PROFESSIONAL-DATA-ENGINEER · Question #258
PROFESSIONAL-DATA-ENGINEER Question #258: Real Exam Question with Answer & Explanation
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Question
You are testing a Dataflow pipeline to ingest and transform text files. The files are compressed gzip, errors are written to a dead-letter queue, and you are using SideInputs to join data. You noticed that the pipeline is taking longer to complete than expected; what should you do to expedite the Dataflow job?
Options
- AHave a staging table that is an append-only model, and then update the production table every three hours with the changes written to staging
- BHave a staging table that is an append-only model, and then update the production table every ninety minutes with the changes written to staging
- CHave a staging table that moves the staged data over to the production table and deletes the contents of the staging table every three hours
- DHave a staging table that moves the staged data over to the production table and deletes the contents of the staging table every thirty minutes
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