Package 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

@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	Description
private static final org.slf4j.Logger	LOG
private static final int	WAIT_TIME_FOR_CACHE_INITIALIZATION

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

Method Summary

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

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

close, getCacheConf, 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, prefetchStarted, readBlock, 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 Details

LOG

private static final org.slf4j.Logger LOG

WAIT_TIME_FOR_CACHE_INITIALIZATION

private static final int WAIT_TIME_FOR_CACHE_INITIALIZATION

See Also:

• Constant Field Values

Constructor Details

HFilePreadReader

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

Throws:

IOException

Method Details

getRegionName

private static String getRegionName(org.apache.hadoop.fs.Path path)

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