Question 115:
Tiger Investments (TI) is a private equity trust manager specializing in border market investments. The Group is considered a pioneer investor in Southeast Asia’s Greater Sub-region and the Caribbean. Tiger Capital creates private equity funds targeting pre-emerging, post- conflict or post-disaster economies that are undergoing transition and are poised for rapid growth. The funds invest commercially in basic businesses, targeting attractive economic and social returns. Tiger Capital invests through a diversity of financial instruments including equity, and debt TI launched EMR 3.2.1 using EMRFS storage to support their real time data analytics. IT team observed that once objects are added to EMRFS in one operation and then immediately list objects in a subsequent operation, the list and the set of objects processed is incomplete most of the times. This is a continuous problem that TI team is facing mostly when running multi-step sequential steps in extract-transform-load (ETL) data processing pipelines. How can the team track consistency. Select 2 options.
Answer options:
A.Change to HDFS Ephemeral storage. This simply solves the issue B.Change to local file system thereby enabling Instance storage. This simply solves the issue C.Enable Consistent View. This allows EMR clusters to check for list and read-after-write consistency D.EMR uses Amazon DynamoDB database to store object metadata and track consistency with Ephemeral Storage E.EMR uses Amazon DynamoDB database to store object metadata and track consistency with EMRFS Storage