[Feature] Support reading Paimon TIME columns

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@QuakeWang 已经在做这个了。

开始于 2026年9月9日。

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描述

enhancement
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Motivation

Reading a Paimon table containing a TIME column fails during schema deserialization:

Invalid: deserialize failed, possibly type incompatible:
parse data type failed, error msg: Invalid: Unsupported type: TIME

The Parquet table was created with PyPaimon 2.0.0 using an Arrow time32[ms] column containing 00:00:00.123, 23:59:59.999, and NULL. PyPaimon successfully writes and reads these values, but reading through the Vane Paimon extension fails.

Tested with paimon-cpp commit 366323740cc13b5e113d9465080624b28e3880e8, bundled in extension commit b0ac989.

Solution

Support Paimon TIME schema parsing and the corresponding Arrow time representation in the read path. Add a Parquet round-trip test covering millisecond precision, boundary values, and NULL.

The current type parser still has no TIME handling branch.

Anything else?

The failure was reproduced through Vane, not a standalone paimon-cpp executable.

Are you willing to submit a PR?
  • I'm willing to submit a PR!
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