fix: embed iceberg.schema in Arrow schema metadata for Snowflake compatibility#2250
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vovacf201 wants to merge 5 commits intoapache:mainfrom
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fix: embed iceberg.schema in Arrow schema metadata for Snowflake compatibility#2250vovacf201 wants to merge 5 commits intoapache:mainfrom
vovacf201 wants to merge 5 commits intoapache:mainfrom
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* mock change * remove fmt * add unit tests * fix tests * format * commit
#134) * fix: embed iceberg.schema in Arrow schema metadata for Snowflake compatibility The ParquetWriter was only writing the iceberg.schema JSON into the Parquet footer key-value metadata (WriterProperties). Downstream readers like Snowflake also expect it in the Arrow schema metadata map, which is encoded in the ARROW:schema IPC section of the Parquet file. Inject the iceberg.schema JSON into the Arrow schema metadata during writer initialization so it is present in both locations, matching the behavior of the Java Iceberg implementation. * feat: fixed formatting
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The ParquetWriter was only writing the iceberg.schema JSON into the Parquet footer key-value metadata (WriterProperties). Downstream readers like Snowflake also expect it in the Arrow schema metadata map, which is encoded in the ARROW:schema IPC section of the Parquet file.
Inject the iceberg.schema JSON into the Arrow schema metadata during writer initialization so it is present in both locations, matching the behavior of the Java Iceberg implementation.
Depends on #2249
Cherry-picked from risingwavelabs/iceberg-rust commit bcf208d