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, SerDe, 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

configuration, log, partitionProperties, properties, tableProperties

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(...).
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 configuration, Properties tableProperties, Properties partitionProperties) Initialize the SerDe.
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

getColumnComments, getColumnNames, getColumnTypes, getConfiguration, getPartitionColumnComments, getPartitionColumnNames, getPartitionColumnTypes, getSerDeStats, parseColumnComments, parseColumnNames, parseColumnNames, parseColumnTypes, parseColumnTypes, shouldStoreFieldsInMetastore, toString

Methods inherited from class java.lang.Object

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

Methods inherited from interface org.apache.hadoop.hive.serde2.SerDe

handleJobLevelConfiguration

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 configuration,
                       Properties tableProperties,
                       Properties partitionProperties)
                throws SerDeException

Description copied from class: AbstractSerDe

Initialize the SerDe. By default, this will use one set of properties, either the table properties or the partition properties. If a SerDe needs access to both sets, it should override this method. Eventually, once all SerDes have implemented this method, we should convert it to an abstract method.

Overrides:

initialize in class AbstractSerDe

Parameters:

configuration - Hadoop configuration

tableProperties - Table properties

partitionProperties - Partition properties (may be null if table has no partitions)

Throws:

SerDeException - if SerDe fails to initialize

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

Overrides:

serialize in class AbstractSerDe

Throws:

SerDeException

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

Overrides:

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 interface: Deserializer

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

Throws:

SerDeException