org.apache.hadoop.hive.accumulo

Interface AccumuloIndexScanner

All Known Implementing Classes:

AccumuloDefaultIndexScanner

public interface AccumuloIndexScanner

Specification for implementing a AccumuloIndexScanner.

Method Summary

Modifier and Type	Method and Description
List<org.apache.accumulo.core.data.Range>	getIndexRowRanges(String column, org.apache.accumulo.core.data.Range indexRange) Get a list of rowid ranges by scanning a column index.
void	init(org.apache.hadoop.conf.Configuration conf) Initialize the index scanner implementation with the runtime configuration.
boolean	isIndexed(String columnName) Check if column is defined as being indexed.

Method Detail

init

void init(org.apache.hadoop.conf.Configuration conf)

Initialize the index scanner implementation with the runtime configuration.

Parameters:

conf - - the hadoop configuration

isIndexed

boolean isIndexed(String columnName)

Check if column is defined as being indexed.

Parameters:

columnName - - the hive column name

Returns:

true if the column is indexed

getIndexRowRanges

List<org.apache.accumulo.core.data.Range> getIndexRowRanges(String column,
                                                            org.apache.accumulo.core.data.Range indexRange)

Get a list of rowid ranges by scanning a column index.

Parameters:

column - - the hive column name

indexRange - - Key range to scan on the index table

Returns:

List of matching rowid ranges or null if too many matches found