damccorm commented on code in PR #40683:
URL: https://github.com/apache/beam/pull/40683#discussion_r4329807641
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sdks/python/apache_beam/io/gcp/experimental/spannerio_read_perf_test.py:
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@@ -133,7 +134,8 @@ def make_insert_mutations(element):
| 'Produce rows' >> Read(
SyntheticSource(self.parse_synthetic_source_options()))
| 'Format' >> Map(format_record)
- | 'Make mutations' >> FlatMap(make_insert_mutations)
+ | 'Make mutations' >> FlatMap(
+ make_insert_mutations).with_output_types(_Mutator)
Review Comment:
Ok - could we try to run before/after that change and see if it shows the
issue? If yes, then I am fine with the change. If no, we should really
understand why we need this first
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