Microsoft Azure Data Engineer Associate - DP-203
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You are working with a dataset in Azure Synapse Analytics that exhibits significant data skew. Describe the strategies you would use to handle this skew and ensure balanced data distribution across the compute nodes. Include specific techniques or configurations that can be applied to mitigate the effects of data skew on query performance.
Explanation:
Using Azure Synapse Analytics' distribution keys and partitioning strategies to evenly distribute data is an effective approach to handling data skew. This method involves selecting appropriate distribution keys that balance the data across nodes and creating partitions that optimize data access patterns. By strategically distributing the data, the performance of queries and operations can be significantly improved, reducing the impact of data skew on the overall system performance.