replica on RAM_DISK.
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makeTestFile(path2, BLOCK_SIZE, true);
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Thread.sleep(3 * LAZY_WRITER_INTERVAL_SEC * 1000);
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triggerBlockReport();
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// Ensure the first file was evicted to disk, the second is still on
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// RAM_DISK.
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ensureFileReplicasOnStorageType(path2, RAM_DISK);
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ensureFileReplicasOnStorageType(path1, DEFAULT);
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verifyRamDiskJMXMetric("RamDiskBlocksEvicted", 1);
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verifyRamDiskJMXMetric("RamDiskBlocksEvictedWithoutRead", 1);
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}
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/**
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* RamDisk eviction should not happen on blocks that are not yet
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* persisted on disk.
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* @throws IOException
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* @throws InterruptedException
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*/
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@Test
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public void testRamDiskEvictionBeforePersist()
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throws IOException, InterruptedException {
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startUpCluster(true, 1);
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final String METHOD_NAME = GenericTestUtils.getMethodName();
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Path path1 = new Path("/" + METHOD_NAME + ".01.dat");
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Path path2 = new Path("/" + METHOD_NAME + ".02.dat");
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final int SEED = 0XFADED;
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// Stop lazy writer to ensure block for path1 is not persisted to disk.
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FsDatasetTestUtil.stopLazyWriter(cluster.getDataNodes().get(0));
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makeRandomTestFile(path1, BLOCK_SIZE, true, SEED);
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ensureFileReplicasOnStorageType(path1, RAM_DISK);
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// Create second file with a replica on RAM_DISK.
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makeTestFile(path2, BLOCK_SIZE, true);
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// Eviction should not happen for block of the first file that is not
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// persisted yet.
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ensureFileReplicasOnStorageType(path1, RAM_DISK);
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ensureFileReplicasOnStorageType(path2, DEFAULT);
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assert(fs.exists(path1));
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assert(fs.exists(path2));
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assertTrue(verifyReadRandomFile(path1, BLOCK_SIZE, SEED));
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}
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/**
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* Validates lazy persisted blocks are evicted from RAM_DISK based on LRU.
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* @throws IOException
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* @throws InterruptedException
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*/
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@Test
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public void testRamDiskEvictionIsLru()
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throws Exception {
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final int NUM_PATHS = 5;
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startUpCluster(true, NUM_PATHS + EVICTION_LOW_WATERMARK);
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final String METHOD_NAME = GenericTestUtils.getMethodName();
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Path paths[] = new Path[NUM_PATHS * 2];
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for (int i = 0; i < paths.length; i++) {
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paths[i] = new Path("/" + METHOD_NAME + "." + i +".dat");
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}
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for (int i = 0; i < NUM_PATHS; i++) {
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makeTestFile(paths[i], BLOCK_SIZE, true);
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}
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// Sleep for a short time to allow the lazy writer thread to do its job.
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Thread.sleep(3 * LAZY_WRITER_INTERVAL_SEC * 1000);
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for (int i = 0; i < NUM_PATHS; ++i) {
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ensureFileReplicasOnStorageType(paths[i], RAM_DISK);
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}
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// Open the files for read in a random order.
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ArrayList<Integer> indexes = new ArrayList<Integer>(NUM_PATHS);
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for (int i = 0; i < NUM_PATHS; ++i) {
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indexes.add(i);
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}
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Collections.shuffle(indexes);
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for (int i = 0; i < NUM_PATHS; ++i) {
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LOG.info("Touching file " + paths[indexes.get(i)]);
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DFSTestUtil.readFile(fs, paths[indexes.get(i)]);
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}
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// Create an equal number of new files ensuring that the previous
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// files are evicted in the same order they were read.
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for (int i = 0; i < NUM_PATHS; ++i) {
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makeTestFile(paths[i + NUM_PATHS], BLOCK_SIZE, true);
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triggerBlockReport();
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Thread.sleep(3000);
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ensureFileReplicasOnStorageType(paths[i + NUM_PATHS], RAM_DISK);
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ensureFileReplicasOnStorageType(paths[indexes.get(i)], DEFAULT);
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for (int j = i + 1; j < NUM_PATHS; ++j) {
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ensureFileReplicasOnStorageType(paths[indexes.get(j)], RAM_DISK);
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}
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}
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verifyRamDiskJMXMetric("RamDiskBlocksWrite", NUM_PATHS * 2);
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verifyRamDiskJMXMetric("RamDiskBlocksWriteFallback", 0);
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verifyRamDiskJMXMetric("RamDiskBytesWrite", BLOCK_SIZE * NUM_PATHS * 2);
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verifyRamDiskJMXMetric("RamDiskBlocksReadHits", NUM_PATHS);
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verifyRamDiskJMXMetric("RamDiskBlocksEvicted", NUM_PATHS);
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verifyRamDiskJMXMetric("RamDiskBlocksEvictedWithoutRead", 0);
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verifyRamDiskJMXMetric("RamDiskBlocksDeletedBeforeLazyPersisted", 0);
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}
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/**
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* Delete lazy-persist file that has not been persisted to disk.
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* Memory is freed up and file is gone.
