Cleanup panic!()

[leekeiabstraction]

Search before asking

• I searched in the issues and found nothing similar.

Description

Issue to track clean up of panics in rust client. Lower priority than 1.0 release blockers

Example place where we have panic:

fluss-rust/crates/fluss/src/row/column.rs

Line 98 in eaf5a24

other => panic!("Expected Timestamp column at position {pos}, got {other:?}"),

Example place where we return Error:

fluss-rust/crates/fluss/src/row/decimal.rs

Line 138 in eaf5a24

return Err(Error::IllegalArgument {

We should replace panic with returning Err instead

Willingness to contribute

• I'm willing to submit a PR!