lukecwik opened a new pull request #12209: URL: https://github.com/apache/beam/pull/12209
* Make the default max connections to be unlimited. This mirrors the 2.17
and earlier behavior since we used to create one DataSource per execution
thread (and hence one connection).
* Move connection fetching to @ProcessElement to not hold a connection for
empty bundles.
* Make sure that finalize() closes the connection so that it is returned to
the pool if the bundle fails.
------------------------
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