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* @throws IOException
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*/
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@Test
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public void testDeleteBeforePersist()
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throws Exception {
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startUpCluster(true, -1);
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final String METHOD_NAME = GenericTestUtils.getMethodName();
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FsDatasetTestUtil.stopLazyWriter(cluster.getDataNodes().get(0));
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Path path = new Path("/" + METHOD_NAME + ".dat");
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makeTestFile(path, BLOCK_SIZE, true);
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LocatedBlocks locatedBlocks =
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ensureFileReplicasOnStorageType(path, RAM_DISK);
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// Delete before persist
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client.delete(path.toString(), false);
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Assert.assertFalse(fs.exists(path));
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assertThat(verifyDeletedBlocks(locatedBlocks), is(true));
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verifyRamDiskJMXMetric("RamDiskBlocksDeletedBeforeLazyPersisted", 1);
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}
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/**
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* Delete lazy-persist file that has been persisted to disk
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* Both memory blocks and disk blocks are deleted.
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* @throws IOException
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* @throws InterruptedException
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*/
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@Test
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public void testDeleteAfterPersist()
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throws Exception {
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startUpCluster(true, -1);
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final String METHOD_NAME = GenericTestUtils.getMethodName();
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Path path = new Path("/" + METHOD_NAME + ".dat");
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makeTestFile(path, BLOCK_SIZE, true);
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LocatedBlocks locatedBlocks = ensureFileReplicasOnStorageType(path, RAM_DISK);
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// Sleep for a short time to allow the lazy writer thread to do its job
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Thread.sleep(6 * LAZY_WRITER_INTERVAL_SEC * 1000);
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// Delete after persist
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client.delete(path.toString(), false);
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Assert.assertFalse(fs.exists(path));
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assertThat(verifyDeletedBlocks(locatedBlocks), is(true));
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verifyRamDiskJMXMetric("RamDiskBlocksLazyPersisted", 1);
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verifyRamDiskJMXMetric("RamDiskBytesLazyPersisted", BLOCK_SIZE);
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}
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/**
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* RAM_DISK used/free space
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* @throws IOException
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* @throws InterruptedException
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*/
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@Test
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public void testDfsUsageCreateDelete()
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throws IOException, InterruptedException {
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startUpCluster(true, 4);
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final String METHOD_NAME = GenericTestUtils.getMethodName();
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Path path = new Path("/" + METHOD_NAME + ".dat");
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// Get the usage before write BLOCK_SIZE
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long usedBeforeCreate = fs.getUsed();
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makeTestFile(path, BLOCK_SIZE, true);
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long usedAfterCreate = fs.getUsed();
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assertThat(usedAfterCreate, is((long) BLOCK_SIZE));
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// Sleep for a short time to allow the lazy writer thread to do its job
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Thread.sleep(3 * LAZY_WRITER_INTERVAL_SEC * 1000);
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long usedAfterPersist = fs.getUsed();
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assertThat(usedAfterPersist, is((long) BLOCK_SIZE));
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// Delete after persist
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client.delete(path.toString(), false);
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long usedAfterDelete = fs.getUsed();
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assertThat(usedBeforeCreate, is(usedAfterDelete));
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}
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/**
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* Concurrent read from the same node and verify the contents.
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*/
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@ -632,51 +220,6 @@ public class TestLazyPersistFiles extends LazyPersistTestCase {
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assertThat(testFailed.get(), is(false));
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}
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@Test
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public void testDnRestartWithSavedReplicas()
|
||||
throws IOException, InterruptedException {
|
||||
|
||||
startUpCluster(true, -1);
|
||||
final String METHOD_NAME = GenericTestUtils.getMethodName();
|
||||
Path path1 = new Path("/" + METHOD_NAME + ".01.dat");
|
||||
|
||||
makeTestFile(path1, BLOCK_SIZE, true);
|
||||
ensureFileReplicasOnStorageType(path1, RAM_DISK);
|
||||
|
||||
// Sleep for a short time to allow the lazy writer thread to do its job.
|
||||
// However the block replica should not be evicted from RAM_DISK yet.
|
||||
Thread.sleep(3 * LAZY_WRITER_INTERVAL_SEC * 1000);
|
||||
ensureFileReplicasOnStorageType(path1, RAM_DISK);
|
||||
|
||||
LOG.info("Restarting the DataNode");
|
||||
cluster.restartDataNode(0, true);
|
||||
cluster.waitActive();
|
||||
triggerBlockReport();
|
||||
|
||||
// Ensure that the replica is now on persistent storage.
|
||||
ensureFileReplicasOnStorageType(path1, DEFAULT);
|
||||
}
|
||||
|
||||
@Test
|
||||
public void testDnRestartWithUnsavedReplicas()
|
||||
throws IOException, InterruptedException {
|
||||
|
||||
startUpCluster(true, 1);
|
||||
FsDatasetTestUtil.stopLazyWriter(cluster.getDataNodes().get(0));
|
||||
|
||||
final String METHOD_NAME = GenericTestUtils.getMethodName();
|
||||
Path path1 = new Path("/" + METHOD_NAME + ".01.dat");
|
||||
makeTestFile(path1, BLOCK_SIZE, true);
|
||||
ensureFileReplicasOnStorageType(path1, RAM_DISK);
|
||||
|
||||
LOG.info("Restarting the DataNode");
|
||||
cluster.restartDataNode(0, true);
|
||||
cluster.waitActive();
|
||||
|
||||
// Ensure that the replica is still on transient storage.
