Fix race conditions when initializing and rendering IPyWidgets #5462
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mattpap
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Aug 31, 2023
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@@ Coverage Diff @@
## main #5462 +/- ##
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- Coverage 70.07% 23.67% -46.41%
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Files 274 274
Lines 40089 40089
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- Hits 28094 9490 -18604
- Misses 11995 30599 +18604
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When rendering IPyWidgets in a notebook there was a race condition which meant that because lazy_initialize was slow you could end up with multiple Views for the same model.
@mattpap While I realize I was inappropriately using lazy_initialize here I think this revealed a bokeh bug where there could be a race condition where
this._child_viewswas reset while a view was still initializing meaning that it was never cleaned up (or reused).Fixes #5459