Migrate session length to Iceberg
Migrate session length tables to Iceberg format, and preserve the current Hive parquet table.
See instructions here: https://gerrit.wikimedia.org/r/c/analytics/refinery/+/994697
Bug: T352672
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Migrate session length tables to Iceberg format, and preserve the current Hive parquet table.
See instructions here: https://gerrit.wikimedia.org/r/c/analytics/refinery/+/994697
Bug: T352672