|
||||
ensureFileReplicasOnStorageType(path1, RAM_DISK);
|
||||
}
|
||||
|
||||
class WriterRunnable implements Runnable {
|
||||
private final int id;
|
||||
private final Path paths[];
|
||||
|
|
|
|||
|
|
@ -0,0 +1,91 @@
|
|||
/**
|
||||
* Licensed to the Apache Software Foundation (ASF) under one
|
||||
* or more contributor license agreements. See the NOTICE file
|
||||
* distributed with this work for additional information
|
||||
* regarding copyright ownership. The ASF licenses this file
|
||||
* to you under the Apache License, Version 2.0 (the
|
||||
* "License"); you may not use this file except in compliance
|
||||
* with the License. You may obtain a copy of the License at
|
||||
*
|
||||
* http://www.apache.org/licenses/LICENSE-2.0
|
||||
*
|
||||
* Unless required by applicable law or agreed to in writing, software
|
||||
* distributed under the License is distributed on an "AS IS" BASIS,
|
||||
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
|
||||
* See the License for the specific language governing permissions and
|
||||
* limitations under the License.
|
||||
*/
|
||||
|
||||
package org.apache.hadoop.hdfs.server.datanode.fsdataset.impl;
|
||||
|
||||
import org.apache.hadoop.fs.Path;
|
||||
import org.apache.hadoop.hdfs.protocol.HdfsConstants;
|
||||
import org.apache.hadoop.hdfs.protocol.HdfsFileStatus;
|
||||
import org.apache.hadoop.test.GenericTestUtils;
|
||||
import org.junit.Test;
|
||||
|
||||
import java.io.IOException;
|
||||
|
||||
import static org.hamcrest.core.Is.is;
|
||||
import static org.hamcrest.core.IsNot.not;
|
||||
import static org.junit.Assert.assertThat;
|
||||
|
||||
|
||||
public class TestLazyPersistPolicy extends LazyPersistTestCase {
|
||||
@Test
|
||||
public void testPolicyNotSetByDefault() throws IOException {
|
||||
startUpCluster(false, -1);
|
||||
final String METHOD_NAME = GenericTestUtils.getMethodName();
|
||||
Path path = new Path("/" + METHOD_NAME + ".dat");
|
||||
|
||||
makeTestFile(path, 0, false);
|
||||
// Stat the file and check that the LAZY_PERSIST policy is not
|
||||
// returned back.
|
||||
HdfsFileStatus status = client.getFileInfo(path.toString());
|
||||
assertThat(status.getStoragePolicy(), not(LAZY_PERSIST_POLICY_ID));
|
||||
}
|
||||
|
||||
@Test
|
||||
public void testPolicyPropagation() throws IOException {
|
||||
startUpCluster(false, -1);
|
||||
final String METHOD_NAME = GenericTestUtils.getMethodName();
|
||||
Path path = new Path("/" + METHOD_NAME + ".dat");
|
||||
|
||||
makeTestFile(path, 0, true);
|
||||
// Stat the file and check that the lazyPersist flag is returned back.
|
||||
HdfsFileStatus status = client.getFileInfo(path.toString());
|
||||
assertThat(status.getStoragePolicy(), is(LAZY_PERSIST_POLICY_ID));
|
||||
}
|
||||
|
||||
@Test
|
||||
public void testPolicyPersistenceInEditLog() throws IOException {
|
||||
startUpCluster(false, -1);
|
||||
final String METHOD_NAME = GenericTestUtils.getMethodName();
|
||||
Path path = new Path("/" + METHOD_NAME + ".dat");
|
||||
|
||||
makeTestFile(path, 0, true);
|
||||
cluster.restartNameNode(true);
|
||||
|
||||
// Stat the file and check that the lazyPersist flag is returned back.
|
||||
HdfsFileStatus status = client.getFileInfo(path.toString());
|
||||
assertThat(status.getStoragePolicy(), is(LAZY_PERSIST_POLICY_ID));
|
||||
}
|
||||
|
||||
@Test
|
||||
public void testPolicyPersistenceInFsImage() throws IOException {
|
||||
startUpCluster(false, -1);
|
||||
final String METHOD_NAME = GenericTestUtils.getMethodName();
|
||||
Path path = new Path("/" + METHOD_NAME + ".dat");
|
||||
|
||||
makeTestFile(path, 0, true);
|
||||
// checkpoint
|
||||
fs.setSafeMode(HdfsConstants.SafeModeAction.SAFEMODE_ENTER);
|
||||
fs.saveNamespace();
|
||||
fs.setSafeMode(HdfsConstants.SafeModeAction.SAFEMODE_LEAVE);
|
||||
cluster.restartNameNode(true);
|
||||
|
||||
// Stat the file and check that the lazyPersist flag is returned back.
