dp-203 Practice Question 1955
Exam: dp-203
Domain: Monitor and optimize data storage and data processing
Topic: Optimize and troubleshoot data processing
Difficulty: medium
In a Spark application running on Azure Synapse Analytics, you notice that one particular partition is taking significantly longer to process than others, causing overall job delays. You suspect this is due to partition skew. Which action should you take to address this issue?
Answer Options
A
Use a custom partitioning function or repartition the data.
B
Add more nodes to the cluster to balance the load.
C
Increase the timeout settings for the Spark job.
D
Enable auto-scaling on the Spark pool.
Correct Answer
A: Use a custom partitioning function or repartition the data.
Explanation
The correct answer is to use a custom partitioning function or repartition the data to ensure even distribution across partitions. This prevents any single partition from becoming a bottleneck. Option B is incorrect because adding more nodes won't help with uneven data distribution. Option C is incorrect as it doesn't address the root cause of the issue. Option D is incorrect as it pertains to a different issue.