/**
* 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.assertTrue;
import static org.junit.Assert.fail;
import java.io.IOException;
import org.apache.commons.logging.Log;
import org.apache.commons.logging.LogFactory;
import org.apache.hadoop.conf.Configuration;
import org.apache.hadoop.hbase.HBaseConfiguration;
import org.apache.hadoop.hbase.HConstants;
import org.apache.hadoop.hbase.SmallTests;
import org.apache.hadoop.hbase.TableName;
import org.apache.hadoop.hbase.protobuf.generated.HBaseProtos.SnapshotDescription;
import org.apache.hadoop.hbase.protobuf.generated.MasterProtos.IsSnapshotDoneRequest;
import org.apache.hadoop.hbase.protobuf.generated.MasterProtos.IsSnapshotDoneResponse;
import org.apache.hadoop.hbase.protobuf.generated.MasterProtos.SnapshotRequest;
import org.apache.hadoop.hbase.protobuf.generated.MasterProtos.SnapshotResponse;
import org.junit.Test;
import org.junit.experimental.categories.Category;
import org.mockito.Mockito;
import com.google.protobuf.RpcController;
/**
* Test snapshot logic from the client
*/
@Category(SmallTests.class)
public class TestSnapshotFromAdmin {
private static final Log LOG = LogFactory.getLog(TestSnapshotFromAdmin.class);
/**
* Test that the logic for doing 'correct' back-off based on exponential increase and the max-time
* passed from the server ensures the correct overall waiting for the snapshot to finish.
* @throws Exception
*/
@Test(timeout = 60000)
public void testBackoffLogic() throws Exception {
final int pauseTime = 100;
final int maxWaitTime =
HConstants.RETRY_BACKOFF[HConstants.RETRY_BACKOFF.length - 1] * pauseTime;
final int numRetries = HConstants.RETRY_BACKOFF.length;
// calculate the wait time, if we just do straight backoff (ignoring the expected time from
// master)
long ignoreExpectedTime = 0;
for (int i = 0; i < HConstants.RETRY_BACKOFF.length; i++) {
ignoreExpectedTime += HConstants.RETRY_BACKOFF[i] * pauseTime;
}
// the correct wait time, capping at the maxTime/tries + fudge room
final long time = pauseTime * 3 + ((maxWaitTime / numRetries) * 3) + 300;
assertTrue("Capped snapshot wait time isn't less that the uncapped backoff time "
+ "- further testing won't prove anything.", time < ignoreExpectedTime);
// setup the mocks
ConnectionManager.HConnectionImplementation mockConnection = Mockito
.mock(ConnectionManager.HConnectionImplementation.class);
Configuration conf = HBaseConfiguration.create();
// setup the conf to match the expected properties
conf.setInt(HConstants.HBASE_CLIENT_RETRIES_NUMBER, numRetries);
conf.setLong("hbase.client.pause", pauseTime);
// mock the master admin to our mock
MasterKeepAliveConnection mockMaster = Mockito.mock(MasterKeepAliveConnection.class);
Mockito.when(mockConnection.getConfiguration()).thenReturn(conf);
Mockito.when(mockConnection.getKeepAliveMasterService()).thenReturn(mockMaster);
// set the max wait time for the snapshot to complete
SnapshotResponse response = SnapshotResponse.newBuilder()
.setExpectedTimeout(maxWaitTime)
.build();
Mockito
.when(
mockMaster.snapshot((RpcController) Mockito.isNull(),
Mockito.any(SnapshotRequest.class))).thenReturn(response);
// setup the response
IsSnapshotDoneResponse.Builder builder = IsSnapshotDoneResponse.newBuilder();
builder.setDone(false);
// first five times, we return false, last we get success
Mockito.when(
mockMaster.isSnapshotDone((RpcController) Mockito.isNull(),
Mockito.any(IsSnapshotDoneRequest.class))).thenReturn(builder.build(), builder.build(),
builder.build(), builder.build(), builder.build(), builder.setDone(true).build());
// setup the admin and run the test
Admin admin = new HBaseAdmin(mockConnection);
String snapshot = "snapshot";
TableName table = TableName.valueOf("table");
// get start time
long start = System.currentTimeMillis();
admin.snapshot(snapshot, table);
long finish = System.currentTimeMillis();
long elapsed = (finish - start);
assertTrue("Elapsed time:" + elapsed + " is more than expected max:" + time, elapsed <= time);
admin.close();
}
/**
* Make sure that we validate the snapshot name and the table name before we pass anything across
* the wire
* @throws Exception on failure
*/
@Test
public void testValidateSnapshotName() throws Exception {
ConnectionManager.HConnectionImplementation mockConnection = Mockito
.mock(ConnectionManager.HConnectionImplementation.class);
Configuration conf = HBaseConfiguration.create();
Mockito.when(mockConnection.getConfiguration()).thenReturn(conf);
Admin admin = new HBaseAdmin(mockConnection);
SnapshotDescription.Builder builder = SnapshotDescription.newBuilder();
// check that invalid snapshot names fail
failSnapshotStart(admin, builder.setName(HConstants.SNAPSHOT_DIR_NAME).build());
failSnapshotStart(admin, builder.setName("-snapshot").build());
failSnapshotStart(admin, builder.setName("snapshot fails").build());
failSnapshotStart(admin, builder.setName("snap$hot").build());
failSnapshotStart(admin, builder.setName("snap:hot").build());
// check the table name also get verified
failSnapshotStart(admin, builder.setName("snapshot").setTable(".table").build());
failSnapshotStart(admin, builder.setName("snapshot").setTable("-table").build());
failSnapshotStart(admin, builder.setName("snapshot").setTable("table fails").build());
failSnapshotStart(admin, builder.setName("snapshot").setTable("tab%le").build());
// mock the master connection
MasterKeepAliveConnection master = Mockito.mock(MasterKeepAliveConnection.class);
Mockito.when(mockConnection.getKeepAliveMasterService()).thenReturn(master);
SnapshotResponse response = SnapshotResponse.newBuilder().setExpectedTimeout(0).build();
Mockito.when(
master.snapshot((RpcController) Mockito.isNull(), Mockito.any(SnapshotRequest.class)))
.thenReturn(response);
IsSnapshotDoneResponse doneResponse = IsSnapshotDoneResponse.newBuilder().setDone(true).build();
Mockito.when(
master.isSnapshotDone((RpcController) Mockito.isNull(),
Mockito.any(IsSnapshotDoneRequest.class))).thenReturn(doneResponse);
// make sure that we can use valid names
admin.snapshot(builder.setName("snapshot").setTable("table").build());
}
private void failSnapshotStart(Admin admin, SnapshotDescription snapshot) throws IOException {
try {
admin.snapshot(snapshot);
fail("Snapshot should not have succeed with name:" + snapshot.getName());
} catch (IllegalArgumentException e) {
LOG.debug("Correctly failed to start snapshot:" + e.getMessage());
}
}
}