A Company Uses Amazon Elasticsearch Service (Amazon ES) to Store

question 23

Multiple Choice

A company uses Amazon Elasticsearch Service (Amazon ES) to store and analyze its website clickstream data. The company ingests 1 TB of data daily using Amazon Kinesis Data Firehose and stores one day's worth of data in an Amazon ES cluster. The company has very slow query performance on the Amazon ES index and occasionally sees errors from Kinesis Data Firehose when attempting to write to the index. The Amazon ES cluster has 10 nodes running a single index and 3 dedicated master nodes. Each data node has 1.5 TB of Amazon EBS storage attached and the cluster is configured with 1,000 shards. Occasionally, JVMMemoryPressure errors are found in the cluster logs. Which solution will improve the performance of Amazon ES?

• A) Increase the memory of the Amazon ES master nodes.
• B) Decrease the number of Amazon ES data nodes.
• C) Decrease the number of Amazon ES shards for the index.
• D) Increase the number of Amazon ES shards for the index.

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Definitions:

Beta

A gauge for assessing the volatility or inherent risk in a security or portfolio against the broader market index.

Security Market Line

A graphical representation of the expected return of investments at different levels of risk as per the Capital Asset Pricing Model (CAPM).

Required Rates of Return

The minimum annual percentage earned by an investment that will entice individuals or companies to put money into it, considering the risk.

Formulation

The process of devising or planning a strategy, policy, or system often based on specified principles or procedures.