Apache Arrow IPC / Feather Preview

CosmoQuickView renders Apache Arrow IPC files as a metadata card: record-batch count, total row count and the full schema field table. Record batch data is never rendered.

Supported file extensions

.arrow, .feather

What you see

• Record-batch count and total row count across all batches
• A "Feather v2" marker when the file uses the .feather extension
• Schema field table with Name, Type and Nullable columns
• Nested fields flattened into the table with dotted names (parent.child)
• First 200 fields rendered, with a "+ N more" overflow row beyond that
• Feather v1 files are rejected by the magic check and fall through to the generic preview path

Screenshot

Screenshot not yet captured — reserved path: /screenshots/arrow.png.