[jira] [Updated] (FLINK-8949) Rest API failure with long URL

["Gary Yao (Jira)" <ji...@apache.org>]

     [ https://issues.apache.org/jira/browse/FLINK-8949?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Gary Yao updated FLINK-8949:
----------------------------
    Release Note:   (was: Watermarks for tasks with a high parallelism (>160) can now be queried and displayed correctly in the web frontend.)

> Rest API failure with long URL
> ------------------------------
>
>                 Key: FLINK-8949
>                 URL: https://issues.apache.org/jira/browse/FLINK-8949
>             Project: Flink
>          Issue Type: Bug
>          Components: Runtime / REST, Runtime / Web Frontend
>    Affects Versions: 1.4.2, 1.5.0, 1.6.4, 1.7.2, 1.8.2
>            Reporter: Truong Duc Kien
>            Assignee: Maximilian Michels
>            Priority: Major
>              Labels: pull-request-available
>             Fix For: 1.10.0
>
>          Time Spent: 20m
>  Remaining Estimate: 0h
>
> When you have jobs with high parallelism, the URL for a REST request can get very long. When the URL is longer than 4096 bytes, the  REST API will return error
> {{Failure: 404 Not Found}}
>  This can easily be seen in the Web UI, when Flink queries for the watermark using the REST API:
> {{GET /jobs/:jobId/vertices/:vertexId/metrics?get=0.currentLowWatermark,1.currentLowWatermark,2.currentLo...}}
> The request will fail with more than 170 subtasks and the watermark will not be displayed in the Web UI.



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