yihua commented on code in PR #13669:
URL: https://github.com/apache/hudi/pull/13669#discussion_r2252010769


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hudi-spark-datasource/hudi-spark/src/test/resources/upgrade-downgrade-fixtures/mor-tables/hudi-v4-table.zip:
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Review Comment:
   For the bloom filters in Parquet files written by Hudi, they are controlled 
by `hoodie.parquet.bloom.filter.enabled`. It should still be enabled, just that 
we can set `hoodie.index.bloom.num_entries=100`, a much smaller value compared 
to the default, to reduce the size.



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