org.apache.hadoop.hive.ql.exec.TemporaryHashSinkOperator Maven / Gradle / Ivy
/**
* 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.exec;
import org.apache.hadoop.conf.Configuration;
import org.apache.hadoop.hive.conf.HiveConf;
import org.apache.hadoop.hive.ql.metadata.HiveException;
import org.apache.hadoop.hive.ql.plan.HashTableSinkDesc;
import org.apache.hadoop.hive.ql.plan.MapJoinDesc;
import java.io.IOException;
public class TemporaryHashSinkOperator extends HashTableSinkOperator {
public TemporaryHashSinkOperator(MapJoinDesc desc) {
conf = new HashTableSinkDesc(desc);
// Sanity check the config.
assert conf.getHashtableMemoryUsage() != 0;
if (conf.getHashtableMemoryUsage() == 0) {
LOG.error("Hash table memory usage not set in map join operator; non-staged load may fail");
}
}
@Override
protected void flushToFile() throws IOException, HiveException {
// do nothing
}
}