|
||||
HdfsFileStatus status = client.getFileInfo(path.toString());
|
||||
assertThat(status.getStoragePolicy(), is(LAZY_PERSIST_POLICY_ID));
|
||||
}
|
||||
}
|
||||
|
|
@ -0,0 +1,148 @@
|
|||
/**
|
||||
* Licensed to the Apache Software Foundation (ASF) under one
|
||||
* or more contributor license agreements. See the NOTICE file
|
||||
* distributed with this work for additional information
|
||||
* regarding copyright ownership. The ASF licenses this file
|
||||
* to you under the Apache License, Version 2.0 (the
|
||||
* "License"); you may not use this file except in compliance
|
||||
* with the License. You may obtain a copy of the License at
|
||||
*
|
||||
* http://www.apache.org/licenses/LICENSE-2.0
|
||||
*
|
||||
* Unless required by applicable law or agreed to in writing, software
|
||||
* distributed under the License is distributed on an "AS IS" BASIS,
|
||||
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
|
||||
* See the License for the specific language governing permissions and
|
||||
* limitations under the License.
|
||||
*/
|
||||
|
||||
package org.apache.hadoop.hdfs.server.datanode.fsdataset.impl;
|
||||
|
||||
import org.apache.hadoop.fs.Path;
|
||||
import org.apache.hadoop.hdfs.protocol.LocatedBlock;
|
||||
import org.apache.hadoop.hdfs.protocol.LocatedBlocks;
|
||||
import org.apache.hadoop.test.GenericTestUtils;
|
||||
import org.junit.Test;
|
||||
|
||||
import java.io.IOException;
|
||||
|
||||
import static org.apache.hadoop.fs.StorageType.DEFAULT;
|
||||
import static org.apache.hadoop.fs.StorageType.RAM_DISK;
|
||||
import static org.junit.Assert.fail;
|
||||
|
||||
public class TestLazyPersistReplicaPlacement extends LazyPersistTestCase {
|
||||
@Test
|
||||
public void testPlacementOnRamDisk() throws IOException {
|
||||
startUpCluster(true, -1);
|
||||
final String METHOD_NAME = GenericTestUtils.getMethodName();
|
||||
Path path = new Path("/" + METHOD_NAME + ".dat");
|
||||
|
||||
makeTestFile(path, BLOCK_SIZE, true);
|
||||
ensureFileReplicasOnStorageType(path, RAM_DISK);
|
||||
}
|
||||
|
||||
@Test
|
||||
public void testPlacementOnSizeLimitedRamDisk() throws IOException {
|
||||
startUpCluster(true, 3);
|
||||
final String METHOD_NAME = GenericTestUtils.getMethodName();
|
||||
Path path1 = new Path("/" + METHOD_NAME + ".01.dat");
|
||||
Path path2 = new Path("/" + METHOD_NAME + ".02.dat");
|
||||
|
||||
makeTestFile(path1, BLOCK_SIZE, true);
|
||||
makeTestFile(path2, BLOCK_SIZE, true);
|
||||
|
||||
ensureFileReplicasOnStorageType(path1, RAM_DISK);
|
||||
ensureFileReplicasOnStorageType(path2, RAM_DISK);
|
||||
}
|
||||
|
||||
/**
|
||||
* Client tries to write LAZY_PERSIST to same DN with no RamDisk configured
|
||||
* Write should default to disk. No error.
|
||||
* @throws IOException
|
||||
*/
|
||||
@Test
|
||||
public void testFallbackToDisk() throws IOException {
|
||||
startUpCluster(false, -1);
|
||||
final String METHOD_NAME = GenericTestUtils.getMethodName();
|
||||
Path path = new Path("/" + METHOD_NAME + ".dat");
|
||||
|
||||
makeTestFile(path, BLOCK_SIZE, true);
|
||||
ensureFileReplicasOnStorageType(path, DEFAULT);
|
||||
}
|
||||
|
||||
/**
|
||||
* File can not fit in RamDisk even with eviction
|
||||
* @throws IOException
|
||||
*/
|
||||
@Test
|
||||
public void testFallbackToDiskFull() throws Exception {
|
||||
startUpCluster(false, 0);
|
||||
final String METHOD_NAME = GenericTestUtils.getMethodName();
|
||||
Path path = new Path("/" + METHOD_NAME + ".dat");
|
||||
|
||||
makeTestFile(path, BLOCK_SIZE, true);
|
||||
ensureFileReplicasOnStorageType(path, DEFAULT);
|
||||
|
||||
verifyRamDiskJMXMetric("RamDiskBlocksWriteFallback", 1);
|
||||
}
|
||||
|
||||
/**
|
||||
* File partially fit in RamDisk after eviction.
|
||||
* RamDisk can fit 2 blocks. Write a file with 5 blocks.
|
||||
* Expect 2 or less blocks are on RamDisk and 3 or more on disk.
