DatabricksDatabricks
CERTIFIED-DATA-ENGINEER-PROFESSIONAL · Question #85
CERTIFIED-DATA-ENGINEER-PROFESSIONAL Question #85: Real Exam Question with Answer & Explanation
Sign in or unlock CERTIFIED-DATA-ENGINEER-PROFESSIONAL to reveal the answer and full explanation for question #85. The question stem and answer options stay visible for context.
Streaming Data Processing
Question
A data engineer is performing a join operating to combine values from a static userlookup table with a streaming DataFrame streamingDF. Which code block attempts to perform an invalid stream-static join?
Options
- AuserLookup.join(streamingDF, ["userid"], how="inner")
- BstreamingDF.join(userLookup, ["user_id"], how="outer")
- CstreamingDF.join(userLookup, ["user_id"], how="left")
- DstreamingDF.join(userLookup, ["userid"], how="inner")
- EuserLookup.join(streamingDF, ["user_id"], how="right")
Unlock CERTIFIED-DATA-ENGINEER-PROFESSIONAL to see the answer
You've previewed enough free CERTIFIED-DATA-ENGINEER-PROFESSIONAL questions. Unlock CERTIFIED-DATA-ENGINEER-PROFESSIONAL for full answers, explanations, the timed quiz mode, progress tracking, and the master PDF. Question stem and options stay visible so you can still see what's on the exam.
Topics
#Spark Structured Streaming#Stream-static join#DataFrame operations#Join types