/**
* 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.hive.ql.lockmgr;
import junit.framework.TestCase;
import org.apache.hadoop.hive.conf.HiveConf;
import org.apache.hadoop.hive.ql.lockmgr.HiveLockObject.HiveLockObjectData;
import org.junit.Assert;
public class TestEmbeddedLockManager extends TestCase {
private int counter;
public void testLocking() throws LockException {
HiveConf conf = new HiveConf();
conf.set("hive.lock.numretries", "0");
conf.set("hive.unlock.numretries", "0");
EmbeddedLockManager manager = new EmbeddedLockManager();
manager.setContext(new HiveLockManagerCtx(conf));
String path1 = "database1/table1/x=100";
String path2 = "database1/table1/x=200";
String path3 = "database1/table2";
String path4 = "database2";
HiveLockObject path1sel1 = lockObj(path1, "select");
HiveLock path1sel1Lock = manager.lock(path1sel1, HiveLockMode.SHARED, false);
Assert.assertNotNull(path1sel1Lock);
Assert.assertEquals(1, manager.getLocks(path1sel1, false, false).size());
Assert.assertEquals(1, manager.getLocks(path1sel1, false, true).size());
Assert.assertEquals(1, manager.getLocks(false, true).size());
HiveLockObject path1up1 = lockObj(path1, "update");
Assert.assertNull(manager.lock(path1up1, HiveLockMode.EXCLUSIVE, false));
HiveLockObject path1sel2 = lockObj(path1, "select");
HiveLock path1sel2Lock = manager.lock(path1sel2, HiveLockMode.SHARED, false);
Assert.assertNotNull(path1sel2Lock);
Assert.assertEquals(1, manager.getLocks(path1sel1, false, false).size());
Assert.assertEquals(2, manager.getLocks(path1sel1, false, true).size());
Assert.assertEquals(2, manager.getLocks(path1sel2, false, true).size());
Assert.assertEquals(2, manager.getLocks(false, true).size());
HiveLockObject path1up2 = lockObj(path1, "update");
Assert.assertNull(manager.lock(path1up2, HiveLockMode.EXCLUSIVE, false));
HiveLockObject path2sel1 = lockObj(path2, "select");
HiveLock path2sel1Lock = manager.lock(path2sel1, HiveLockMode.SHARED, false);
Assert.assertNotNull(path2sel1Lock);
Assert.assertEquals(1, manager.getLocks(path1sel1, false, false).size());
Assert.assertEquals(2, manager.getLocks(path1sel1, false, true).size());
Assert.assertEquals(2, manager.getLocks(path1sel2, false, true).size());
Assert.assertEquals(1, manager.getLocks(path2sel1, false, true).size());
Assert.assertEquals(3, manager.getLocks(false, true).size());
HiveLockObject path3sel = lockObj(path3, "select");
HiveLock path3selLock = manager.lock(path3sel, HiveLockMode.SHARED, false);
Assert.assertNotNull(path3selLock);
Assert.assertEquals(1, manager.getLocks(path1sel1, false, false).size());
Assert.assertEquals(2, manager.getLocks(path1sel1, false, true).size());
Assert.assertEquals(2, manager.getLocks(path1sel2, false, true).size());
Assert.assertEquals(1, manager.getLocks(path2sel1, false, true).size());
Assert.assertEquals(1, manager.getLocks(path3sel, false, true).size());
Assert.assertEquals(4, manager.getLocks(false, true).size());
manager.unlock(path1sel1Lock);
Assert.assertEquals(1, manager.getLocks(path1sel1, false, false).size());
Assert.assertEquals(1, manager.getLocks(path1sel1, false, true).size());
Assert.assertEquals(1, manager.getLocks(path1sel2, false, true).size());
Assert.assertEquals(1, manager.getLocks(path2sel1, false, true).size());
Assert.assertEquals(1, manager.getLocks(path3sel, false, true).size());
Assert.assertEquals(3, manager.getLocks(false, true).size());
manager.unlock(path1sel2Lock);
Assert.assertEquals(1, manager.getLocks(path2sel1, false, true).size());
Assert.assertEquals(1, manager.getLocks(path3sel, false, true).size());
Assert.assertEquals(2, manager.getLocks(false, true).size());
manager.unlock(path2sel1Lock);
Assert.assertEquals(1, manager.getLocks(path3sel, false, true).size());
Assert.assertEquals(1, manager.getLocks(false, true).size());
manager.unlock(path3selLock);
Assert.assertEquals(0, manager.getLocks(false, true).size());
HiveLockObject path2up1 = lockObj(path2, "update");
HiveLock path2up1Lock = manager.lock(path2up1, HiveLockMode.EXCLUSIVE, false);
Assert.assertNotNull(path2up1Lock);
Assert.assertEquals(1, manager.getLocks(path2up1, false, true).size());
Assert.assertEquals(1, manager.getLocks(false, true).size());
Assert.assertNull(manager.lock(path2up1, HiveLockMode.EXCLUSIVE, false));
HiveLockObject path1sel3 = lockObj(path1, "select");
HiveLockObject path2sel2 = lockObj(path2, "select");
Assert.assertNotNull(manager.lock(path1sel3, HiveLockMode.SHARED, false));
Assert.assertNull(manager.lock(path2sel2, HiveLockMode.SHARED, false));
Assert.assertEquals(1, manager.getLocks(path2up1, false, true).size());
Assert.assertEquals(1, manager.getLocks(path1sel3, false, true).size());
Assert.assertEquals(2, manager.getLocks(false, true).size());
}
private HiveLockObject lockObj(String path, String query) {
HiveLockObjectData data = new HiveLockObjectData(String.valueOf(++counter), null, null, query);
return new HiveLockObject(path.split("/"), data);
}
}