io.zeebe.logstreams.impl.log.fs

Class FsLogSegmentDescriptor

java.lang.Object

io.zeebe.logstreams.impl.log.fs.FsLogSegmentDescriptor

public class FsLogSegmentDescriptor
extends Object

Segment layout

  +----------------------------+
  |         Metadata           |
  +----------------------------+
  |           Data             |
  +----------------------------+
 

Metadata layout

   0                   1                   2                   3
   0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1
  +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
  |                          Segment Id                           |
  +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
  |            Version           |          [unused]              |
  +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
  |                        Segment Capacity                       |
  +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
  |                       Cache Line Padding                    ...
 ...                                                              |
  +---------------------------------------------------------------+
  |                         Segment Size                          |
  +---------------------------------------------------------------+
  |                       Cache Line Padding                    ...
 ...                                                              |
  +---------------------------------------------------------------+

 

Field Summary

Fields

Modifier and Type	Field and Description
static int	METADATA_LENGTH
static int	SEGMENT_CAPACITY_OFFSET
static int	SEGMENT_ID_OFFSET
static int	SEGMENT_SIZE_OFFSET
static int	VERSION_OFFSET

Constructor Summary

Constructors

Constructor and Description
FsLogSegmentDescriptor()

Method Summary

Methods inherited from class java.lang.Object

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

Field Detail

SEGMENT_ID_OFFSET

public static final int SEGMENT_ID_OFFSET

VERSION_OFFSET

public static final int VERSION_OFFSET

SEGMENT_CAPACITY_OFFSET

public static final int SEGMENT_CAPACITY_OFFSET

SEGMENT_SIZE_OFFSET

public static final int SEGMENT_SIZE_OFFSET

METADATA_LENGTH

public static final int METADATA_LENGTH

Constructor Detail

FsLogSegmentDescriptor

public FsLogSegmentDescriptor()