/*
* 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.phoenix.hbase.index.ipc;
import org.apache.commons.logging.Log;
import org.apache.commons.logging.LogFactory;
import org.apache.hadoop.conf.Configuration;
import org.apache.hadoop.hbase.HConstants;
import org.apache.hadoop.hbase.ipc.PhoenixIndexRpcScheduler;
import org.apache.hadoop.hbase.ipc.RpcScheduler;
import org.apache.hadoop.hbase.regionserver.RegionServerServices;
import org.apache.hadoop.hbase.regionserver.RpcSchedulerFactory;
import org.apache.hadoop.hbase.regionserver.SimpleRpcSchedulerFactory;
import org.apache.phoenix.query.QueryServices;
import org.apache.phoenix.query.QueryServicesOptions;
import com.google.common.base.Preconditions;
/**
* Factory to create a {@link PhoenixIndexRpcScheduler}. In this package so we can access the
* {@link SimpleRpcSchedulerFactory}.
*/
public class PhoenixIndexRpcSchedulerFactory implements RpcSchedulerFactory {
private static final Log LOG = LogFactory.getLog(PhoenixIndexRpcSchedulerFactory.class);
private static final String VERSION_TOO_OLD_FOR_INDEX_RPC =
"Running an older version of HBase (less than 0.98.4), Phoenix index RPC handling cannot be enabled.";
@Override
public RpcScheduler create(Configuration conf, RegionServerServices services) {
// create the delegate scheduler
RpcScheduler delegate;
try {
// happens in <=0.98.4 where the scheduler factory is not visible
delegate = new SimpleRpcSchedulerFactory().create(conf, services);
} catch (IllegalAccessError e) {
LOG.fatal(VERSION_TOO_OLD_FOR_INDEX_RPC);
throw e;
}
try {
// make sure we are on a version that phoenix can support
Class.forName("org.apache.hadoop.hbase.ipc.RpcExecutor");
} catch (ClassNotFoundException e) {
LOG.error(VERSION_TOO_OLD_FOR_INDEX_RPC
+ " Instead, using falling back to Simple RPC scheduling.");
return delegate;
}
int indexHandlerCount = conf.getInt(QueryServices.INDEX_HANDLER_COUNT_ATTRIB, QueryServicesOptions.DEFAULT_INDEX_HANDLER_COUNT);
int minPriority = getMinPriority(conf);
int maxPriority = conf.getInt(QueryServices.MAX_INDEX_PRIOIRTY_ATTRIB, QueryServicesOptions.DEFAULT_INDEX_MAX_PRIORITY);
// make sure the ranges are outside the warning ranges
Preconditions.checkArgument(maxPriority > minPriority, "Max index priority (" + maxPriority
+ ") must be larger than min priority (" + minPriority + ")");
boolean allSmaller =
minPriority < HConstants.REPLICATION_QOS
&& maxPriority < HConstants.REPLICATION_QOS;
boolean allLarger = minPriority > HConstants.HIGH_QOS;
Preconditions.checkArgument(allSmaller || allLarger, "Index priority range (" + minPriority
+ ", " + maxPriority + ") must be outside HBase priority range ("
+ HConstants.REPLICATION_QOS + ", " + HConstants.HIGH_QOS + ")");
LOG.info("Using custom Phoenix Index RPC Handling with " + indexHandlerCount
+ " handlers and priority range [" + minPriority + ", " + maxPriority + ")");
PhoenixIndexRpcScheduler scheduler =
new PhoenixIndexRpcScheduler(indexHandlerCount, conf, delegate, minPriority,
maxPriority);
return scheduler;
}
public static int getMinPriority(Configuration conf) {
return conf.getInt(QueryServices.MIN_INDEX_PRIOIRTY_ATTRIB, QueryServicesOptions.DEFAULT_INDEX_MIN_PRIORITY);
}
}