Allow unsafe triggers for python nexmark benchmarks

[y1chi]

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Codecov Report

Merging #22596 (3fb0ddc) into master (c8d92b0) will decrease coverage by 0.00%.
The diff coverage is 0.00%.

@@            Coverage Diff             @@
##           master   #22596      +/-   ##
==========================================
- Coverage   74.22%   74.22%   -0.01%     
==========================================
  Files         707      707              
  Lines       93301    93303       +2     
==========================================
- Hits        69251    69250       -1     
- Misses      22782    22785       +3     
  Partials     1268     1268              

Flag	Coverage Δ
python	83.59% <0.00%> (-0.01%)	⬇️

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Impacted Files	Coverage Δ
...eam/testing/benchmarks/nexmark/nexmark_launcher.py	0.00% <0.00%> (ø)
sdks/python/apache_beam/utils/interactive_utils.py	95.12% <0.00%> (-2.44%)	⬇️
sdks/python/apache_beam/io/source_test_utils.py	88.01% <0.00%> (-1.39%)	⬇️
...hon/apache_beam/runners/worker/bundle_processor.py	93.54% <0.00%> (+0.12%)	⬆️
...ks/python/apache_beam/runners/worker/sdk_worker.py	89.09% <0.00%> (+0.15%)	⬆️
...hon/apache_beam/runners/direct/test_stream_impl.py	94.02% <0.00%> (+0.74%)	⬆️

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[yeandy]

Can you please explain why we want to allow unsafe triggers here?

[y1chi]

Can you please explain why we want to allow unsafe triggers here?

One of the query is using AfterWatermark(early=AfterCount(100000)), it is ok to use unsafe triggers in nexmark queries since they are not designed for data integrity but for benchmarks.

[yeandy]

Thanks for the explanation.