org.apache.hadoop.hive.ql.processors.ReloadProcessor Maven / Gradle / Ivy
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/**
* 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.processors;
import java.io.IOException;
import org.apache.commons.logging.Log;
import org.apache.commons.logging.LogFactory;
import org.apache.hadoop.hive.ql.CommandNeedRetryException;
import org.apache.hadoop.hive.ql.session.SessionState;
/**
* used for reload auxiliary and jars without restarting hive server2
*/
public class ReloadProcessor implements CommandProcessor{
private static final Log LOG = LogFactory.getLog(ReloadProcessor.class);
@Override
public void init() {
}
@Override
public CommandProcessorResponse run(String command) throws CommandNeedRetryException {
SessionState ss = SessionState.get();
try {
ss.reloadAuxJars();
} catch (IOException e) {
LOG.error("fail to reload auxiliary jar files", e);
return CommandProcessorResponse.create(e);
}
return new CommandProcessorResponse(0);
}
}