org.apache.hadoop.hive.serde2.thrift

Class ThriftJDBCBinarySerDe

java.lang.Object

org.apache.hadoop.hive.serde2.AbstractSerDe

org.apache.hadoop.hive.serde2.thrift.ThriftJDBCBinarySerDe

All Implemented Interfaces:

Deserializer, Serializer

public class ThriftJDBCBinarySerDe
extends AbstractSerDe

This SerDe is used to serialize the final output to thrift-able objects directly in the SerDe. Use this SerDe only for final output resultSets. It is used if HIVE_SERVER2_THRIFT_RESULTSET_SERIALIZE_IN_TASKS is set to true. It buffers rows that come in from FileSink till it reaches max_buffer_size (also configurable) or all rows are finished and FileSink.closeOp() is called.

Field Summary

Fields

Modifier and Type	Field and Description
static org.slf4j.Logger	LOG

Fields inherited from class org.apache.hadoop.hive.serde2.AbstractSerDe

configErrors

Constructor Summary

Constructors

Constructor and Description
ThriftJDBCBinarySerDe()

Method Summary

Modifier and Type	Method and Description
Object	deserialize(org.apache.hadoop.io.Writable blob) Return the bytes from this writable blob.
ObjectInspector	getObjectInspector() Get the object inspector that can be used to navigate through the internal structure of the Object returned from deserialize(...).
SerDeStats	getSerDeStats() Returns statistics collected when serializing
Class<? extends org.apache.hadoop.io.Writable>	getSerializedClass() Returns the Writable class that would be returned by the serialize method.
void	initialize(org.apache.hadoop.conf.Configuration conf, Properties tbl) Initialize the HiveSerializer.
org.apache.hadoop.io.Writable	serialize(Object obj, ObjectInspector objInspector) Write TColumn objects to the underlying stream of TProtocol

Methods inherited from class org.apache.hadoop.hive.serde2.AbstractSerDe

getConfigurationErrors, initialize, shouldStoreFieldsInMetastore

Methods inherited from class java.lang.Object

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

Field Detail

LOG

public static final org.slf4j.Logger LOG

Constructor Detail

ThriftJDBCBinarySerDe

public ThriftJDBCBinarySerDe()

Method Detail

initialize

public void initialize(org.apache.hadoop.conf.Configuration conf,
                       Properties tbl)
                throws SerDeException

Description copied from class: AbstractSerDe

Initialize the HiveSerializer.

Specified by:

initialize in interface Deserializer

Specified by:

initialize in interface Serializer

Specified by:

initialize in class AbstractSerDe

Parameters:

conf - System properties. Can be null in compile time

tbl - table properties

Throws:

SerDeException

getSerializedClass

public Class<? extends org.apache.hadoop.io.Writable> getSerializedClass()

Description copied from class: AbstractSerDe

Returns the Writable class that would be returned by the serialize method. This is used to initialize SequenceFile header.

Specified by:

getSerializedClass in interface Serializer

Specified by:

getSerializedClass in class AbstractSerDe

serialize

public org.apache.hadoop.io.Writable serialize(Object obj,
                                               ObjectInspector objInspector)
                                        throws SerDeException

Write TColumn objects to the underlying stream of TProtocol

Specified by:

serialize in interface Serializer

Specified by:

serialize in class AbstractSerDe

Throws:

SerDeException

getSerDeStats

public SerDeStats getSerDeStats()

Description copied from class: AbstractSerDe

Returns statistics collected when serializing

Specified by:

getSerDeStats in interface Deserializer

Specified by:

getSerDeStats in interface Serializer

Specified by:

getSerDeStats in class AbstractSerDe

deserialize

public Object deserialize(org.apache.hadoop.io.Writable blob)
                   throws SerDeException

Return the bytes from this writable blob. Eventually the client of this method will interpret the byte using the Thrift Protocol

Specified by:

deserialize in interface Deserializer

Specified by:

deserialize in class AbstractSerDe

Parameters:

blob - The Writable object containing a serialized object

Returns:

A Java object representing the contents in the blob.

Throws:

SerDeException

getObjectInspector

public ObjectInspector getObjectInspector()
                                   throws SerDeException

Description copied from class: AbstractSerDe

Get the object inspector that can be used to navigate through the internal structure of the Object returned from deserialize(...).

Specified by:

getObjectInspector in interface Deserializer

Specified by:

getObjectInspector in class AbstractSerDe

Throws:

SerDeException