Which of the following is NOT one of the three main types of triggers that Dataflow supports?
A . Trigger based on element size in bytes
B . Trigger that is a combination of other triggers
C . Trigger based on element count
D . Trigger based on time
Answer: A
Explanation:
There are three major kinds of triggers that Dataflow supports: 1. Time-based triggers 2. Data-driven triggers. You can set a trigger to emit results from a window when that window has received a certain number of data elements. 3. Composite triggers. These triggers combine multiple time-based or data-driven triggers in some logical way
Reference: https://cloud.google.com/dataflow/model/triggers
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