HBASE-27671 Client should not be able to restore/clone a snapshot aft…

hbase-client/src/main/java/org/apache/hadoop/hbase/snapshot/SnapshotTTLExpiredException.java

@@ -0,0 +1,46 @@
+/*
+ * 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.hbase.snapshot;
+
+import org.apache.hadoop.hbase.client.SnapshotDescription;
+import org.apache.yetus.audience.InterfaceAudience;
+
+/**
+ * Thrown when a snapshot could not be restored/cloned because the ttl for snapshot has already
+ * expired
+ */
+@SuppressWarnings("serial")
+@InterfaceAudience.Public
+public class SnapshotTTLExpiredException extends HBaseSnapshotException {
+  /**
+   * Failure when the ttl for snapshot has already expired.
+   * @param message the full description of the failure
+   */
+  public SnapshotTTLExpiredException(String message) {
+    super(message);
+  }
+
+  /**
+   * Failure when the ttl for snapshot has already expired.
+   * @param snapshotDescription snapshot that was attempted
+   */
+  public SnapshotTTLExpiredException(SnapshotDescription snapshotDescription) {
+    super("TTL for snapshot '" + snapshotDescription.getName() + "' has already expired.",
+      snapshotDescription);
+  }
+}

hbase-server/src/main/java/org/apache/hadoop/hbase/master/cleaner/SnapshotCleanerChore.java

@@ -19,11 +19,11 @@
 
 import java.io.IOException;
 import java.util.List;
-import java.util.concurrent.TimeUnit;
 import org.apache.hadoop.conf.Configuration;
 import org.apache.hadoop.hbase.ScheduledChore;
 import org.apache.hadoop.hbase.Stoppable;
 import org.apache.hadoop.hbase.master.snapshot.SnapshotManager;
+import org.apache.hadoop.hbase.snapshot.SnapshotDescriptionUtils;
 import org.apache.hadoop.hbase.util.EnvironmentEdgeManager;
 import org.apache.yetus.audience.InterfaceAudience;
 import org.slf4j.Logger;
@@ -72,22 +72,14 @@ protected void chore() {
       for (SnapshotProtos.SnapshotDescription snapshotDescription : completedSnapshotsList) {
         long snapshotCreatedTime = snapshotDescription.getCreationTime();
         long snapshotTtl = snapshotDescription.getTtl();
-        /*
-         * Backward compatibility after the patch deployment on HMaster Any snapshot with ttl 0 is
-         * to be considered as snapshot to keep FOREVER Default ttl value specified by
-         * {@HConstants.DEFAULT_SNAPSHOT_TTL}
-         */
+        long currentTime = EnvironmentEdgeManager.currentTime();
         if (
-          snapshotCreatedTime > 0 && snapshotTtl > 0
-            && snapshotTtl < TimeUnit.MILLISECONDS.toSeconds(Long.MAX_VALUE)
+          SnapshotDescriptionUtils.isExpiredSnapshot(snapshotTtl, snapshotCreatedTime, currentTime)
         ) {
-          long currentTime = EnvironmentEdgeManager.currentTime();
-          if ((snapshotCreatedTime + TimeUnit.SECONDS.toMillis(snapshotTtl)) < currentTime) {
-            LOG.info("Event: {} Name: {}, CreatedTime: {}, TTL: {}, currentTime: {}",
-              DELETE_SNAPSHOT_EVENT, snapshotDescription.getName(), snapshotCreatedTime,
-              snapshotTtl, currentTime);
-            deleteExpiredSnapshot(snapshotDescription);
-          }
+          LOG.info("Event: {} Name: {}, CreatedTime: {}, TTL: {}, currentTime: {}",
+            DELETE_SNAPSHOT_EVENT, snapshotDescription.getName(), snapshotCreatedTime, snapshotTtl,
+            currentTime);
+          deleteExpiredSnapshot(snapshotDescription);
         }
       }
     } catch (IOException e) {

hbase-server/src/main/java/org/apache/hadoop/hbase/master/procedure/CloneSnapshotProcedure.java

