org.apache.hadoop.hive.ql.plan.SkewedColumnPositionPair 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.plan;
/**
* This class record 2 types of positions for a skewed column:
* 1. position in table column list
* 2. position in skewed column list
* Position starts from 0.
* For example, create a table with
* create table list_bucketing_static_part (key String, value String)
* partitioned by (ds String, hr String)
* skewed by (value) on ('val_466','val_287','val_82')
* stored as DIRECTORIES
* STORED AS RCFILE;
*
* Skewed column is "value".
* 1. It's position in table column is 1.
* 2. It's position in skewed column list is 0.
*
* This information will be used in {@FileSinkOperator} generateListBucketingDirName
*/
public class SkewedColumnPositionPair {
private int tblColPosition;
private int skewColPosition;
public SkewedColumnPositionPair () {}
public SkewedColumnPositionPair (int tblColPosition, int skewColPosition) {
this.tblColPosition = tblColPosition;
this.skewColPosition = skewColPosition;
}
/**
* @return the tblColPosition
*/
public int getTblColPosition() {
return tblColPosition;
}
/**
* @param tblColPosition the tblColPosition to set
*/
public void setTblColPosition(int tblColPosition) {
this.tblColPosition = tblColPosition;
}
/**
* @return the skewColPosition
*/
public int getSkewColPosition() {
return skewColPosition;
}
/**
* @param skewColPosition the skewColPosition to set
*/
public void setSkewColPosition(int skewColPosition) {
this.skewColPosition = skewColPosition;
}
}