hard20 pts · first answer countsicebergpartitioning

Iceberg hidden partitioning

An Iceberg table is partitioned by day(event_ts). It has grown, and you switch new data to hour(event_ts). What happens to existing queries that filter on event_ts?

A.They break until every query adds an event_hour columnB.All old data must be rewritten before the change is allowedC.Queries fall back to scanning the whole table foreverD.They keep working unchanged; Iceberg prunes old files by the day spec and new files by the hour spec

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Iceberg hidden partitioning

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