@@ -49,7 +49,9 @@
 import org.apache.hadoop.hbase.snapshot.RestoreSnapshotHelper;
 import org.apache.hadoop.hbase.snapshot.SnapshotDescriptionUtils;
 import org.apache.hadoop.hbase.snapshot.SnapshotManifest;
+import org.apache.hadoop.hbase.snapshot.SnapshotTTLExpiredException;
 import org.apache.hadoop.hbase.util.CommonFSUtils;
+import org.apache.hadoop.hbase.util.EnvironmentEdgeManager;
 import org.apache.hadoop.hbase.util.FSTableDescriptors;
 import org.apache.hadoop.hbase.util.Pair;
 import org.apache.yetus.audience.InterfaceAudience;
@@ -331,6 +333,14 @@ private void prepareClone(final MasterProcedureEnv env) throws IOException {
     if (env.getMasterServices().getTableDescriptors().exists(tableName)) {
       throw new TableExistsException(tableName);
     }
+
+    // check whether ttl has expired for this snapshot
+    if (
+      SnapshotDescriptionUtils.isExpiredSnapshot(snapshot.getTtl(), snapshot.getCreationTime(),
+        EnvironmentEdgeManager.currentTime())
+    ) {
+      throw new SnapshotTTLExpiredException(ProtobufUtil.createSnapshotDesc(snapshot));
+    }
   }
 
   /**

hbase-server/src/main/java/org/apache/hadoop/hbase/master/procedure/RestoreSnapshotProcedure.java

@@ -49,6 +49,8 @@
 import org.apache.hadoop.hbase.snapshot.RestoreSnapshotHelper;
 import org.apache.hadoop.hbase.snapshot.SnapshotDescriptionUtils;
 import org.apache.hadoop.hbase.snapshot.SnapshotManifest;
+import org.apache.hadoop.hbase.snapshot.SnapshotTTLExpiredException;
+import org.apache.hadoop.hbase.util.EnvironmentEdgeManager;
 import org.apache.hadoop.hbase.util.Pair;
 import org.apache.yetus.audience.InterfaceAudience;
 import org.slf4j.Logger;
@@ -327,6 +329,14 @@ private void prepareRestore(final MasterProcedureEnv env) throws IOException {
       throw new TableNotFoundException(tableName);
     }
 
+    // check whether ttl has expired for this snapshot
+    if (
+      SnapshotDescriptionUtils.isExpiredSnapshot(snapshot.getTtl(), snapshot.getCreationTime(),
+        EnvironmentEdgeManager.currentTime())
+    ) {
+      throw new SnapshotTTLExpiredException(ProtobufUtil.createSnapshotDesc(snapshot));
+    }
+
     // Check whether table is disabled.
     env.getMasterServices().checkTableModifiable(tableName);
 

hbase-server/src/main/java/org/apache/hadoop/hbase/snapshot/SnapshotDescriptionUtils.java

@@ -455,4 +455,18 @@ public ListMultimap<String, UserPermission> run() throws Exception {
     return snapshot.toBuilder()
       .setUsersAndPermissions(ShadedAccessControlUtil.toUserTablePermissions(perms)).build();
   }
+
+  /**
+   * Method to check whether TTL has expired for specified snapshot creation time and snapshot ttl.
+   * NOTE: For backward compatibility (after the patch deployment on HMaster), any snapshot with ttl
+   * 0 is to be considered as snapshot to keep FOREVER. Default ttl value specified by
+   * {@link HConstants#DEFAULT_SNAPSHOT_TTL}
+   * @return true if ttl has expired, or, false, otherwise
+   */
+  public static boolean isExpiredSnapshot(long snapshotTtl, long snapshotCreatedTime,
+    long currentTime) {
+    return snapshotCreatedTime > 0 && snapshotTtl > HConstants.DEFAULT_SNAPSHOT_TTL
+      && snapshotTtl < TimeUnit.MILLISECONDS.toSeconds(Long.MAX_VALUE)
+      && (snapshotCreatedTime + TimeUnit.SECONDS.toMillis(snapshotTtl)) < currentTime;
+  }
 }

hbase-server/src/test/java/org/apache/hadoop/hbase/client/TestSnapshotWithTTLFromClient.java

