[jira] [Updated] (FLINK-10916) Include duplicated user-specified uid into error message

["Leonard Xu (Jira)" <ji...@apache.org>]

     [ https://issues.apache.org/jira/browse/FLINK-10916?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Leonard Xu updated FLINK-10916:
-------------------------------
    Labels: easyfix pull-request-available starter  (was: easyfix newbie pull-request-available)

> 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: API / DataStream
>            Reporter: Kirill Mikheev
>            Priority: Minor
>              Labels: easyfix, pull-request-available, starter
>             Fix For: 1.5.6, 1.6.3, 1.7.0
>
>
> 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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