org.apache.hadoop.hbase.io.hfile

Class HFilePreadReader

java.lang.Object

org.apache.hadoop.hbase.io.hfile.HFileReaderImpl

org.apache.hadoop.hbase.io.hfile.HFilePreadReader

All Implemented Interfaces:

Closeable, AutoCloseable, org.apache.hadoop.conf.Configurable, HFile.CachingBlockReader, HFile.Reader

@InterfaceAudience.Private
public class HFilePreadReader
extends HFileReaderImpl

Implementation of HFile.Reader to deal with pread.

Nested Class Summary

Nested classes/interfaces inherited from class org.apache.hadoop.hbase.io.hfile.HFileReaderImpl

HFileReaderImpl.BlockIndexNotLoadedException, HFileReaderImpl.EncodedScanner, HFileReaderImpl.HFileScannerImpl, HFileReaderImpl.NotSeekedException

Field Summary

Fields

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

Fields inherited from class org.apache.hadoop.hbase.io.hfile.HFileReaderImpl

cacheConf, context, dataBlockEncoder, dataBlockIndexReader, fileInfo, fsBlockReader, hfileContext, KEY_VALUE_LEN_SIZE, MAX_MINOR_VERSION, metaBlockIndexReader, MIN_MINOR_VERSION, MINOR_VERSION_NO_CHECKSUM, MINOR_VERSION_WITH_CHECKSUM, MINOR_VERSION_WITH_FAKED_KEY, name, path, PBUF_TRAILER_MINOR_VERSION, trailer

Constructor Summary

Constructors

Constructor and Description
HFilePreadReader(ReaderContext context, HFileInfo fileInfo, CacheConfig cacheConf, org.apache.hadoop.conf.Configuration conf)

Method Summary

Modifier and Type	Method and Description
void	close(boolean evictOnClose) Close method with optional evictOnClose
private static String	getPathOffsetEndStr(org.apache.hadoop.fs.Path path, long offset, long end)

Methods inherited from class org.apache.hadoop.hbase.io.hfile.HFileReaderImpl

close, getComparator, getCompressionAlgorithm, getConf, getContext, getDataBlockEncoding, getDataBlockIndexReader, getDeleteBloomFilterMetadata, getEffectiveEncodingInCache, getEntries, getFileContext, getFirstKey, getFirstRowKey, getGeneralBloomFilterMetadata, getHFileInfo, getLastKey, getLastRowKey, getMajorVersion, getMetaBlock, getMetaBlockIndexReader, getName, getPath, getScanner, getScanner, getTrailer, getUncachedBlockReader, hasMVCCInfo, indexSize, isFileInfoLoaded, isPrimaryReplicaReader, length, midKey, prefetchComplete, readBlock, setConf, setDataBlockEncoder, setDataBlockIndexReader, setMetaBlockIndexReader, toString, unbufferStream

Methods inherited from class java.lang.Object

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

Field Detail

LOG

private static final org.slf4j.Logger LOG

Constructor Detail

HFilePreadReader

public HFilePreadReader(ReaderContext context,
                        HFileInfo fileInfo,
                        CacheConfig cacheConf,
                        org.apache.hadoop.conf.Configuration conf)
                 throws IOException

Throws:

IOException

Method Detail

getPathOffsetEndStr

private static String getPathOffsetEndStr(org.apache.hadoop.fs.Path path,
                                          long offset,
                                          long end)

close

public void close(boolean evictOnClose)
           throws IOException

Description copied from interface: HFile.Reader

Close method with optional evictOnClose

Throws:

IOException