org.rocksdb

Class SstFileMetaData

java.lang.Object

org.rocksdb.SstFileMetaData

Direct Known Subclasses:

LiveFileMetaData

public class SstFileMetaData
extends Object

The metadata that describes a SST file.

Constructor Summary

Constructors

Modifier	Constructor and Description
protected	SstFileMetaData(String fileName, String path, long size, long smallestSeqno, long largestSeqno, byte[] smallestKey, byte[] largestKey, long numReadsSampled, boolean beingCompacted, long numEntries, long numDeletions) Called from JNI C++

Method Summary

Modifier and Type	Method and Description
boolean	beingCompacted() Returns true if the file is currently being compacted.
String	fileName() Get the name of the file.
byte[]	largestKey() Get the largest user defined key in the file.
long	largestSeqno() Get the largest sequence number in file.
long	numDeletions() Get the number of deletions.
long	numEntries() Get the number of entries.
long	numReadsSampled() Get the number of times the file has been read.
String	path() Get the full path where the file locates.
long	size() Get the file size in bytes.
byte[]	smallestKey() Get the smallest user defined key in the file.
long	smallestSeqno() Get the smallest sequence number in file.

Methods inherited from class java.lang.Object

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

Constructor Detail

SstFileMetaData

protected SstFileMetaData(String fileName,
                          String path,
                          long size,
                          long smallestSeqno,
                          long largestSeqno,
                          byte[] smallestKey,
                          byte[] largestKey,
                          long numReadsSampled,
                          boolean beingCompacted,
                          long numEntries,
                          long numDeletions)

Called from JNI C++

Parameters:

fileName - the file name

path - the file path

size - the size of the file

smallestSeqno - the smallest sequence number

largestSeqno - the largest sequence number

smallestKey - the smallest key

largestKey - the largest key

numReadsSampled - the number of reads sampled

beingCompacted - true if the file is being compacted, false otherwise

numEntries - the number of entries

numDeletions - the number of deletions

Method Detail

fileName

public String fileName()

Get the name of the file.

Returns:

the name of the file.

path

public String path()

Get the full path where the file locates.

Returns:

the full path

size

public long size()

Get the file size in bytes.

Returns:

file size

smallestSeqno

public long smallestSeqno()

Get the smallest sequence number in file.

Returns:

the smallest sequence number

largestSeqno

public long largestSeqno()

Get the largest sequence number in file.

Returns:

the largest sequence number

smallestKey

public byte[] smallestKey()

Get the smallest user defined key in the file.

Returns:

the smallest user defined key

largestKey

public byte[] largestKey()

Get the largest user defined key in the file.

Returns:

the largest user defined key

numReadsSampled

public long numReadsSampled()

Get the number of times the file has been read.

Returns:

the number of times the file has been read

beingCompacted

public boolean beingCompacted()

Returns true if the file is currently being compacted.

Returns:

true if the file is currently being compacted, false otherwise.

numEntries

public long numEntries()

Get the number of entries.

Returns:

the number of entries.

numDeletions

public long numDeletions()

Get the number of deletions.

Returns:

the number of deletions.