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Subscription: intro poll and prefetch v2 for tsfile topic

1

The core idea of v2 is: 1. Polling should not drive prefetch; instead, during the remaining time, it should poll the prefetching queue. 2. Prefetch should handle tsfile events specially...

VGalaxies

## Description ### Content1 ... ### Content2 ... ### Content3 ... This PR has: - [ ] been self-reviewed. - [ ] concurrent read - [ ] concurrent write -...

shizy818

## Description As the title said. This PR has: - [ ] been self-reviewed. - [ ] concurrent read - [ ] concurrent write - [ ] concurrent read and...

Caideyipi

## Description As the title said. This PR has: - [ ] been self-reviewed. - [ ] concurrent read - [ ] concurrent write - [ ] concurrent read and...

Caideyipi

linxt20

Bump urllib3 from 2.2.2 to 2.5.0 in /iotdb-core/ainode

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Bumps [urllib3](https://github.com/urllib3/urllib3) from 2.2.2 to 2.5.0. Release notes Sourced from urllib3's releases. 2.5.0 🚀 urllib3 is fundraising for HTTP/2 support urllib3 is raising ~$40,000 USD to release HTTP/2 support and...

dependabot[bot]

## Description Parallel disptach read fragment instance

shuwenwei

## Description As the title said This PR has: - [ ] been self-reviewed. - [ ] concurrent read - [ ] concurrent write - [ ] concurrent read and...

luoluoyuyu

## Description As the title said. This PR has: - [ ] been self-reviewed. - [ ] concurrent read - [ ] concurrent write - [ ] concurrent read and...

Caideyipi

### Search before asking - [x] I searched in the [issues](https://github.com/apache/iotdb/issues) and found nothing similar. ### Motivation Does the C# SDK support data subscription? ### Solution _No response_ ### Alternatives...

eleleme