ClickHouse Certified Practice Questions - ClickHouse Certified Developer Exam

In ClickHouse, what is a 'granule' in the context of MergeTree storage?

A single row in a MergeTree data part A block of rows (default 8,192) that forms the unit of index granularity A compressed block of 65,536 rows written to disk at once A shard partition containing data for one server

Correct Answer:

A block of rows (default 8,192) that forms the unit of index granularity

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