Field Detail

• SORT_BY_IDENTITY

  public static final Comparator<Follower> SORT_BY_IDENTITY

  Sorts instances by their identities.

Method Detail

• getIdentity

  public String getIdentity()

  Get the identity of this follower.

  Returns:

  follower identity

• getAddress

  public String getAddress()

  Get the address of this follower.

  Returns:

  follower address

• getNextIndex

  public long getNextIndex()

  Get the index of the next log entry to send to this follower.

  Returns:

  follower next index

• getMatchIndex

  public long getMatchIndex()

  Get the index of the highest log entry in the follower's log known to match the leader's log.

  Returns:

  follower next index

• getLeaderTimestamp

  public Timestamp getLeaderTimestamp()

  Get the most recent (leader's) request timestamp returned by this follower in a response, if any.

  Returns:

  follower leader timestamp, or null if no response has been received yet from this follower

• getLeaderCommit

  public long getLeaderCommit()

  Get the leader commit index most recently sent to this follower.

  Returns:

  follower leader commit index

• isSynced

  public boolean isSynced()

  Determine whether we believe this follower is "synchronized".

  By "synchronized" we mean the most recently received AppendResponse indicated a successful match of the previous log entry. We only send "probes" to unsynchronized followers.

  Returns:

  true if synchronized

• isReceivingSnapshot

  public boolean isReceivingSnapshot()

  Determine whether this follower is currently being sent a whole database snapshot download.

  Returns:

  true if snapshot install is in progress

• toString

  public String toString()

  Overrides:

  toString in class Object