BatchCompute provides the instances of a task with the task-related environment variable information to allow user program to execute different computing tasks based on the environment variables.
|BATCH_JOB_ID||Job ID||ID of the job to which an instance belongs. It is included in the returned result after the job is submitted, such as job-n4ohivif|
|BATCH_TASK_NAME||Task name||Name of the task to which an instance belongs. It is specified when the job is submitted, such as
|BATCH_TASK_INSTANCE_NUM||Total number of instances of a task||The total number of instances requested to run concurrently in the task to which the instances belong, such as
|BATCH_TASK_INSTANCE_INDEX||Task instance index||The index of an instance in the task to which the instance belongs; for example, if five instances are specified to run concurrently in a task, then the indices of these instances are 0, 1, 2, 3, 4|