Chengzhi Zhao created FLINK-8599:
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Summary: Improve the failure behavior of the
ContinuousFileReaderOperator for bad files
Key: FLINK-8599
URL: https://issues.apache.org/jira/browse/FLINK-8599
Project: Flink
Issue Type: New Feature
Components: DataStream API
Affects Versions: 1.3.2
Reporter: Chengzhi Zhao
So we have a s3 path that flink is monitoring that path to see new files
available.
{code:java}
val avroInputStream_activity = env.readFile(format, path,
FileProcessingMode.PROCESS_CONTINUOUSLY, 10000) {code}
I am doing both internal and external check pointing and let's say there is a
bad file (for example, a different schema been dropped in this folder) came to
the path and flink will do several retries. I want to take those bad files and
let the process continue. However, since the file path persist in the
checkpoint, when I try to resume from external checkpoint, it threw the
following error on no file been found.
{code:java}
java.io.IOException: Error opening the Input Split s3a://myfile [0,904]: No
such file or directory: s3a://myfile{code}
As [[email protected]] suggested, we could check if a path exists and before
trying to read a file and ignore the input split instead of throwing an
exception and causing a failure.
Also, I am thinking about add an error output for bad files as an option to
users. So if there is any bad files exist we could move them in a separated
path and do further analysis.
Not sure how people feel about it, but I'd like to contribute on it if people
think this can be an improvement.
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