/**
* 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.util.hbck;
import java.io.IOException;
import org.apache.hadoop.hbase.InterProcessLock.MetadataHandler;
import org.apache.hadoop.hbase.master.TableLockManager;
import org.apache.hadoop.hbase.protobuf.ProtobufUtil;
import org.apache.hadoop.hbase.protobuf.generated.ZooKeeperProtos;
import org.apache.hadoop.hbase.util.Bytes;
import org.apache.hadoop.hbase.util.EnvironmentEdgeManager;
import org.apache.hadoop.hbase.util.HBaseFsck;
import org.apache.hadoop.hbase.util.HBaseFsck.ErrorReporter;
import org.apache.hadoop.hbase.zookeeper.ZooKeeperWatcher;
/**
* Utility to check and fix table locks. Need zookeeper connection.
*/
public class TableLockChecker {
private ZooKeeperWatcher zkWatcher;
private ErrorReporter errorReporter;
long expireTimeout;
public TableLockChecker(ZooKeeperWatcher zkWatcher, ErrorReporter errorReporter) {
this.zkWatcher = zkWatcher;
this.errorReporter = errorReporter;
expireTimeout = zkWatcher.getConfiguration().getLong(
TableLockManager.TABLE_LOCK_EXPIRE_TIMEOUT,
TableLockManager.DEFAULT_TABLE_LOCK_EXPIRE_TIMEOUT_MS);
}
public void checkTableLocks() throws IOException {
TableLockManager tableLockManager
= TableLockManager.createTableLockManager(zkWatcher.getConfiguration(), zkWatcher, null);
final long expireDate = EnvironmentEdgeManager.currentTime() - expireTimeout;
MetadataHandler handler = new MetadataHandler() {
@Override
public void handleMetadata(byte[] ownerMetadata) {
ZooKeeperProtos.TableLock data = TableLockManager.fromBytes(ownerMetadata);
String msg = "Table lock acquire attempt found:";
if (data != null) {
msg = msg +
String.format("[tableName=%s, lockOwner=%s, threadId=%s, " +
"purpose=%s, isShared=%s, createTime=%s]", Bytes.toString(data.getTableName().toByteArray()),
ProtobufUtil.toServerName(data.getLockOwner()), data.getThreadId(),
data.getPurpose(), data.getIsShared(), data.getCreateTime());
}
if (data != null && data.hasCreateTime() && data.getCreateTime() < expireDate) {
errorReporter.reportError(HBaseFsck.ErrorReporter.ERROR_CODE.EXPIRED_TABLE_LOCK, msg);
} else {
errorReporter.print(msg);
}
}
};
tableLockManager.visitAllLocks(handler);
}
public void fixExpiredTableLocks() throws IOException {
TableLockManager tableLockManager
= TableLockManager.createTableLockManager(zkWatcher.getConfiguration(), zkWatcher, null);
tableLockManager.reapAllExpiredLocks();
}
}