Support for custom metadata?

[vreuter]

Hello,

Is there any effort underway (or interest in) to allow users to write additional file-level metadata, e.g. for provenance of how data contained were generated? Something like for the library's own declaration?

parquet4s/core/src/main/scala/com/github/mjakubowski84/parquet4s/ParquetWriter.scala

Line 49 in 35d2c11

private val SignatureMetadata = Map("MadeBy" -> "https://github.com/mjakubowski84/parquet4s")

Sorry if I missed this in docs or looking around the code, but I didn't see it available.

Thank you!

[mjakubowski84]

No, there's no effort planned. Feel free to propose any change, PRs are welcome.

FYI, besides that "signature" metadata contains schema name which is either class name or "parquet4s_schema" if class name cannot be resolved: https://github.com/mjakubowski84/parquet4s/blob/master/core/src/main/scala/com/github/mjakubowski84/parquet4s/Schema.scala#L22

[vreuter]

@mjakubowski84 I haven't yet made time to look at what this would need, but I am interested. Will let you know if I start to work on it.

[mjakubowski84]

Great! Looking forward to your contribution!