|
||||
* @throws IOException
|
||||
*/
|
||||
@Test
|
||||
public void testFallbackToDiskPartial()
|
||||
throws IOException, InterruptedException {
|
||||
startUpCluster(true, 2);
|
||||
final String METHOD_NAME = GenericTestUtils.getMethodName();
|
||||
Path path = new Path("/" + METHOD_NAME + ".dat");
|
||||
|
||||
makeTestFile(path, BLOCK_SIZE * 5, true);
|
||||
|
||||
// Sleep for a short time to allow the lazy writer thread to do its job
|
||||
Thread.sleep(6 * LAZY_WRITER_INTERVAL_SEC * 1000);
|
||||
|
||||
triggerBlockReport();
|
||||
|
||||
int numBlocksOnRamDisk = 0;
|
||||
int numBlocksOnDisk = 0;
|
||||
|
||||
long fileLength = client.getFileInfo(path.toString()).getLen();
|
||||
LocatedBlocks locatedBlocks =
|
||||
client.getLocatedBlocks(path.toString(), 0, fileLength);
|
||||
for (LocatedBlock locatedBlock : locatedBlocks.getLocatedBlocks()) {
|
||||
if (locatedBlock.getStorageTypes()[0] == RAM_DISK) {
|
||||
numBlocksOnRamDisk++;
|
||||
} else if (locatedBlock.getStorageTypes()[0] == DEFAULT) {
|
||||
numBlocksOnDisk++;
|
||||
}
|
||||
}
|
||||
|
||||
// Since eviction is asynchronous, depending on the timing of eviction
|
||||
// wrt writes, we may get 2 or less blocks on RAM disk.
|
||||
assert(numBlocksOnRamDisk <= 2);
|
||||
assert(numBlocksOnDisk >= 3);
|
||||
}
|
||||
|
||||
/**
|
||||
* If the only available storage is RAM_DISK and the LAZY_PERSIST flag is not
|
||||
* specified, then block placement should fail.
|
||||
*
|
||||
* @throws IOException
|
||||
*/
|
||||
@Test
|
||||
public void testRamDiskNotChosenByDefault() throws IOException {
|
||||
startUpCluster(true, -1);
|
||||
final String METHOD_NAME = GenericTestUtils.getMethodName();
|
||||
Path path = new Path("/" + METHOD_NAME + ".dat");
|
||||
|
||||
try {
|
||||
makeTestFile(path, BLOCK_SIZE, false);
|
||||
fail("Block placement to RAM_DISK should have failed without lazyPersist flag");
|
||||
} catch (Throwable t) {
|
||||
LOG.info("Got expected exception ", t);
|
||||
}
|
||||
}
|
||||
}
|
||||
|
|
@ -0,0 +1,75 @@
|
|||
/**
|
||||
* Licensed to the Apache Software Foundation (ASF) under one
|
||||
* or more contributor license agreements. See the NOTICE file
|
||||
* distributed with this work for additional information
|
||||
* regarding copyright ownership. The ASF licenses this file
|
||||
* to you under the Apache License, Version 2.0 (the
|
||||
* "License"); you may not use this file except in compliance
|
||||
* with the License. You may obtain a copy of the License at
|
||||
*
|
||||
* http://www.apache.org/licenses/LICENSE-2.0
|
||||
*
|
||||
* Unless required by applicable law or agreed to in writing, software
|
||||
* distributed under the License is distributed on an "AS IS" BASIS,
|
||||
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
|
||||
* See the License for the specific language governing permissions and
|
||||
* limitations under the License.
|
||||
*/
|
||||
|
||||
package org.apache.hadoop.hdfs.server.datanode.fsdataset.impl;
|
||||
|
||||
import org.apache.hadoop.fs.Path;
|
||||
import org.apache.hadoop.test.GenericTestUtils;
|
||||
import org.junit.Test;
|
||||
|
||||
import java.io.IOException;
|
||||
|
||||
import static org.apache.hadoop.fs.StorageType.DEFAULT;
|
||||
import static org.apache.hadoop.fs.StorageType.RAM_DISK;
|
||||
|
||||
public class TestLazyPersistReplicaRecovery extends LazyPersistTestCase {
|
||||
@Test
|
||||
public void testDnRestartWithSavedReplicas()
|
||||
throws IOException, InterruptedException {
|
||||
|
||||
startUpCluster(true, -1);
|
||||
final String METHOD_NAME = GenericTestUtils.getMethodName();
|
||||
Path path1 = new Path("/" + METHOD_NAME + ".01.dat");
|
||||
|
||||
makeTestFile(path1, BLOCK_SIZE, true);
|
||||
ensureFileReplicasOnStorageType(path1, RAM_DISK);
|
||||
|
||||
// Sleep for a short time to allow the lazy writer thread to do its job.
|
||||
// However the block replica should not be evicted from RAM_DISK yet.
|
||||
Thread.sleep(3 * LAZY_WRITER_INTERVAL_SEC * 1000);
|
||||
ensureFileReplicasOnStorageType(path1, RAM_DISK);
|
||||
|
||||
LOG.info("Restarting the DataNode");
|
||||
cluster.restartDataNode(0, true);
|
||||
cluster.waitActive();
|
||||
triggerBlockReport();
|
||||
|
||||
// Ensure that the replica is now on persistent storage.
