org.apache.hadoop.hive.ql.io.StatsProvidingRecordWriter Maven / Gradle / Ivy
The newest version!
/**
* 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.io;
import org.apache.hadoop.hive.ql.exec.FileSinkOperator.RecordWriter;
import org.apache.hadoop.hive.serde2.SerDeStats;
/**
* If a file format internally gathers statistics (like ORC) while writing then
* it can expose the statistics through this record writer interface. Writer side
* statistics is useful for updating the metastore with table/partition level
* statistics.
* StatsProvidingRecordWriter.
*
*/
public interface StatsProvidingRecordWriter extends RecordWriter{
/**
* Returns the statistics information
* @return SerDeStats
*/
SerDeStats getStats();
}