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

Interface Reader

All Superinterfaces:

AutoCloseable, Closeable, org.apache.orc.Reader

public interface Reader
extends Reader

The interface for reading encoded data from ORC files.

Nested Class Summary

Nested Classes

Modifier and Type	Interface and Description
static class	Reader.OrcEncodedColumnBatch Implementation of EncodedColumnBatch for ORC.
static interface	Reader.PoolFactory The factory that can create (or return) the pools used by encoded reader.

Nested classes/interfaces inherited from interface org.apache.orc.Reader

org.apache.orc.Reader.Options

Method Summary

Modifier and Type	Method and Description
EncodedReader	encodedReader(Object fileKey, DataCache dataCache, LlapDataReader dataReader, Reader.PoolFactory pf, IoTrace trace, boolean useCodecPool, CacheTag tag, boolean isReadCacheOnly) Creates the encoded reader.

Methods inherited from interface org.apache.hadoop.hive.ql.io.orc.Reader

getCompression, getObjectInspector, rows, rows, rows, rows, rowsOptions, rowsOptions

Methods inherited from interface org.apache.orc.Reader

getColumnEncryptionKeys, getCompressionKind, getCompressionSize, getContentLength, getConvertToProlepticGregorian, getDataMasks, getEncryptionVariants, getFileTail, getFileVersion, getMetadataKeys, getMetadataSize, getMetadataValue, getNumberOfRows, getOrcProtoFileStatistics, getOrcProtoStripeStatistics, getRawDataSize, getRawDataSizeFromColIndices, getRawDataSizeOfColumns, getRowIndexStride, getSchema, getSerializedFileFooter, getSoftwareVersion, getStatistics, getStripes, getStripeStatistics, getStripeStatistics, getTypes, getVariantStripeStatistics, getVersionList, getWriterVersion, hasMetadataValue, options, rows, writerUsedProlepticGregorian

Methods inherited from interface java.io.Closeable

close

Method Detail

encodedReader

EncodedReader encodedReader(Object fileKey,
                            DataCache dataCache,
                            LlapDataReader dataReader,
                            Reader.PoolFactory pf,
                            IoTrace trace,
                            boolean useCodecPool,
                            CacheTag tag,
                            boolean isReadCacheOnly)
                     throws IOException

Creates the encoded reader.

Parameters:

fileKey - File ID to read, to use for cache lookups and such.

dataCache - Data cache to use for cache lookups.

dataReader - Data reader to read data not found in cache (from disk, HDFS, and such).

pf - Pool factory to create object pools.

Returns:

The reader.

Throws:

IOException