Class SstPartitionerFactory

Namespace

RocksDbNet

Assembly

RocksDb.Net.dll

Forces SST file boundaries to fall on key-prefix boundaries. Maps to rocksdb_sst_partitioner_factory_t.

public sealed class SstPartitionerFactory : RocksDbHandle, IDisposable

Inheritance

object

RocksDbHandle

SstPartitionerFactory

Implements

IDisposable

Inherited Members

RocksDbHandle.Handle

RocksDbHandle.Owned

RocksDbHandle.IsDisposed

RocksDbHandle.ThrowIfDisposed()

RocksDbHandle.Dispose()

object.Equals(object)

object.Equals(object, object)

object.GetHashCode()

object.GetType()

object.ReferenceEquals(object, object)

object.ToString()

Remarks

Without a partitioner, a compaction splits files wherever the size target falls, so one prefix's data can straddle several files and each file can hold several prefixes. That makes prefix-scoped work less effective: a range delete over one prefix cannot drop whole files, and a prefix scan touches more files than it needs.

Attach with SstPartitionerFactory. RocksDb takes a shared reference, so this object may be disposed once assigned.

Methods

CreateFixedPrefix(int)

Creates a factory that partitions on the first prefixLength bytes of each key.

public static SstPartitionerFactory CreateFixedPrefix(int prefixLength)

Parameters

prefixLength int

How many leading bytes make up the prefix. Must be greater than zero.

Returns

SstPartitionerFactory

DisposeHandle()

Releases the native handle. Called during disposal.

protected override void DisposeHandle()

Remarks

Protected rather than public: it destroys the native object without marking this instance disposed or clearing the handle, so calling it from outside and then disposing normally would free the same pointer twice. It was the most Dispose-looking member on the type. Callers want Dispose().