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Motivation

The procedure trigger_tag_automatic_creation was designed to force creating an auto-tag after the right tag time.
For example, if called after hour 0, an auto tag should be created for a daily auto-tagged table which has not been auto-tagged with the name of yesterday.

But it doesn't work under some conditions

• No snapshot exits since the auto-tag time;
• The calling time is before the delay time.

The reason is that

1. Spark is not like Flink which could commit an empty message and make a new snapshot, so when triggered there may be not an appropriate snapshot for tag.
2. Even if there is a snapshot since the auto-tag time, the TagAutoCreation may still refuse to create since it needs a snapshot after the delay time.

For example

1. T is daily tag table with creation-delay=10m
2. spark-sql call this procedure at 2025-10-22T00:02:00,
3. if there is no snapshot between 00:00:0 ~ 00:02:00, creating no auto-tag
4. if there is a snapshot at 00:01:00, but it's earlier than the delay time, still creating no auto-tag.

Solution

1. Like Flink, spark will also commit empty message to make sure a snapshot when calling trigger procedure.
2. Set up a new spark-sql conf option, like

set `spark.paimon.trigger-tag-auto-creation-ignore-delay` = true;

if the option is true, creat an auto tag even if the snapshot is earlier than the delay.

Anything else?

No response

Are you willing to submit a PR?

• I'm willing to submit a PR!