Which one is correct about the description of the Loader job in FusionInsight HD?

Which one is correct about the description of the Loader job in FusionInsight HD?
A . After the Loader submits the job to Yam for execution, if the Loader service is abnormal at this time, the job execution fails.
B. After the Loader submits the job to Yam for execution, if a Mapper task fails to execute, it can automatically retry
C. After the Loader job fails to execute, garbage-level data will be generated, which needs to be cleared manually by the user
D. After the Loader submits a job to Yam for execution, no other jobs can be submitted until the job is executed

View Answer

Answer: B