|
||||
ensureFileReplicasOnStorageType(path1, DEFAULT);
|
||||
}
|
||||
|
||||
@Test
|
||||
public void testDnRestartWithUnsavedReplicas()
|
||||
throws IOException, InterruptedException {
|
||||
|
||||
startUpCluster(true, 1);
|
||||
FsDatasetTestUtil.stopLazyWriter(cluster.getDataNodes().get(0));
|
||||
|
||||
final String METHOD_NAME = GenericTestUtils.getMethodName();
|
||||
Path path1 = new Path("/" + METHOD_NAME + ".01.dat");
|
||||
makeTestFile(path1, BLOCK_SIZE, true);
|
||||
ensureFileReplicasOnStorageType(path1, RAM_DISK);
|
||||
|
||||
LOG.info("Restarting the DataNode");
|
||||
cluster.restartDataNode(0, true);
|
||||
cluster.waitActive();
|
||||
|
||||
// Ensure that the replica is still on transient storage.
|
||||
ensureFileReplicasOnStorageType(path1, RAM_DISK);
|
||||
}
|
||||
}
|
||||
|
|
@ -0,0 +1,276 @@
|
|||
/**
|
||||
* Licensed to the Apache Software Foundation (ASF) under one
|
||||
* or more contributor license agreements. See the NOTICE file
|
||||
* distributed with this work for additional information
|
||||
* regarding copyright ownership. The ASF licenses this file
|
||||
* to you under the Apache License, Version 2.0 (the
|
||||
* "License"); you may not use this file except in compliance
|
||||
* with the License. You may obtain a copy of the License at
|
||||
*
|
||||
* http://www.apache.org/licenses/LICENSE-2.0
|
||||
*
|
||||
* Unless required by applicable law or agreed to in writing, software
|
||||
* distributed under the License is distributed on an "AS IS" BASIS,
|
||||
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
|
||||
* See the License for the specific language governing permissions and
|
||||
* limitations under the License.
|
||||
*/
|
||||
|
||||
package org.apache.hadoop.hdfs.server.datanode.fsdataset.impl;
|
||||
|
||||
import org.apache.hadoop.fs.Path;
|
||||
import org.apache.hadoop.hdfs.DFSTestUtil;
|
||||
import org.apache.hadoop.hdfs.protocol.LocatedBlocks;
|
||||
import org.apache.hadoop.test.GenericTestUtils;
|
||||
import org.junit.Assert;
|
||||
import org.junit.Test;
|
||||
|
||||
import java.io.IOException;
|
||||
import java.util.ArrayList;
|
||||
import java.util.Collections;
|
||||
|
||||
import static org.apache.hadoop.fs.StorageType.DEFAULT;
|
||||
import static org.apache.hadoop.fs.StorageType.RAM_DISK;
|
||||
import static org.hamcrest.core.Is.is;
|
||||
import static org.junit.Assert.assertThat;
|
||||
import static org.junit.Assert.assertTrue;
|
||||
|
||||
public class TestLazyWriter extends LazyPersistTestCase {
|
||||
@Test
|
||||
public void testLazyPersistBlocksAreSaved()
|
||||
throws IOException, InterruptedException {
|
||||
startUpCluster(true, -1);
|
||||
final String METHOD_NAME = GenericTestUtils.getMethodName();
|
||||
Path path = new Path("/" + METHOD_NAME + ".dat");
|
||||
|
||||
// Create a test file
|
||||
makeTestFile(path, BLOCK_SIZE * 10, true);
|
||||
LocatedBlocks locatedBlocks = ensureFileReplicasOnStorageType(path, RAM_DISK);
|
||||
|
||||
// Sleep for a short time to allow the lazy writer thread to do its job
|
||||
Thread.sleep(6 * LAZY_WRITER_INTERVAL_SEC * 1000);
|
||||
|
||||
LOG.info("Verifying copy was saved to lazyPersist/");
|
||||
|
||||
// Make sure that there is a saved copy of the replica on persistent
|
||||
// storage.
|
||||
ensureLazyPersistBlocksAreSaved(locatedBlocks);
|
||||
}
|
||||
|
||||
/**
|
||||
* RamDisk eviction after lazy persist to disk.
|
||||
* @throws Exception
|
||||
*/
|
||||
@Test
|
||||
public void testRamDiskEviction() throws Exception {
|
||||
startUpCluster(true, 1 + EVICTION_LOW_WATERMARK);
|
||||
final String METHOD_NAME = GenericTestUtils.getMethodName();
|
||||
Path path1 = new Path("/" + METHOD_NAME + ".01.dat");
|
||||
Path path2 = new Path("/" + METHOD_NAME + ".02.dat");
|
||||
|
||||
final int SEED = 0xFADED;
|
||||
makeRandomTestFile(path1, BLOCK_SIZE, true, SEED);
|
||||
ensureFileReplicasOnStorageType(path1, RAM_DISK);
|
||||
|
||||
// Sleep for a short time to allow the lazy writer thread to do its job.
|
||||
Thread.sleep(3 * LAZY_WRITER_INTERVAL_SEC * 1000);
|
||||
ensureFileReplicasOnStorageType(path1, RAM_DISK);
|
||||
|
||||
// Create another file with a replica on RAM_DISK.
