For the HBase component of the FusionInsight HD platform, what attributes of the secondary index need to be defined when adding a secondary index? (multiple choice)

Question

Options

• AIndex name
• BIndex column
• CIndex column type
• DThe name of the column family to which the index column belongs

• A
  100% (25)

Explanation

All four options are correct because defining a secondary index in HBase (on FusionInsight HD) requires a complete specification: A) the index name uniquely identifies the index within the table; B) the index column specifies which column's values will be indexed to enable fast lookups; C) the index column type is required so HBase knows how to serialize and compare values during indexing (e.g., string vs. integer sorting differs significantly); and D) the column family is mandatory because HBase stores data by column family, so the system must know which family the indexed column belongs to in order to locate and maintain it. Since all four fields are required inputs in the FusionInsight HD secondary index creation UI/API, omitting any one would result in an incomplete or invalid index definition - there are no distractors here, just a test of whether you know the full required attribute set. Memory tip: Think of it as filling out a form - you need a name (A), which column (B), what type (C), and which family (D) - all four slots must be filled before the form can be submitted.

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