@@ -0,0 +1,240 @@
+/*
+ * 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.hbase.client;
+
+import static org.junit.Assert.assertEquals;
+import static org.junit.Assert.assertFalse;
+import static org.junit.Assert.assertTrue;
+import static org.junit.Assert.fail;
+
+import java.io.IOException;
+import java.util.HashMap;
+import java.util.List;
+import java.util.Map;
+import org.apache.hadoop.conf.Configuration;
+import org.apache.hadoop.hbase.HBaseClassTestRule;
+import org.apache.hadoop.hbase.HBaseTestingUtility;
+import org.apache.hadoop.hbase.TableName;
+import org.apache.hadoop.hbase.master.snapshot.SnapshotManager;
+import org.apache.hadoop.hbase.snapshot.SnapshotTTLExpiredException;
+import org.apache.hadoop.hbase.snapshot.SnapshotTestingUtils;
+import org.apache.hadoop.hbase.testclassification.ClientTests;
+import org.apache.hadoop.hbase.testclassification.LargeTests;
+import org.apache.hadoop.hbase.util.Bytes;
+import org.apache.hadoop.hbase.util.Threads;
+import org.junit.After;
+import org.junit.AfterClass;
+import org.junit.Before;
+import org.junit.BeforeClass;
+import org.junit.ClassRule;
+import org.junit.Test;
+import org.junit.experimental.categories.Category;
+import org.slf4j.Logger;
+import org.slf4j.LoggerFactory;
+
+/**
+ * Test restore/clone snapshots with TTL from the client
+ */
+@Category({ LargeTests.class, ClientTests.class })
+public class TestSnapshotWithTTLFromClient {
+
+  @ClassRule
+  public static final HBaseClassTestRule CLASS_RULE =
+    HBaseClassTestRule.forClass(TestSnapshotWithTTLFromClient.class);
+
+  private static final Logger LOG = LoggerFactory.getLogger(TestSnapshotWithTTLFromClient.class);
+
+  private static final HBaseTestingUtility UTIL = new HBaseTestingUtility();
+  private static final int NUM_RS = 2;
+  private static final String STRING_TABLE_NAME = "test";
+  private static final byte[] TEST_FAM = Bytes.toBytes("fam");
+  private static final TableName TABLE_NAME = TableName.valueOf(STRING_TABLE_NAME);
+  private static final TableName CLONED_TABLE_NAME = TableName.valueOf("clonedTable");
+  private static final String TTL_KEY = "TTL";
+  private static final int CHORE_INTERVAL_SECS = 30;
+
+  /**
+   * Setup the config for the cluster
+   * @throws Exception on failure
+   */
+  @BeforeClass
+  public static void setupCluster() throws Exception {
+    setupConf(UTIL.getConfiguration());
+    UTIL.startMiniCluster(NUM_RS);
+  }
+
+  protected static void setupConf(Configuration conf) {
+    // Enable snapshot
+    conf.setBoolean(SnapshotManager.HBASE_SNAPSHOT_ENABLED, true);
+
+    // Set this to high value so that cleaner chore is not triggered
+    conf.setInt("hbase.master.cleaner.snapshot.interval", CHORE_INTERVAL_SECS * 60 * 1000);
+  }
+
+  @Before
+  public void setup() throws Exception {
+    createTable();
+  }
+
+  protected void createTable() throws Exception {
+    UTIL.createTable(TABLE_NAME, new byte[][] { TEST_FAM });
+  }
+
+  @After
+  public void tearDown() throws Exception {
+    UTIL.deleteTableIfAny(TABLE_NAME);
+    UTIL.deleteTableIfAny(CLONED_TABLE_NAME);
+    SnapshotTestingUtils.deleteAllSnapshots(UTIL.getAdmin());
+    SnapshotTestingUtils.deleteArchiveDirectory(UTIL);
+  }
+
+  @AfterClass
+  public static void cleanupTest() throws Exception {
+    try {
+      UTIL.shutdownMiniCluster();
+    } catch (Exception e) {
+      LOG.warn("failure shutting down cluster", e);
+    }
+  }
+
+  @Test
+  public void testRestoreSnapshotWithTTLSuccess() throws Exception {
+    String snapshotName = "nonExpiredTTLRestoreSnapshotTest";
+
+    // table should exist
+    assertTrue(UTIL.getAdmin().tableExists(TABLE_NAME));
+
+    // create snapshot fo given table with specified ttl
+    createSnapshotWithTTL(TABLE_NAME, snapshotName, CHORE_INTERVAL_SECS * 2);
+    Admin admin = UTIL.getAdmin();
+
+    // Disable and drop table
