org.rocksdb

Class Checkpoint

java.lang.Object

org.rocksdb.RocksObject

org.rocksdb.Checkpoint

public class Checkpoint
extends RocksObject

Provides Checkpoint functionality. Checkpoints provide persistent snapshots of RocksDB databases.

Field Summary

Fields inherited from class org.rocksdb.RocksObject

nativeHandle_

Method Summary

Methods

Modifier and Type	Method and Description
static Checkpoint	create(RocksDB db) Creates a Checkpoint object to be used for creating open-able snapshots.
void	createCheckpoint(java.lang.String checkpointPath) Builds an open-able snapshot of RocksDB on the same disk, which accepts an output directory on the same disk, and under the directory (1) hard-linked SST files pointing to existing live SST files (2) a copied manifest files and other files
protected void	disposeInternal() The helper function of dispose() which all subclasses of RocksObject must implement to release their associated C++ resource.

Methods inherited from class org.rocksdb.RocksObject

disOwnNativeHandle, dispose, finalize, isInitialized, isOwningNativeHandle

Methods inherited from class java.lang.Object

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

Method Detail

create

public static Checkpoint create(RocksDB db)

Creates a Checkpoint object to be used for creating open-able snapshots.

Parameters:

db - RocksDB instance.

Returns:

a Checkpoint instance.

Throws:

java.lang.IllegalArgumentException - if RocksDB instance is null.

java.lang.IllegalStateException - if RocksDB instance is not initialized.

createCheckpoint

public void createCheckpoint(java.lang.String checkpointPath)
                      throws RocksDBException

Builds an open-able snapshot of RocksDB on the same disk, which accepts an output directory on the same disk, and under the directory (1) hard-linked SST files pointing to existing live SST files (2) a copied manifest files and other files

Parameters:

checkpointPath - path to the folder where the snapshot is going to be stored.

Throws:

RocksDBException - thrown if an error occurs within the native part of the library.

disposeInternal

protected void disposeInternal()

Description copied from class: RocksObject

The helper function of dispose() which all subclasses of RocksObject must implement to release their associated C++ resource.

Specified by:

disposeInternal in class RocksObject