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HDFS-12940. Ozone: KSM: TestKeySpaceManager#testExpiredOpenKey fails occasionally. Contributed by Nanda kumar.

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Nanda kumar 2018-01-21 00:40:39 +05:30 committed by Owen O'Malley
parent 1fb1ce107f
commit 4a051ba494
4 changed files with 68 additions and 36 deletions
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6
hadoop-hdfs-project/hadoop-hdfs/src/main/java/org/apache/hadoop/ozone/ksm/KeyManagerImpl.java
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@ -16,6 +16,7 @@
*/
package org.apache.hadoop.ozone.ksm;
import com.google.common.annotations.VisibleForTesting;
import com.google.common.base.Preconditions;
import org.apache.hadoop.ozone.OzoneConsts;
import org.apache.hadoop.hdfs.DFSUtil;
@ -128,6 +129,11 @@ public KeyManagerImpl(ScmBlockLocationProtocol scmBlockClient,
this.ksmId = ksmId;
}
@VisibleForTesting
public BackgroundService getOpenKeyCleanupService() {
return openKeyCleanupService;
}
@Override
public void start() {
keyDeletingService.start();

5
hadoop-hdfs-project/hadoop-hdfs/src/main/java/org/apache/hadoop/ozone/ksm/KeySpaceManager.java
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@ -234,6 +234,11 @@ private static StorageContainerLocationProtocol getScmContainerClient(
return scmContainerClient;
}
@VisibleForTesting
public KeyManager getKeyManager() {
return keyManager;
}
@VisibleForTesting
public ScmInfo getScmInfo() throws IOException {
return scmBlockClient.getScmInfo();

10
hadoop-hdfs-project/hadoop-hdfs/src/main/java/org/apache/hadoop/utils/BackgroundService.java
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@ -55,6 +55,7 @@ public abstract class BackgroundService {
private final long interval;
private final long serviceTimeout;
private final TimeUnit unit;
private final PeriodicalTask service;
public BackgroundService(String serviceName, long interval,
TimeUnit unit, int threadPoolSize, long serviceTimeout) {
@ -70,6 +71,7 @@ public BackgroundService(String serviceName, long interval,
.setNameFormat(serviceName + "#%d")
.build();
exec = Executors.newScheduledThreadPool(threadPoolSize, threadFactory);
service = new PeriodicalTask();
}
protected ExecutorService getExecutorService() {
@ -81,10 +83,14 @@ public int getThreadCount() {
return threadGroup.activeCount();
}
@VisibleForTesting
public void triggerBackgroundTaskForTesting() {
service.run();
}
// start service
public void start() {
exec.scheduleWithFixedDelay(new PeriodicalTask(), 0, interval, unit);
exec.scheduleWithFixedDelay(service, 0, interval, unit);
}
public abstract BackgroundTaskQueue getTasks();
@ -95,7 +101,7 @@ public void start() {
*/
public class PeriodicalTask implements Runnable {
@Override
public void run() {
public synchronized void run() {
LOG.debug("Running background service : {}", serviceName);
BackgroundTaskQueue tasks = getTasks();
if (tasks.isEmpty()) {

