Previously, when input_format_parquet_max_block_size = 0

Why it matters

This fix prevents ClickHouse from getting stuck when users accidentally set input_format_parquet_max_block_size to 0, which is an invalid configuration. It improves stability and robustness when processing Parquet input formats.

How to use it

Ensure that the setting input_format_parquet_max_block_size is set to a valid positive integer value. If this setting is accidentally set to 0, ClickHouse will no longer hang but handle it properly after this fix.