ArnavBalyan opened a new pull request, #3308:
URL: https://github.com/apache/parquet-java/pull/3308
- Move away from shared singleton DEFAULT_VALUES_WRITER_FACTORY to new
instance per builder to prevent concurrent threads from corrupting each other's
delegateFactory state.
- Currently there is a bug where multiple builders can corrupt each others
delegateFactory that can cause files to get written with wrong format.
- Since valuesWriterFactory.initialize() uses the singleton state which can
be altered by another writer thread.
- Fixes: #3224
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