Michael Armbrust created SPARK-19721:
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Summary: Good error message for version mismatch in log files
Key: SPARK-19721
URL: https://issues.apache.org/jira/browse/SPARK-19721
Project: Spark
Issue Type: Bug
Components: Structured Streaming
Affects Versions: 2.1.0
Reporter: Michael Armbrust
Priority: Blocker
There are several places where we write out version identifiers in various logs
for structured streaming (usually {{v1}}). However, in the places where we
check for this, we throw a confusing error message. Instead, we should do the
following:
- Find all of the places where we do this kind of check.
- for {{vN}} where {{n>1}} say "UnsupportedLogFormat: The file {{path}} was
produced by a newer version of Spark and cannot be read by this version.
Please upgrade"
- for anything else throw an error saying the file is malformed.
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