org.apache.hadoop.hive.druid.serde

Class DruidGroupByQueryRecordReader

java.lang.Object

org.apache.hadoop.mapreduce.RecordReader<org.apache.hadoop.io.NullWritable,DruidWritable>

org.apache.hadoop.hive.druid.serde.DruidQueryRecordReader<io.druid.query.groupby.GroupByQuery,io.druid.data.input.Row>

org.apache.hadoop.hive.druid.serde.DruidGroupByQueryRecordReader

All Implemented Interfaces:

Closeable, AutoCloseable, org.apache.hadoop.mapred.RecordReader<org.apache.hadoop.io.NullWritable,DruidWritable>

public class DruidGroupByQueryRecordReader
extends DruidQueryRecordReader<io.druid.query.groupby.GroupByQuery,io.druid.data.input.Row>

Record reader for results for Druid GroupByQuery.

Nested Class Summary

Nested classes/interfaces inherited from class org.apache.hadoop.hive.druid.serde.DruidQueryRecordReader

DruidQueryRecordReader.JsonParserIterator<R extends Comparable<R>>

Field Summary

Fields inherited from class org.apache.hadoop.hive.druid.serde.DruidQueryRecordReader

query, queryResultsIterator, resultsType

Constructor Summary

Constructors

Constructor and Description
DruidGroupByQueryRecordReader()

Method Summary

Modifier and Type	Method and Description
org.apache.hadoop.io.NullWritable	getCurrentKey()
DruidWritable	getCurrentValue()
float	getProgress()
protected com.fasterxml.jackson.databind.JavaType	getResultTypeDef()
void	initialize(org.apache.hadoop.mapreduce.InputSplit split, org.apache.hadoop.conf.Configuration conf)
void	initialize(org.apache.hadoop.mapreduce.InputSplit split, org.apache.hadoop.conf.Configuration conf, com.fasterxml.jackson.databind.ObjectMapper mapper, com.fasterxml.jackson.databind.ObjectMapper smileMapper, com.metamx.http.client.HttpClient httpClient)
boolean	next(org.apache.hadoop.io.NullWritable key, DruidWritable value)
boolean	nextKeyValue()

Methods inherited from class org.apache.hadoop.hive.druid.serde.DruidQueryRecordReader

close, createKey, createValue, getPos, initialize

Methods inherited from class java.lang.Object

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

Constructor Detail

DruidGroupByQueryRecordReader

public DruidGroupByQueryRecordReader()

Method Detail

initialize

public void initialize(org.apache.hadoop.mapreduce.InputSplit split,
                       org.apache.hadoop.conf.Configuration conf)
                throws IOException

Overrides:

initialize in class DruidQueryRecordReader<io.druid.query.groupby.GroupByQuery,io.druid.data.input.Row>

Throws:

IOException

initialize

public void initialize(org.apache.hadoop.mapreduce.InputSplit split,
                       org.apache.hadoop.conf.Configuration conf,
                       com.fasterxml.jackson.databind.ObjectMapper mapper,
                       com.fasterxml.jackson.databind.ObjectMapper smileMapper,
                       com.metamx.http.client.HttpClient httpClient)
                throws IOException

Overrides:

initialize in class DruidQueryRecordReader<io.druid.query.groupby.GroupByQuery,io.druid.data.input.Row>

Throws:

IOException

getResultTypeDef

protected com.fasterxml.jackson.databind.JavaType getResultTypeDef()

Specified by:

getResultTypeDef in class DruidQueryRecordReader<io.druid.query.groupby.GroupByQuery,io.druid.data.input.Row>

nextKeyValue

public boolean nextKeyValue()

Specified by:

nextKeyValue in class DruidQueryRecordReader<io.druid.query.groupby.GroupByQuery,io.druid.data.input.Row>

getCurrentKey

public org.apache.hadoop.io.NullWritable getCurrentKey()
                                                throws IOException,
                                                       InterruptedException

Specified by:

getCurrentKey in class DruidQueryRecordReader<io.druid.query.groupby.GroupByQuery,io.druid.data.input.Row>

Throws:

IOException

InterruptedException

getCurrentValue

public DruidWritable getCurrentValue()
                              throws IOException,
                                     InterruptedException

Specified by:

getCurrentValue in class DruidQueryRecordReader<io.druid.query.groupby.GroupByQuery,io.druid.data.input.Row>

Throws:

IOException

InterruptedException

next

public boolean next(org.apache.hadoop.io.NullWritable key,
                    DruidWritable value)

Specified by:

next in interface org.apache.hadoop.mapred.RecordReader<org.apache.hadoop.io.NullWritable,DruidWritable>

Specified by:

next in class DruidQueryRecordReader<io.druid.query.groupby.GroupByQuery,io.druid.data.input.Row>

getProgress

public float getProgress()
                  throws IOException

Specified by:

getProgress in interface org.apache.hadoop.mapred.RecordReader<org.apache.hadoop.io.NullWritable,DruidWritable>

Specified by:

getProgress in class DruidQueryRecordReader<io.druid.query.groupby.GroupByQuery,io.druid.data.input.Row>

Throws:

IOException