Panic when run with default-spec.toml

[kavirajk]

Steps to reproduce

1. cargo build or cargo build --release
2. cargo run or cargo run --release or ./target/release/parquet-gen or ./target/release/parquet-gen -s default-spec.toml

It panics with following error.

parse spec file: Error { inner: Error { inner: TomlError { message: "invalid inline table\nexpected `}`"

Problem.

I think the issue is with default-spec.toml. Particularly bloom_filter config.

# write with a bloom filter on this column
bloom_filter = {
  fpp = 0.1,
  ndv = 100000
}

Looks like we cannot use multi-line as show above. If I change it to following single-line, then it's able to parse default-spec.toml just fine.

# write with a bloom filter on this column
bloom_filter = { fpp = 0.1, ndv = 100000 }

Potential solution

Change bloom_filter config used in default-spec.toml to use single-line inline table like explained above.

Reference

1. Similar issue with cargo.toml (not supporting multi-line inline table)
2. Upstream issue of toml-rs (dependency used in this tool) still doesn't support TOML 1.1 spec which added support for multi-line inline table.