83
hadoop-hdfs-project/hadoop-hdfs/src/test/java/org/apache/hadoop/ozone/ksm/TestKeySpaceManager.java
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@ -56,6 +56,7 @@
import org.apache.hadoop.ozone.web.response.ListKeys;
import org.apache.hadoop.ozone.web.response.ListVolumes;
import org.apache.hadoop.util.Time;
import org.apache.hadoop.utils.BackgroundService;
import org.apache.hadoop.utils.MetadataKeyFilters;
import org.apache.hadoop.utils.MetadataStore;
import org.junit.AfterClass;
@ -83,7 +84,6 @@
import java.util.stream.Collectors;
import java.util.stream.Stream;
import static org.apache.hadoop.ozone.OzoneConfigKeys.OZONE_OPEN_KEY_CLEANUP_SERVICE_INTERVAL_SECONDS;
import static org.apache.hadoop.ozone.OzoneConfigKeys.OZONE_OPEN_KEY_EXPIRE_THRESHOLD_SECONDS;
import static org.apache.hadoop.ozone.OzoneConsts.DELETING_KEY_PREFIX;
import static org.apache.hadoop.ozone.ksm.KSMConfigKeys.OZONE_KSM_ADDRESS_KEY;
@ -121,7 +121,6 @@ public static void init() throws Exception {
ksmId = UUID.randomUUID().toString();
conf.set(OzoneConfigKeys.OZONE_HANDLER_TYPE_KEY,
OzoneConsts.OZONE_HANDLER_DISTRIBUTED);
conf.setInt(OZONE_OPEN_KEY_CLEANUP_SERVICE_INTERVAL_SECONDS, 2);
conf.setInt(OZONE_OPEN_KEY_EXPIRE_THRESHOLD_SECONDS, 2);
cluster = new MiniOzoneClassicCluster.Builder(conf)
.setHandlerType(OzoneConsts.OZONE_HANDLER_DISTRIBUTED)
@ -1080,6 +1079,9 @@ public void testGetScmInfo() throws IOException {
@Test
public void testExpiredOpenKey() throws Exception {
BackgroundService openKeyCleanUpService = ((KeyManagerImpl)cluster
.getKeySpaceManager().getKeyManager()).getOpenKeyCleanupService();
String userName = "user" + RandomStringUtils.randomNumeric(5);
String adminName = "admin" + RandomStringUtils.randomNumeric(5);
String volumeName = "volume" + RandomStringUtils.randomNumeric(5);
@ -1098,54 +1100,67 @@ public void testExpiredOpenKey() throws Exception {
// open some keys.
Thread.sleep(1000);
KeyArgs keyArgs1 = new KeyArgs("testKey1", bucketArgs);
KeyArgs keyArgs2 = new KeyArgs("testKey2", bucketArgs);
KeyArgs keyArgs3 = new KeyArgs("testKey3", bucketArgs);
KeyArgs keyArgs4 = new KeyArgs("testKey4", bucketArgs);
List<BlockGroup> openKeys;
try (OutputStream s1 = storageHandler.newKeyWriter(keyArgs1);
OutputStream s2 = storageHandler.newKeyWriter(keyArgs2)) {
storageHandler.newKeyWriter(keyArgs3);
storageHandler.newKeyWriter(keyArgs4);
// now all k1-k4 should be in open state
openKeys = cluster.getKeySpaceManager()
.getMetadataManager().getExpiredOpenKeys();
Assert.assertEquals(0, openKeys.size());
storageHandler.newKeyWriter(keyArgs1);
storageHandler.newKeyWriter(keyArgs2);
storageHandler.newKeyWriter(keyArgs3);
storageHandler.newKeyWriter(keyArgs4);
Thread.sleep(2000);
Set<String> expected = Stream.of(
"testKey1", "testKey2", "testKey3", "testKey4")
.collect(Collectors.toSet());
openKeys = cluster.getKeySpaceManager().getMetadataManager()
.getExpiredOpenKeys();
Assert.assertEquals(4, openKeys.size());
// Now all k1-k4 should be in open state, so ExpiredOpenKeys should not
// contain these values.
openKeys = cluster.getKeySpaceManager()
.getMetadataManager().getExpiredOpenKeys();
Set<String> expected = Stream.of(
"testKey1", "testKey2", "testKey3", "testKey4")
.collect(Collectors.toSet());
openKeys =
cluster.getKeySpaceManager().getMetadataManager().getExpiredOpenKeys();
for (BlockGroup bg : openKeys) {
String[] subs = bg.getGroupID().split("/");
String keyName = subs[subs.length - 1];
Assert.assertTrue(expected.remove(keyName));
}
Assert.assertEquals(0, expected.size());
for (BlockGroup bg : openKeys) {
String[] subs = bg.getGroupID().split("/");
String keyName = subs[subs.length - 1];
Assert.assertFalse(expected.contains(keyName));
}
Thread.sleep(2000);
// Now all k1-k4 should be in ExpiredOpenKeys
openKeys = cluster.getKeySpaceManager()
.getMetadataManager().getExpiredOpenKeys();
for (BlockGroup bg : openKeys) {
String[] subs = bg.getGroupID().split("/");
String keyName = subs[subs.length - 1];
if (expected.contains(keyName)) {
expected.remove(keyName);
}
}
Assert.assertEquals(0, expected.size());
KeyArgs keyArgs5 = new KeyArgs("testKey5", bucketArgs);
storageHandler.newKeyWriter(keyArgs5);
// k1 and k2 are closed, so should be removed from meta data, k3 and k4
// should still be there.
openKeyCleanUpService.triggerBackgroundTaskForTesting();
Thread.sleep(2000);
// now all k1-k4 should have been removed by the clean-up task, only k5
// should be present in ExpiredOpenKeys.
openKeys =
cluster.getKeySpaceManager().getMetadataManager().getExpiredOpenKeys();
Assert.assertEquals(1, openKeys.size());
String[] subs = openKeys.get(0).getGroupID().split("/");
String keyName = subs[subs.length - 1];
Assert.assertEquals("testKey5", keyName);
System.out.println(openKeys);
boolean key5found = false;
Set<String> removed = Stream.of(
"testKey1", "testKey2", "testKey3", "testKey4")
.collect(Collectors.toSet());
for (BlockGroup bg : openKeys) {
String[] subs = bg.getGroupID().split("/");
String keyName = subs[subs.length - 1];
Assert.assertFalse(removed.contains(keyName));
if (keyName.equals("testKey5")) {
key5found = true;
}
}
Assert.assertTrue(key5found);
}
/**