Package io.debezium.connector.spanner.task.scaler

Class TaskScaleCalculator

java.lang.Object

io.debezium.connector.spanner.task.scaler.TaskScaleCalculator

public class TaskScaleCalculator
extends Object

Calculates a new number of tasks which should be present in the connector after the scaling

Field Summary

Fields

Modifier and Type	Field	Description
private static final double	SCALE_IN_TASKS_THRESHOLD
private static final double	SCALE_OUT_TASKS_STEP

Constructor Summary

Constructors

Modifier	Constructor	Description
private	TaskScaleCalculator()

Method Summary

Modifier and Type	Method	Description
static int	newTasksCount(int currentTasksCount, int desiredPartitionsTasks, int tasksMax, int tasksMin, long partitionsInWorkCount, long idlingTaskCount)
private static double	partitionTaskRatio(long tasksCount, long partitionsInWorkCount)

Methods inherited from class java.lang.Object

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

Field Details

SCALE_OUT_TASKS_STEP

private static final double SCALE_OUT_TASKS_STEP

See Also:

• Constant Field Values

SCALE_IN_TASKS_THRESHOLD

private static final double SCALE_IN_TASKS_THRESHOLD

See Also:

• Constant Field Values

Constructor Details

TaskScaleCalculator

private TaskScaleCalculator()

Method Details

newTasksCount

public static int newTasksCount(int currentTasksCount,
 int desiredPartitionsTasks,
 int tasksMax,
 int tasksMin,
 long partitionsInWorkCount,
 long idlingTaskCount)

partitionTaskRatio

private static double partitionTaskRatio(long tasksCount,
 long partitionsInWorkCount)