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Exam Certified Data Engineer Professional All Questions

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Exam Certified Data Engineer Professional topic 1 question 72 discussion

Actual exam question from Databricks's Certified Data Engineer Professional
Question #: 72
Topic #: 1
[All Certified Data Engineer Professional Questions]

A data team's Structured Streaming job is configured to calculate running aggregates for item sales to update a downstream marketing dashboard. The marketing team has introduced a new promotion, and they would like to add a new field to track the number of times this promotion code is used for each item. A junior data engineer suggests updating the existing query as follows. Note that proposed changes are in bold.

Original query:



Proposed query:



Proposed query:

.start(“/item_agg”)

Which step must also be completed to put the proposed query into production?

  • A. Specify a new checkpointLocation
  • B. Increase the shuffle partitions to account for additional aggregates
  • C. Run REFRESH TABLE delta.'/item_agg'
  • D. Register the data in the "/item_agg" directory to the Hive metastore
  • E. Remove .option(‘mergeSchema’, ‘true’) from the streaming write
Show Suggested Answer Hide Answer
Suggested Answer: A 🗳️

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Highly Voted 11 months, 1 week ago
This question is broken. Proposed query cannot be identified.
upvoted 21 times
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A (35%)
C (25%)
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