Why two successful queries can count different rows when they resolve different Delta or Iceberg...
Why two successful queries can count different rows when they resolve different Delta or Iceberg table states.
Two queries return different counts for the same Iceberg table:
the catalog query returns 12,480,032 rows;
a direct scan of the storage folder returns 12,691,404 rows.
Neither query fails. The difference is 211,372 rows. The numbers are
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Query one Apache Iceberg table from Trino, Spark, and DuckDB with the same snapshot model and honest trade-offs.
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Every night a state feed overwrites 154 rows in my database and asks nobody. On 15 other rows it has to file a request and wait.…
Original Japanese article: Iceberg REST Catalogを直接叩いて、Glue Data CatalogとS3 Tablesの違いを理解する ...
Benchmarks in this industry are mostly untrustworthy, and usually for the same reason: the person...
