重试并捕获 AWS Step Function 任务

Question

对于 StepFunctions，我们是否可以两者兼而有之Retry，并Catch在穷尽的情况下共同努力？

这是我的用例

1. 作业失败
2. 重试
3. 重试耗尽，转至 Catch
4. 捕获所有错误，移至下一个作业，并更新数据库表以标记此作业失败（另一项任务）
5. 或者在第一次运行或重试成功后，转移到下一个作业

    "ExecuteMyJob": {
            "Type": "Task",
            "Resource": "arn:aws:states:::glue:startJobRun.sync",
            "Parameters": {
                "JobName.$": "$.jobName",
                "Arguments.$": "$.jobArguments"
            },
            "Retry" : [{
                "ErrorEquals": [ "States.TaskFailed", "States.Runtime" ],
                "MaxAttempts": 3,
                "IntervalSeconds": 60,
                "BackoffRate": 2
            }],
            "Catch": [{
                "ErrorEquals": [ "States.ALL" ],
                "Next": "MarkJobFailOnDbTable"
            }],
            "Next": "NextJobOnPreviousSuccess"
        }

Answer 1

Step Functions 可让您同时拥有Retry和Catch：

https://docs.aws.amazon.com/step-functions/latest/dg/concepts-error-handling.html

该链接中的复杂重试方案示例与您的示例类似：

"X": {
   "Type": "Task",
   "Resource": "arn:aws:states:us-east-1:123456789012:task:X",
   "Next": "Y",
   "Retry": [ {
      "ErrorEquals": [ "ErrorA", "ErrorB" ],
      "IntervalSeconds": 1,
      "BackoffRate": 2.0,
      "MaxAttempts": 2
   }, {
      "ErrorEquals": [ "ErrorC" ],
      "IntervalSeconds": 5
   } ],
   "Catch": [ {
      "ErrorEquals": [ "States.ALL" ],
      "Next": "Z"
   } ]
}