org.apache.hadoop.hive.ql.index
Class AggregateIndexHandler

java.lang.Object
  org.apache.hadoop.hive.ql.index.AbstractIndexHandler
      org.apache.hadoop.hive.ql.index.TableBasedIndexHandler
          org.apache.hadoop.hive.ql.index.compact.CompactIndexHandler
              org.apache.hadoop.hive.ql.index.AggregateIndexHandler

All Implemented Interfaces:

org.apache.hadoop.conf.Configurable, HiveIndexHandler

public class AggregateIndexHandler
extends CompactIndexHandler

Index handler for indexes that have aggregate functions on indexed columns.

Constructor Summary

AggregateIndexHandler()

Method Summary

void

analyzeIndexDefinition(org.apache.hadoop.hive.metastore.api.Table baseTable, org.apache.hadoop.hive.metastore.api.Index idx, org.apache.hadoop.hive.metastore.api.Table indexTable) Requests that the handler validate an index definition and fill in additional information about its stored representation.

Methods inherited from class org.apache.hadoop.hive.ql.index.compact.CompactIndexHandler

checkQuerySize, generateIndexQuery, usesIndexTable

Methods inherited from class org.apache.hadoop.hive.ql.index.TableBasedIndexHandler

generateIndexBuildTaskList, getConf, setConf

Methods inherited from class org.apache.hadoop.hive.ql.index.AbstractIndexHandler

generateIndexQuery, getColumnNames

Methods inherited from class java.lang.Object

equals, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Constructor Detail

AggregateIndexHandler

public AggregateIndexHandler()

Method Detail

analyzeIndexDefinition

public void analyzeIndexDefinition(org.apache.hadoop.hive.metastore.api.Table baseTable,
                                   org.apache.hadoop.hive.metastore.api.Index idx,
                                   org.apache.hadoop.hive.metastore.api.Table indexTable)
                            throws HiveException

Description copied from interface: HiveIndexHandler

Requests that the handler validate an index definition and fill in additional information about its stored representation.

Specified by:

analyzeIndexDefinition in interface HiveIndexHandler

Overrides:

analyzeIndexDefinition in class CompactIndexHandler

Parameters:

baseTable - the definition of the table being indexed

idx - the definition of the index being created

indexTable - a partial definition of the index table to be used for storing the index representation, or null if usesIndexTable() returns false; the handler can augment the index's storage descriptor (e.g. with information about input/output format) and/or the index table's definition (typically with additional columns containing the index representation, e.g. pointers into HDFS).

Throws:

HiveException - if the index definition is invalid with respect to either the base table or the supplied index table definition