Running the basic_operations examples fails with Error: Transaction { source: WriterFeaturesRequired(TimestampWithoutTimezone) }

[imor]

Environment

Delta-rs version: main branch

Binding: Rust

Environment:

• Cloud provider:
• OS: macOS
• Other: local

---

Bug

What happened:

Running basic_operations examples fails with Error: Transaction { source: WriterFeaturesRequired(TimestampWithoutTimezone) }

What you expected to happen:

Example runs successfully

How to reproduce it:

From the delta-rs/crates/deltalake folder run cargo run --features="datafusion" --example basic_operations

More details:
I have tracked the error down to these lines:

delta-rs/crates/core/src/operations/transaction/protocol.rs

Lines 121 to 123 in 752eef5

	return Err(TransactionError::WriterFeaturesRequired(
	WriterFeatures::TimestampWithoutTimezone,
	));

But I'm not sure how to fix this. If I comment out these lines, the example does work.

[jhoekx]

The example was creating an Arrow array with timestamps without time zone. The delta data type was Timestamp, which is defined as having a UTC timezone, but it should be TimestampNtz to correspond to the data.