|
||||
makeTestFile(path2, BLOCK_SIZE, true);
|
||||
Thread.sleep(3 * LAZY_WRITER_INTERVAL_SEC * 1000);
|
||||
triggerBlockReport();
|
||||
|
||||
// Ensure the first file was evicted to disk, the second is still on
|
||||
// RAM_DISK.
|
||||
ensureFileReplicasOnStorageType(path2, RAM_DISK);
|
||||
ensureFileReplicasOnStorageType(path1, DEFAULT);
|
||||
|
||||
verifyRamDiskJMXMetric("RamDiskBlocksEvicted", 1);
|
||||
verifyRamDiskJMXMetric("RamDiskBlocksEvictedWithoutRead", 1);
|
||||
}
|
||||
|
||||
/**
|
||||
* RamDisk eviction should not happen on blocks that are not yet
|
||||
* persisted on disk.
|
||||
* @throws IOException
|
||||
* @throws InterruptedException
|
||||
*/
|
||||
@Test
|
||||
public void testRamDiskEvictionBeforePersist()
|
||||
throws IOException, InterruptedException {
|
||||
startUpCluster(true, 1);
|
||||
final String METHOD_NAME = GenericTestUtils.getMethodName();
|
||||
Path path1 = new Path("/" + METHOD_NAME + ".01.dat");
|
||||
Path path2 = new Path("/" + METHOD_NAME + ".02.dat");
|
||||
final int SEED = 0XFADED;
|
||||
|
||||
// Stop lazy writer to ensure block for path1 is not persisted to disk.
|
||||
FsDatasetTestUtil.stopLazyWriter(cluster.getDataNodes().get(0));
|
||||
|
||||
makeRandomTestFile(path1, BLOCK_SIZE, true, SEED);
|
||||
ensureFileReplicasOnStorageType(path1, RAM_DISK);
|
||||
|
||||
// Create second file with a replica on RAM_DISK.
|
||||
makeTestFile(path2, BLOCK_SIZE, true);
|
||||
|
||||
// Eviction should not happen for block of the first file that is not
|
||||
// persisted yet.
|
||||
ensureFileReplicasOnStorageType(path1, RAM_DISK);
|
||||
ensureFileReplicasOnStorageType(path2, DEFAULT);
|
||||
|
||||
assert(fs.exists(path1));
|
||||
assert(fs.exists(path2));
|
||||
assertTrue(verifyReadRandomFile(path1, BLOCK_SIZE, SEED));
|
||||
}
|
||||
|
||||
/**
|
||||
* Validates lazy persisted blocks are evicted from RAM_DISK based on LRU.
|
||||
* @throws IOException
|
||||
* @throws InterruptedException
|
||||
*/
|
||||
@Test
|
||||
public void testRamDiskEvictionIsLru()
|
||||
throws Exception {
|
||||
final int NUM_PATHS = 5;
|
||||
startUpCluster(true, NUM_PATHS + EVICTION_LOW_WATERMARK);
|
||||
final String METHOD_NAME = GenericTestUtils.getMethodName();
|
||||
Path paths[] = new Path[NUM_PATHS * 2];
|
||||
|
||||
for (int i = 0; i < paths.length; i++) {
|
||||
paths[i] = new Path("/" + METHOD_NAME + "." + i +".dat");
|
||||
}
|
||||
|
||||
for (int i = 0; i < NUM_PATHS; i++) {
|
||||
makeTestFile(paths[i], BLOCK_SIZE, true);
|
||||
}
|
||||
|
||||
// Sleep for a short time to allow the lazy writer thread to do its job.
|
||||
Thread.sleep(3 * LAZY_WRITER_INTERVAL_SEC * 1000);
|
||||
|
||||
for (int i = 0; i < NUM_PATHS; ++i) {
|
||||
ensureFileReplicasOnStorageType(paths[i], RAM_DISK);
|
||||
}
|
||||
|
||||
// Open the files for read in a random order.
|
||||
ArrayList<Integer> indexes = new ArrayList<Integer>(NUM_PATHS);
|
||||
for (int i = 0; i < NUM_PATHS; ++i) {
|
||||
indexes.add(i);
|
||||
}
|
||||
Collections.shuffle(indexes);
|
||||
|
||||
for (int i = 0; i < NUM_PATHS; ++i) {
|
||||
LOG.info("Touching file " + paths[indexes.get(i)]);
|
||||
DFSTestUtil.readFile(fs, paths[indexes.get(i)]);
|
||||
}
|
||||
|
||||
// Create an equal number of new files ensuring that the previous
|
||||
// files are evicted in the same order they were read.
