Task Table
A TaskTable records tasks information.
- The entire task table belongs to the same BSPJobID.
- A 2d array space is allocated with numBSPTasks row, and maxTaskAttempts is configured to check if `attempt task' exceeds the upper bound.
Each row's first slot (ie Task[0]) is assigned with a task where
TaskID's id: 1...N where N < numBSPTasks TaskAttemptID' id: 1
- A task managed by the task table has attributes such that
{TaskID's id: 1...N where N < numBSPTasks, and the same row's id should equal.} {TaskAttemptID's id: 1...M where M < maxTaskAttempts }
An Task Table Example
|
maxTaskAttempts |
||
numBSPTasks |
Task {jobId:1, taskId: 1, attemptId:1} |
Task {jobId:1, taskId: 1, attemptId:2} |
Task jobId:1, taskId: 1, attemptId:3 |
Task {jobId:1, taskId: 2, attemptId:1} |
Task {jobId:1, taskId: 2, attemptId:2} |
Task {jobId:1, taskId: 2, attemptId:3} |
Job Task Relation