aswinshakil commented on code in PR #4244: URL: https://github.com/apache/ozone/pull/4244#discussion_r1129939449
########## hadoop-ozone/ozone-manager/src/test/java/org/apache/hadoop/ozone/om/service/TestSnapshotDeletingService.java: ########## @@ -0,0 +1,301 @@ +/* + * 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.ozone.om.service; + +import org.apache.hadoop.hdds.client.StandaloneReplicationConfig; +import org.apache.hadoop.hdds.conf.OzoneConfiguration; +import org.apache.hadoop.hdds.protocol.proto.HddsProtos; +import org.apache.hadoop.hdds.server.ServerUtils; +import org.apache.hadoop.hdds.utils.db.DBConfigFromFile; +import org.apache.hadoop.ozone.om.KeyManager; +import org.apache.hadoop.ozone.om.OMMetadataManager; +import org.apache.hadoop.ozone.om.OmSnapshot; +import org.apache.hadoop.ozone.om.OmTestManagers; +import org.apache.hadoop.ozone.om.OzoneManager; +import org.apache.hadoop.ozone.om.helpers.BucketLayout; +import org.apache.hadoop.ozone.om.helpers.OmBucketInfo; +import org.apache.hadoop.ozone.om.helpers.OmKeyArgs; +import org.apache.hadoop.ozone.om.helpers.OmVolumeArgs; +import org.apache.hadoop.ozone.om.helpers.OpenKeySession; +import org.apache.hadoop.ozone.om.helpers.RepeatedOmKeyInfo; +import org.apache.hadoop.ozone.om.helpers.SnapshotInfo; +import org.apache.hadoop.ozone.om.protocol.OzoneManagerProtocol; +import org.apache.hadoop.ozone.om.request.OMRequestTestUtils; +import org.apache.hadoop.test.PathUtils; +import org.apache.ozone.test.GenericTestUtils; +import org.apache.ratis.util.ExitUtils; +import org.junit.Rule; +import org.junit.jupiter.api.AfterEach; +import org.junit.jupiter.api.Assertions; +import org.junit.jupiter.api.BeforeAll; +import org.junit.jupiter.api.BeforeEach; +import org.junit.jupiter.api.Test; +import org.junit.rules.TemporaryFolder; + +import java.io.File; +import java.io.IOException; +import java.util.ArrayList; +import java.util.Collections; +import java.util.concurrent.TimeUnit; + +import static org.apache.hadoop.ozone.om.OmSnapshotManager.getSnapshotPrefix; +import static org.apache.hadoop.ozone.OzoneConfigKeys.OZONE_SNAPSHOT_DELETING_SERVICE_INTERVAL; +import static org.apache.hadoop.ozone.OzoneConfigKeys.OZONE_SNAPSHOT_DELETING_SERVICE_TIMEOUT; + +/** + * Test Snapshot Deleting Service. + */ +public class TestSnapshotDeletingService { + @Rule + public TemporaryFolder folder = new TemporaryFolder(); + private OzoneManagerProtocol writeClient; + private OzoneManager om; + + private KeyManager keyManager; + private OMMetadataManager omMetadataManager; + private OzoneConfiguration conf; + private OmTestManagers omTestManagers; + private static final String VOLUME_NAME = "vol1"; + private static final String BUCKET_NAME_ONE = "bucket1"; + private static final String BUCKET_NAME_TWO = "bucket2"; + + + @BeforeAll + public static void setup() { + ExitUtils.disableSystemExit(); + } + + @BeforeEach + public void createConfAndInitValues() throws Exception { + conf = new OzoneConfiguration(); + File testDir = PathUtils.getTestDir(TestSnapshotDeletingService.class); + System.setProperty(DBConfigFromFile.CONFIG_DIR, "/"); + ServerUtils.setOzoneMetaDirPath(conf, testDir.getPath()); + conf.setTimeDuration(OZONE_SNAPSHOT_DELETING_SERVICE_INTERVAL, + 1000, TimeUnit.MILLISECONDS); + conf.setTimeDuration(OZONE_SNAPSHOT_DELETING_SERVICE_TIMEOUT, + 100000, TimeUnit.MILLISECONDS); + conf.setQuietMode(false); + omTestManagers = new OmTestManagers(conf); + keyManager = omTestManagers.getKeyManager(); + omMetadataManager = omTestManagers.getMetadataManager(); + writeClient = omTestManagers.getWriteClient(); + om = omTestManagers.getOzoneManager(); + } + + @AfterEach + public void cleanup() throws Exception { + if (om != null) { + om.stop(); + } + } + + @Test + public void testSnapshotKeySpaceReclaim() throws Exception { + SnapshotDeletingService snapshotDeletingService = (SnapshotDeletingService) + keyManager.getSnapshotDeletingService(); + + // Suspending SnapshotDeletingService + snapshotDeletingService.suspend(); + createSnapshotDataForBucket1(); + snapshotDeletingService.resume(); + + snapshotDeletingService.setSuccessRunCount(0); + + GenericTestUtils.waitFor(() -> + snapshotDeletingService.getSuccessfulRunCount() >= 1, + 1000, 10000); + + OmSnapshot nextSnapshot = (OmSnapshot) om.getOmSnapshotManager() + .checkForSnapshot(VOLUME_NAME, BUCKET_NAME_ONE, + getSnapshotPrefix("bucket1snap3")); + + // Check bucket1key1 added to next non deleted snapshot db. + RepeatedOmKeyInfo omKeyInfo = + nextSnapshot.getMetadataManager() + .getDeletedTable().get("/vol1/bucket1/bucket1key1"); + Assertions.assertNotNull(omKeyInfo); + + // Check bucket1key2 added active db as it can be reclaimed. + RepeatedOmKeyInfo omKeyInfo1 = omMetadataManager + .getDeletedTable().get("/vol1/bucket1/bucket1key2"); + + Assertions.assertNotNull(omKeyInfo1); + + } + + @Test + public void testMultipleSnapshotKeyReclaim() throws Exception { + + SnapshotDeletingService snapshotDeletingService = (SnapshotDeletingService) + keyManager.getSnapshotDeletingService(); + + // Suspending SnapshotDeletingService + snapshotDeletingService.suspend(); + int snapshotCount = createSnapshotDataForBucket1(); + + OmKeyArgs bucket2key1 = createVolumeBucketKey(VOLUME_NAME, BUCKET_NAME_TWO, + BucketLayout.DEFAULT, "bucket2key1"); + + OmKeyArgs bucket2key2 = createKey(VOLUME_NAME, BUCKET_NAME_TWO, + "bucket2key2"); + + createSnapshot(VOLUME_NAME, BUCKET_NAME_TWO, "bucket2snap1", + ++snapshotCount); + + // Both key 1 and key 2 can be reclaimed when Snapshot 1 is deleted. + writeClient.deleteKey(bucket2key1); + writeClient.deleteKey(bucket2key2); + + createSnapshot(VOLUME_NAME, BUCKET_NAME_TWO, "bucket2snap2", + ++snapshotCount); + + String snapshotKey2 = "/vol1/bucket2/bucket2snap1"; + SnapshotInfo snapshotInfo = om.getMetadataManager() + .getSnapshotInfoTable().get(snapshotKey2); + + snapshotInfo + .setSnapshotStatus(SnapshotInfo.SnapshotStatus.SNAPSHOT_DELETED); + om.getMetadataManager() + .getSnapshotInfoTable().put(snapshotKey2, snapshotInfo); + snapshotInfo = om.getMetadataManager() + .getSnapshotInfoTable().get(snapshotKey2); + Assertions.assertEquals(snapshotInfo.getSnapshotStatus(), + SnapshotInfo.SnapshotStatus.SNAPSHOT_DELETED); + + snapshotDeletingService.resume(); + + snapshotDeletingService.setSuccessRunCount(0L); + GenericTestUtils.waitFor(() -> + snapshotDeletingService.getSuccessfulRunCount() >= 1, + 1000, 10000); + + // Check bucket2key1 added active db as it can be reclaimed. + RepeatedOmKeyInfo omKeyInfo1 = omMetadataManager + .getDeletedTable().get("/vol1/bucket2/bucket2key1"); + + // Check bucket2key2 added active db as it can be reclaimed. + RepeatedOmKeyInfo omKeyInfo2 = omMetadataManager + .getDeletedTable().get("/vol1/bucket2/bucket2key2"); + + Assertions.assertNotNull(omKeyInfo1); + Assertions.assertNotNull(omKeyInfo2); + } + + private OmKeyArgs createVolumeBucketKey(String volumeName, String bucketName, + BucketLayout bucketLayout, String keyName) throws IOException { + // cheat here, just create a volume and bucket entry so that we can + // create the keys, we put the same data for key and value