branch-3.0: [performance](load) increase max_broker_concurrency to 100 #44929 #45238
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Contributor
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run buildall |
Increase default `max_broker_concurrency` to 100 to improve broker load
performance.
This option will affect the max number of scan / sink instances allowed
in a broker load.
```
parallel instance = min(max_broker_concurrency,
source file size / min_bytes_per_broker_scanner,
num backends * load_parallelism)
```
S3 load time of tpcds_1000g catalog_sales:
* before: 438s
* after: 225s
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run buildall |
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Cherry-picked from #44929