MuleSoft Certified Integration Architect – Level 1 — Question 32

A Mule application contains a Batch Job with two Batch Steps (Batch_Step_1 and Batch_Step_2). A payload with 1000 records is received by the Batch Job.
How many threads are used by the Batch Job to process records, and how does each Batch Step process records within the Batch Job?

Answer options

• A. Each Batch Job uses SEVERAL THREADS for the Batch Steps Each Batch Step instance receives ONE record at a time as the payload, and BATCH STEP INSTANCES execute IN PARALLEL to process records and Batch Steps in ANY order as fast as possible
• B. Each Batch Job uses SEVERAL THREADS for the Batch Steps Each Batch Step instance receives ONE record at a time as the payload, and RECORDS are processed IN PARALLEL within and between the two Batch Steps
• C. Each Batch Job uses a SINGLE THREAD for all Batch Steps Each Batch Step instance receives ONE record at a time as the payload, and RECORDS are processed IN ORDER, first through Batch_Step_1 and then through Batch_Step_2
• D. Each Batch Job uses a SINGLE THREAD to process a configured block size of record Each Batch Step instance receives A BLOCK OF records as the payload, and BLOCKS of records are processed IN ORDER

Correct answer: B

Explanation

The correct answer is B because a Batch Job in Mule can utilize several threads for Batch Steps, allowing for parallel processing of records within and across Batch Steps. Options A, C, and D are incorrect as they either misrepresent the threading model or the processing order of records, which does not align with the capabilities of the Batch Job in Mule.