org.apache.hadoop.hive.ql.io.orc

Class OrcFileFormatProxy

java.lang.Object

org.apache.hadoop.hive.ql.io.orc.OrcFileFormatProxy

All Implemented Interfaces:

FileFormatProxy

public class OrcFileFormatProxy
extends Object
implements FileFormatProxy

File format proxy for ORC.

Constructor Summary

Constructors

Constructor and Description
OrcFileFormatProxy()

Method Summary

Modifier and Type	Method and Description
org.apache.hadoop.hive.metastore.Metastore.SplitInfos	applySargToMetadata(org.apache.hadoop.hive.ql.io.sarg.SearchArgument sarg, ByteBuffer fileMetadata) Applies SARG to file metadata, and produces some result for this file.
ByteBuffer[]	getAddedColumnsToCache()
ByteBuffer[][]	getAddedValuesToCache(List<ByteBuffer> metadata)
ByteBuffer	getMetadataToCache(org.apache.hadoop.fs.FileSystem fs, org.apache.hadoop.fs.Path path, ByteBuffer[] addedVals)

Methods inherited from class java.lang.Object

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

Constructor Detail

OrcFileFormatProxy

public OrcFileFormatProxy()

Method Detail

applySargToMetadata

public org.apache.hadoop.hive.metastore.Metastore.SplitInfos applySargToMetadata(org.apache.hadoop.hive.ql.io.sarg.SearchArgument sarg,
                                                                                 ByteBuffer fileMetadata)
                                                                          throws IOException

Description copied from interface: FileFormatProxy

Applies SARG to file metadata, and produces some result for this file.

Specified by:

applySargToMetadata in interface FileFormatProxy

Parameters:

sarg - SARG

fileMetadata - File metadata from metastore cache.

Returns:

The result to return to client for this file, or null if file is eliminated.

Throws:

IOException

getAddedColumnsToCache

public ByteBuffer[] getAddedColumnsToCache()

Specified by:

getAddedColumnsToCache in interface FileFormatProxy

Returns:

Additional column names to cache in MS for this format.

getAddedValuesToCache

public ByteBuffer[][] getAddedValuesToCache(List<ByteBuffer> metadata)

Specified by:

getAddedValuesToCache in interface FileFormatProxy

Parameters:

metadata - File metadatas.

Returns:

Additional values for columns returned by getAddedColumnsToCache to cache in MS for respective metadatas.

getMetadataToCache

public ByteBuffer getMetadataToCache(org.apache.hadoop.fs.FileSystem fs,
                                     org.apache.hadoop.fs.Path path,
                                     ByteBuffer[] addedVals)
                              throws IOException

Specified by:

getMetadataToCache in interface FileFormatProxy

Parameters:

fs - The filesystem of the file.

path - The file path.

addedVals - Output parameter; additional column values for columns returned by getAddedColumnsToCache to cache in MS.

Returns:

The ORC file metadata for a given file.

Throws:

IOException