BigData / Apache Hudi Interview Questions
What is clustering in Hudi?
Clustering is a table service that reorganizes existing data files to improve layout and query performance, without changing the table's logical content — no records are added, removed, or modified.
Typical clustering work includes merging many small files into fewer larger ones, and sorting or co-locating records by a chosen column so that predicate-based queries can skip more files. It's conceptually similar to a "reorganize" or "optimize" operation in a traditional database, and like compaction, it usually runs as a scheduled background job rather than inline with every write.
Clustering changes:
A common clustering task is:
More Related questions...