+    admin.disableTable(TABLE_NAME);
+    admin.deleteTable(TABLE_NAME);
+    assertFalse(UTIL.getAdmin().tableExists(TABLE_NAME));
+
+    // restore snapshot
+    admin.restoreSnapshot(snapshotName);
+
+    // table should be created
+    assertTrue(UTIL.getAdmin().tableExists(TABLE_NAME));
+  }
+
+  @Test
+  public void testRestoreSnapshotFailsDueToTTLExpired() throws Exception {
+    String snapshotName = "expiredTTLRestoreSnapshotTest";
+
+    // table should exist
+    assertTrue(UTIL.getAdmin().tableExists(TABLE_NAME));
+
+    // create snapshot fo given table with specified ttl
+    createSnapshotWithTTL(TABLE_NAME, snapshotName, 1);
+    Admin admin = UTIL.getAdmin();
+
+    // Disable and drop table
+    admin.disableTable(TABLE_NAME);
+    admin.deleteTable(TABLE_NAME);
+    assertFalse(UTIL.getAdmin().tableExists(TABLE_NAME));
+
+    // Sleep so that TTL may expire
+    Threads.sleep(2000);
+
+    // restore snapshot which has expired
+    try {
+      admin.restoreSnapshot(snapshotName);
+      fail("Restore snapshot succeeded even though TTL has expired.");
+    } catch (SnapshotTTLExpiredException e) {
+      LOG.info("Correctly failed to restore a TTL expired snapshot table:" + e.getMessage());
+    }
+
+    // table should not be created
+    assertFalse(UTIL.getAdmin().tableExists(TABLE_NAME));
+  }
+
+  @Test
+  public void testCloneSnapshotWithTTLSuccess() throws Exception {
+    String snapshotName = "nonExpiredTTLCloneSnapshotTest";
+
+    // table should exist
+    assertTrue(UTIL.getAdmin().tableExists(TABLE_NAME));
+
+    // create snapshot fo given table with specified ttl
+    createSnapshotWithTTL(TABLE_NAME, snapshotName, CHORE_INTERVAL_SECS * 2);
+    Admin admin = UTIL.getAdmin();
+
+    // restore snapshot
+    admin.cloneSnapshot(snapshotName, CLONED_TABLE_NAME);
+
+    // table should be created
+    assertTrue(UTIL.getAdmin().tableExists(CLONED_TABLE_NAME));
+  }
+
+  @Test
+  public void testCloneSnapshotFailsDueToTTLExpired() throws Exception {
+    String snapshotName = "expiredTTLCloneSnapshotTest";
+
+    // table should exist
+    assertTrue(UTIL.getAdmin().tableExists(TABLE_NAME));
+
+    // create snapshot fo given table with specified ttl
+    createSnapshotWithTTL(TABLE_NAME, snapshotName, 1);
+    Admin admin = UTIL.getAdmin();
+
+    assertTrue(UTIL.getAdmin().tableExists(TABLE_NAME));
+
+    // Sleep so that TTL may expire
+    Threads.sleep(2000);
+
+    // clone snapshot which has expired
+    try {
+      admin.cloneSnapshot(snapshotName, CLONED_TABLE_NAME);
+      fail("Clone snapshot succeeded even though TTL has expired.");
+    } catch (SnapshotTTLExpiredException e) {
+      LOG.info("Correctly failed to clone a TTL expired snapshot table:" + e.getMessage());
+    }
+
+    // table should not be created
+    assertFalse(UTIL.getAdmin().tableExists(CLONED_TABLE_NAME));
+  }
+
+  private void createSnapshotWithTTL(TableName tableName, final String snapshotName,
+    final int snapshotTTL) throws IOException {
+    Admin admin = UTIL.getAdmin();
+
+    // make sure we don't fail on listing snapshots
+    SnapshotTestingUtils.assertNoSnapshots(admin);
+
+    // put some stuff in the table
+    Table table = UTIL.getConnection().getTable(tableName);
+    UTIL.loadTable(table, TEST_FAM);
+
+    Map<String, Object> props = new HashMap<>();
+    props.put(TTL_KEY, snapshotTTL);
+
+    // take a snapshot of the table
+    SnapshotTestingUtils.snapshot(UTIL.getAdmin(), snapshotName, tableName, SnapshotType.FLUSH, 3,
+      props);
+    LOG.debug("Snapshot completed.");
+
+    // make sure we have the snapshot with expectd TTL
+    List<SnapshotDescription> snapshots =
+      SnapshotTestingUtils.assertOneSnapshotThatMatches(admin, snapshotName, tableName);
+    assertEquals(1, snapshots.size());
+    assertEquals(snapshotTTL, snapshots.get(0).getTtl());
+  }
+}