query planning

1. September 10, 202630 min read

   Partition Statistics Files in Apache Iceberg

   The underused Iceberg metadata for planning: what the partition statistics file holds, what the spec guarantees, how to write one, and when it earns its slot.

2. September 2, 202630 min read

   Storage-Partitioned Joins and the Bucket Transform

   How the spec-defined bucket transform lets engines skip the shuffle in joins, and how to set it up and keep it engaged in Spark.

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