This new reader will make schema evolution of ROW types work. See . Update it with the following option: hive.parquet-optimized-reader.enabled=true  https://github.com/fbertsch/schema_evolution_exploration/blob/master/parquet-optimized-reader%3Dtrue/use-column-names%3Dtrue/Schema_Evolution_Exploration.ipynb
Component: Metrics: Pipeline → Presto
Product: Cloud Services → Data Platform and Tools
This is on hold as it breaks some queries due to what appears to be a bug in upstream Presto. Currently working on a repro and will drop the link in here once I get that bug filed.
I'm trying to remember if this is still broken (or even a valid bug anymore).
Schema evolution of ROW types is still broken. If you haven't started using the new one then we aren't.
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