cai.zhang 7fca6e759f
enhance: Execute text indexes for multiple fields concurrently (#46279)
issue: #46274 

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## Summary by CodeRabbit

* **Performance Improvements**
* Field-level text index creation and JSON-key statistics now run
concurrently, reducing overall indexing time and speeding task
completion.

* **Observability Enhancements**
* Per-task and per-field logging expanded with richer context and
per-phase elapsed-time reporting for improved monitoring and
diagnostics.

* **Refactor**
* Node slot handling simplified to compute slot counts on demand instead
of storing them.

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Signed-off-by: Cai Zhang <cai.zhang@zilliz.com>
2025-12-23 21:05:18 +08:00
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