[C++] Support for writing TIMESTAMP_NANOS Parquet metadata

[asfimport]

This was brought up on the mailing list.

We also will need to do corresponding work in the parquet-cpp library to opt in to writing nanosecond timestamps instead of casting to micro- or millisecond.

Reporter: Wes McKinney / @wesm
Assignee: TP Boudreau / @tpboudreau

Related issues:

• [C++] rename parquet::LogicalType to parquet::ConvertedType (blocks)
• [Python] Write nanosecond timestamps using new NANO LogicalType Parquet unit (relates to)
• [C++] Upgrade to use LogicalType annotations instead of ConvertedType (depends upon)

PRs and other links:

• GitHub Pull Request #4421

_{Note: This issue was originally created as ARROW-3729. Please see the migration documentation for further details.}

[asfimport]

TP Boudreau / @tpboudreau:
Could someone please assign this issue to me? I don't seem to be able to claim it myself. Thanks.

The enhancement I'm contemplating (and have largely completed) involves switching over to using (that is, generating on write, recognizing on read) the new parquet.thrift LogicalType (aka "annotation") metadata recently introduced into parquet-cpp (see PARQUET-1411).  Thus the patch will be broader than just adding nanosecond units to timestamps, but will include that.

 

[asfimport]

Uwe Korn / @xhochy:
@tpboudreau assigned to you and also gave you the permissions so that you can do it by yourself.

[asfimport]

Wes McKinney / @wesm:
Issue resolved by pull request 4421
#4421