since the + // system does not decode the object + OMRequestTestUtils.addVolumeToOM(omMetadataManager, + OmVolumeArgs.newBuilder() + .setOwnerName("owner") + .setAdminName("admin") + .setVolume(volumeName) + .build()); + + OMRequestTestUtils.addBucketToOM(omMetadataManager, + OmBucketInfo.newBuilder().setVolumeName(volumeName) + .setBucketName(bucketName) + .setBucketLayout(bucketLayout) + .build()); + + return createKey(volumeName, bucketName, keyName); + } + + + private int createSnapshotDataForBucket1() throws Exception { + int snapshotCount = 0; + OmKeyArgs bucket1key1 = createVolumeBucketKey(VOLUME_NAME, BUCKET_NAME_ONE, + BucketLayout.DEFAULT, "bucket1key1"); + + createSnapshot(VOLUME_NAME, BUCKET_NAME_ONE, "bucket1snap1", + ++snapshotCount); + + OmKeyArgs bucket1key2 = createKey(VOLUME_NAME, BUCKET_NAME_ONE, + "bucket1key2"); + + // Key 1 cannot be reclaimed as it is still referenced by Snapshot 1. + writeClient.deleteKey(bucket1key1); + // Key 2 is deleted here, which means we can reclaim + // it when snapshot 2 is deleted. + writeClient.deleteKey(bucket1key2); + + createSnapshot(VOLUME_NAME, BUCKET_NAME_ONE, "bucket1snap2", + ++snapshotCount); + createKey(VOLUME_NAME, BUCKET_NAME_ONE, "bucket1key4"); + OmKeyArgs bucket1key5 = createKey(VOLUME_NAME, BUCKET_NAME_ONE, + "bucket1key5"); + writeClient.deleteKey(bucket1key5); + + createSnapshot(VOLUME_NAME, BUCKET_NAME_ONE, "bucket1snap3", + ++snapshotCount); + + String snapshotKey2 = "/vol1/bucket1/bucket1snap2"; + SnapshotInfo snapshotInfo = om.getMetadataManager() + .getSnapshotInfoTable().get(snapshotKey2); + + snapshotInfo + .setSnapshotStatus(SnapshotInfo.SnapshotStatus.SNAPSHOT_DELETED); + om.getMetadataManager() + .getSnapshotInfoTable().put(snapshotKey2, snapshotInfo); + snapshotInfo = om.getMetadataManager() + .getSnapshotInfoTable().get(snapshotKey2); + Assertions.assertEquals(snapshotInfo.getSnapshotStatus(), + SnapshotInfo.SnapshotStatus.SNAPSHOT_DELETED); + return snapshotCount; + } + + private OmKeyArgs createKey(String volumeName, String bucketName, + String keyName) throws IOException { + OmKeyArgs keyArg = + new OmKeyArgs.Builder() + .setVolumeName(volumeName) + .setBucketName(bucketName) + .setKeyName(keyName) + .setAcls(Collections.emptyList()) + .setReplicationConfig(StandaloneReplicationConfig.getInstance( + HddsProtos.ReplicationFactor.ONE)) + .setLocationInfoList(new ArrayList<>()) + .build(); + + // Open and write the key. + OpenKeySession session = writeClient.openKey(keyArg); + writeClient.commitKey(keyArg, session.getId()); + + return keyArg; + } + + private void createSnapshot(String volName, String bucketName, + String snapName, int count) throws Exception { + writeClient.createSnapshot(volName, bucketName, snapName); + + GenericTestUtils.waitFor(() -> { + try { + return omMetadataManager.getSnapshotInfoTable() + .getEstimatedKeyCount() >= count; Review Comment: Since the test is small it shouldn't be an issue here. From the multiple test runs, I see it is fairly accurate for at least a small number of keys. But yes we can change this. I'll update the PR. Thanks for pointing. -- This is an automated message from the Apache Git Service. To respond to the message, please log on to GitHub and use the URL above to go to the specific comment. To unsubscribe, e-mail: [email protected] For queries about this service, please contact Infrastructure at: [email protected] --------------------------------------------------------------------- To unsubscribe, e-mail: [email protected] For additional commands, e-mail: [email protected]
