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BigData / Apache Hudi Interview Questions

List the query types supported by Apache Hudi?

Hudi offers three distinct query types, and knowing when each applies is a common interview probe:

  • Snapshot query — returns the latest committed, fully-merged state of the table. Works on both CoW and MoR tables.
  • Incremental query — returns only the records that changed between two specified commits, powering incremental pipelines.
  • Read-optimized query — MoR-only; reads just the compacted base (Parquet) files and skips unmerged log data, trading a small amount of freshness for much faster reads.

CoW tables effectively only need snapshot and incremental queries, since there's no separate unmerged log data to optimize around.

Which query type is exclusive to Merge-on-Read tables?
An incremental query is used to:

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