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Posted to issues@flink.apache.org by "ASF GitHub Bot (JIRA)" <ji...@apache.org> on 2018/11/18 10:04:00 UTC
[jira] [Updated] (FLINK-10916) Include duplicated user-specified
uid into error message
[ https://issues.apache.org/jira/browse/FLINK-10916?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]
ASF GitHub Bot updated FLINK-10916:
-----------------------------------
Labels: easyfix newbie pull-request-available (was: easyfix newbie)
> Include duplicated user-specified uid into error message
> --------------------------------------------------------
>
> Key: FLINK-10916
> URL: https://issues.apache.org/jira/browse/FLINK-10916
> Project: Flink
> Issue Type: Improvement
> Components: DataStream API
> Reporter: Kirill Mikheev
> Priority: Trivial
> Labels: easyfix, newbie, pull-request-available
>
> If user provides non-unique uid for a stream, error message does not give a clue where does the error reside in client code. Including user-provided uid into error message should narrow the search area.
> In 1.6.2 we see the message that was introduced in 1.2.0:
> {noformat}
> java.lang.IllegalArgumentException: Hash collision on user-specified ID. Most likely cause is a non-unique ID. Please check that all IDs specified via uid(String) are unique. at org.apache.flink.streaming.api.graph.StreamGraphHasherV2.generateNodeHash(StreamGraphHasherV2.java:180) at org.apache.flink.streaming.api.graph.StreamGraphHasherV2.traverseStreamGraphAndGenerateHashes(StreamGraphHasherV2.java:112) at org.apache.flink.streaming.api.graph.StreamingJobGraphGenerator.createJobGraph(StreamingJobGraphGenerator.java:134) at <rest of stack>.
> {noformat}
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