F Méthot created DRILL-4352:
-------------------------------
Summary: Query fails on single corrupted parquet column
Key: DRILL-4352
URL: https://issues.apache.org/jira/browse/DRILL-4352
Project: Apache Drill
Issue Type: Improvement
Components: Execution - Monitoring, Storage - Parquet
Affects Versions: 1.4.0
Reporter: F Méthot
Getting this error when querying a corrupted Parquet file.
Error: SYSTEM ERROR: IOException: FAILED_TO_UNCOMPRESSED(5)
Fragment 1:9
A single corrupt file among 1000s will cause a query to break.
Encountering a corrupt files should be logged and not spoil a query.
It would have been useful if it was clearly specified in the log which parquet
file is causing issue.
Response from Ted Dunning:
This is a lot like the problem of encountering bad lines in a line oriented
file such as CSV or JSON.
Drill doesn't currently have a good mechanism for skipping bad input. Or
rather, it has reasonably good mechanisms, but it doesn't use them well.
I think that this is a very reasonable extension of the problem of dealing with
individual bad records and should be handled somehow by the parquet scanner.
--
This message was sent by Atlassian JIRA
(v6.3.4#6332)
