Seth Wiesman created FLINK-16193:
------------------------------------
Summary: Improve error messaging when a key is assigned to the
wrong key group range
Key: FLINK-16193
URL: https://issues.apache.org/jira/browse/FLINK-16193
Project: Flink
Issue Type: Improvement
Components: API / DataStream
Affects Versions: 1.11.0
Reporter: Seth Wiesman
Occasionally, users may run into an exception that reads something like:
{{java.lang.IllegalArgumentException: Key group 45 is not in
KeyGroupRange\{startKeyGroup=0, endKeyGroup=42}}}
{{}}
This may be caused by a number of issues including:
1) Unstable hash and equals methods on their key objects
2) Improper use of DataStreamUtils#reinterpretAsKeyedStream
{{}}
{{Key group ranges are a fairly low level detail that most users will be
unfamiliar with when working with Flink. We should offer more comprehensive
error messaging that outlines likely causes and solutions.}}
{{}}
--
This message was sent by Atlassian Jira
(v8.3.4#803005)
