A Company Is Streaming Its High-Volume Billing Data (100 MBps)

question 15

Multiple Choice

A company is streaming its high-volume billing data (100 MBps) to Amazon Kinesis Data Streams. A data analyst partitioned the data on account_id to ensure that all records belonging to an account go to the same Kinesis shard and order is maintained. While building a custom consumer using the Kinesis Java SDK, the data analyst notices that, sometimes, the messages arrive out of order for account_id. Upon further investigation, the data analyst discovers the messages that are out of order seem to be arriving from different shards for the same account_id and are seen when a stream resize runs. What is an explanation for this behavior and what is the solution?

• A) There are multiple shards in a stream and order needs to be maintained in the shard. The data analyst needs to make sure there is only a single shard in the stream and no stream resize runs.
• B) The hash key generation process for the records is not working correctly. The data analyst should generate an explicit hash key on the producer side so the records are directed to the appropriate shard accurately.
• C) The records are not being received by Kinesis Data Streams in order. The producer should use the PutRecords API call instead of the PutRecord API call with the SequenceNumberForOrdering parameter.
• D) The consumer is not processing the parent shard completely before processing the child shards after a stream resize. The data analyst should process the parent shard completely first before processing the child shards.

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Definitions:

Cash

Physical or digital money in hand or readily available for transactions or use.

Convertible Debt

A short-term loan that can be turned into equity when future financing is issued.

Convertible Bond

A type of bond issued by a corporation that can be converted into a predetermined number of the company's equity shares at certain times during the bond's life, usually at the discretion of the bondholder.

Revolving Debt

A form of credit that allows the borrower to draw down, repay, and redraw loans repeatedly up to a certain credit limit.