Package org.apache.flink.runtime.checkpoint

Class SubtaskStateStats

java.lang.Object
org.apache.flink.runtime.checkpoint.SubtaskStateStats
All Implemented Interfaces:
Serializable
public class SubtaskStateStats extends Object implements Serializable
Statistics for a single subtask that is part of a checkpoint.

Collects data that is spread over different close places: CheckpointMetaData, SubtaskState, and PendingCheckpoint.

This is the smallest immutable unit of the stats.

See Also:

  • Method Details

    • getSubtaskIndex

      public int getSubtaskIndex()

    • getStateSize

      public long getStateSize()
      Returns the size of the checkpointed state at this subtask.
      Returns:
      Checkpoint state size of the sub task.

    • getCheckpointedSize

      public long getCheckpointedSize()
      Returns the incremental state size.
      Returns:
      The incremental state size.

    • getAckTimestamp

      public long getAckTimestamp()
      Returns the timestamp when the acknowledgement of this subtask was received at the coordinator.
      Returns:
      ACK timestamp at the coordinator.

    • getEndToEndDuration

      public long getEndToEndDuration(long triggerTimestamp)
      Computes the duration since the given trigger timestamp.

      If the trigger timestamp is greater than the ACK timestamp, this returns 0.

      Parameters:
      triggerTimestamp - Trigger timestamp of the checkpoint.
      Returns:
      Duration since the given trigger timestamp.

    • getSyncCheckpointDuration

      public long getSyncCheckpointDuration()
      Returns:
      Duration of the synchronous part of the checkpoint or -1 if the runtime did not report this.

    • getAsyncCheckpointDuration

      public long getAsyncCheckpointDuration()
      Returns:
      Duration of the asynchronous part of the checkpoint or -1 if the runtime did not report this.

    • getProcessedData

      public long getProcessedData()
      Returns:
      the total number of processed bytes during the checkpoint.

    • getPersistedData

      public long getPersistedData()
      Returns:
      the total number of persisted bytes during the checkpoint.

    • getAlignmentDuration

      public long getAlignmentDuration()
      Returns:
      Duration of the stream alignment (for exactly-once only) or -1 if the runtime did not report this.

    • getCheckpointStartDelay

      public long getCheckpointStartDelay()

    • getUnalignedCheckpoint

      public boolean getUnalignedCheckpoint()

    • isCompleted

      public boolean isCompleted()