Hi Drill Community,
Using drill-embedded, I encountered this error while doing a query on folders containing thousands of parquet files: Error: SYSTEM ERROR: IOException: FAILED_TO_UNCOMPRESSED(5) Fragment 1:9 After re-running the same query with the log level set to DEBUG, I tracked the files that were scanned by Fragment 1:9, performed the same query on each individual file until I got the same error. It turned out that a column in one of the parquet file is causing this issue. Whether it is an issue with our parquet writer or with the drill reader remains to be determined. My questions is : Is there an option to have a fragment thread to move on to the next file after it encounter such error, without completely spoiling the whole query and result? Also in this case, it would have been useful if it was clearly specified in the log which parquet file is causing issue. Thanks a lot François