|
||||
for (int i = 0; i < NUM_PATHS; ++i) {
|
||||
makeTestFile(paths[i + NUM_PATHS], BLOCK_SIZE, true);
|
||||
triggerBlockReport();
|
||||
Thread.sleep(3000);
|
||||
ensureFileReplicasOnStorageType(paths[i + NUM_PATHS], RAM_DISK);
|
||||
ensureFileReplicasOnStorageType(paths[indexes.get(i)], DEFAULT);
|
||||
for (int j = i + 1; j < NUM_PATHS; ++j) {
|
||||
ensureFileReplicasOnStorageType(paths[indexes.get(j)], RAM_DISK);
|
||||
}
|
||||
}
|
||||
|
||||
verifyRamDiskJMXMetric("RamDiskBlocksWrite", NUM_PATHS * 2);
|
||||
verifyRamDiskJMXMetric("RamDiskBlocksWriteFallback", 0);
|
||||
verifyRamDiskJMXMetric("RamDiskBytesWrite", BLOCK_SIZE * NUM_PATHS * 2);
|
||||
verifyRamDiskJMXMetric("RamDiskBlocksReadHits", NUM_PATHS);
|
||||
verifyRamDiskJMXMetric("RamDiskBlocksEvicted", NUM_PATHS);
|
||||
verifyRamDiskJMXMetric("RamDiskBlocksEvictedWithoutRead", 0);
|
||||
verifyRamDiskJMXMetric("RamDiskBlocksDeletedBeforeLazyPersisted", 0);
|
||||
}
|
||||
|
||||
/**
|
||||
* Delete lazy-persist file that has not been persisted to disk.
|
||||
* Memory is freed up and file is gone.
|
||||
* @throws IOException
|
||||
*/
|
||||
@Test
|
||||
public void testDeleteBeforePersist()
|
||||
throws Exception {
|
||||
startUpCluster(true, -1);
|
||||
final String METHOD_NAME = GenericTestUtils.getMethodName();
|
||||
FsDatasetTestUtil.stopLazyWriter(cluster.getDataNodes().get(0));
|
||||
|
||||
Path path = new Path("/" + METHOD_NAME + ".dat");
|
||||
makeTestFile(path, BLOCK_SIZE, true);
|
||||
LocatedBlocks locatedBlocks =
|
||||
ensureFileReplicasOnStorageType(path, RAM_DISK);
|
||||
|
||||
// Delete before persist
|
||||
client.delete(path.toString(), false);
|
||||
Assert.assertFalse(fs.exists(path));
|
||||
|
||||
assertThat(verifyDeletedBlocks(locatedBlocks), is(true));
|
||||
|
||||
verifyRamDiskJMXMetric("RamDiskBlocksDeletedBeforeLazyPersisted", 1);
|
||||
}
|
||||
|
||||
/**
|
||||
* Delete lazy-persist file that has been persisted to disk
|
||||
* Both memory blocks and disk blocks are deleted.
|
||||
* @throws IOException
|
||||
* @throws InterruptedException
|
||||
*/
|
||||
@Test
|
||||
public void testDeleteAfterPersist()
|
||||
throws Exception {
|
||||
startUpCluster(true, -1);
|
||||
final String METHOD_NAME = GenericTestUtils.getMethodName();
|
||||
Path path = new Path("/" + METHOD_NAME + ".dat");
|
||||
|
||||
makeTestFile(path, BLOCK_SIZE, true);
|
||||
LocatedBlocks locatedBlocks = ensureFileReplicasOnStorageType(path, RAM_DISK);
|
||||
|
||||
// Sleep for a short time to allow the lazy writer thread to do its job
|
||||
Thread.sleep(6 * LAZY_WRITER_INTERVAL_SEC * 1000);
|
||||
|
||||
// Delete after persist
|
||||
client.delete(path.toString(), false);
|
||||
Assert.assertFalse(fs.exists(path));
|
||||
|
||||
assertThat(verifyDeletedBlocks(locatedBlocks), is(true));
|
||||
|
||||
verifyRamDiskJMXMetric("RamDiskBlocksLazyPersisted", 1);
|
||||
verifyRamDiskJMXMetric("RamDiskBytesLazyPersisted", BLOCK_SIZE);
|
||||
}
|
||||
|
||||
/**
|
||||
* RAM_DISK used/free space
|
||||
* @throws IOException
|
||||
* @throws InterruptedException
|
||||
*/
|
||||
@Test
|
||||
public void testDfsUsageCreateDelete()
|
||||
throws IOException, InterruptedException {
|
||||
startUpCluster(true, 4);
|
||||
final String METHOD_NAME = GenericTestUtils.getMethodName();
|
||||
Path path = new Path("/" + METHOD_NAME + ".dat");
|
||||
|
||||
// Get the usage before write BLOCK_SIZE
|
||||
long usedBeforeCreate = fs.getUsed();
|
||||
|
||||
makeTestFile(path, BLOCK_SIZE, true);
|
||||
long usedAfterCreate = fs.getUsed();
|
||||
|
||||
assertThat(usedAfterCreate, is((long) BLOCK_SIZE));
|
||||
|
||||
// Sleep for a short time to allow the lazy writer thread to do its job
|
||||
Thread.sleep(3 * LAZY_WRITER_INTERVAL_SEC * 1000);
|
||||
|
||||
long usedAfterPersist = fs.getUsed();
|
||||
assertThat(usedAfterPersist, is((long) BLOCK_SIZE));
|
||||
|
||||
// Delete after persist
|
||||
client.delete(path.toString(), false);
|
||||
long usedAfterDelete = fs.getUsed();
|
||||
|
||||
assertThat(usedBeforeCreate, is(usedAfterDelete));
|
||||
}
|
||||
}
|
||||
Loading…
Reference in New Issue