org.apache.carbondata.presto.impl

Class CarbonTableReader

java.lang.Object

org.apache.carbondata.presto.impl.CarbonTableReader

public class CarbonTableReader
extends Object

CarbonTableReader will be a facade of these utils 1:CarbonMetadata,(logic table) 2:FileFactory, (physic table file) 3:CarbonCommonFactory, (offer some ) 4:DictionaryFactory, (parse dictionary util) Currently, it is mainly used to parse metadata of tables under the configured carbondata-store path and filter the relevant input splits with given query predicates.

Field Summary

Fields

Modifier and Type	Field and Description
CarbonTableConfig	config

Constructor Summary

Constructors

Constructor and Description
CarbonTableReader(CarbonTableConfig config)

Method Summary

Modifier and Type	Method and Description
CarbonTableCacheModel	getCarbonCache(com.facebook.presto.spi.SchemaTableName table, String location, org.apache.hadoop.conf.Configuration config) For presto worker node to initialize the metadata cache of a table.
List<CarbonLocalMultiBlockSplit>	getInputSplits2(CarbonTableCacheModel tableCacheModel, org.apache.carbondata.core.scan.expression.Expression filters, com.facebook.presto.spi.predicate.TupleDomain<com.facebook.presto.hive.HiveColumnHandle> constraints, org.apache.hadoop.conf.Configuration config)
void	setQueryId(String queryId)
org.apache.hadoop.conf.Configuration	updateS3Properties(org.apache.hadoop.conf.Configuration configuration)

Methods inherited from class java.lang.Object

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

Field Detail

config

public CarbonTableConfig config

Constructor Detail

CarbonTableReader

@Inject
public CarbonTableReader(CarbonTableConfig config)

Method Detail

getCarbonCache

public CarbonTableCacheModel getCarbonCache(com.facebook.presto.spi.SchemaTableName table,
                                            String location,
                                            org.apache.hadoop.conf.Configuration config)

For presto worker node to initialize the metadata cache of a table.

Parameters:

table - the name of the table and schema.

Returns:

getInputSplits2

public List<CarbonLocalMultiBlockSplit> getInputSplits2(CarbonTableCacheModel tableCacheModel,
                                                        org.apache.carbondata.core.scan.expression.Expression filters,
                                                        com.facebook.presto.spi.predicate.TupleDomain<com.facebook.presto.hive.HiveColumnHandle> constraints,
                                                        org.apache.hadoop.conf.Configuration config)
                                                 throws IOException

Throws:

IOException

updateS3Properties

public org.apache.hadoop.conf.Configuration updateS3Properties(org.apache.hadoop.conf.Configuration configuration)

setQueryId

public void setQueryId(String queryId)