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https://issues.apache.org/jira/browse/STORM-4025?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17810798#comment-17810798
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Richard Zowalla commented on STORM-4025:
----------------------------------------
Thanks for reporting. This is indeed related to the JSON parser switch! Next
storm release will contain a fix.
> ClassCastException when changing log level in Storm UI
> ------------------------------------------------------
>
> Key: STORM-4025
> URL: https://issues.apache.org/jira/browse/STORM-4025
> Project: Apache Storm
> Issue Type: Bug
> Components: storm-webapp
> Affects Versions: 2.6.0
> Reporter: mleger
> Assignee: Richard Zowalla
> Priority: Major
> Fix For: 2.7.0
>
> Attachments: NimbusUI_error.png, error_stack.json
>
> Time Spent: 10m
> Remaining Estimate: 0h
>
> A ClassCastException is raised in Storm UI when trying to change the log
> level for a topology (cf. attached screenshot and full error stack).
> * POST request payload sent to the logconfig web service:
> {code:java}
> {"namedLoggerLevels":{"com.example":{"target_level":"DEBUG","reset_level":"INFO","timeout":30}}}{code}
> * Error message received:
> {noformat}
> "error": "500 Server Error",
> "errorMessage": "java.lang.ClassCastException: java.lang.Integer incompatible
> with java.lang.Long\n\tat
> org.apache.storm.daemon.ui.UIHelpers.putTopologyLogLevel(UIHelpers.java:2422)\n\tat
>
> org.apache.storm.daemon.ui.resources.StormApiResource.putTopologyLogconfig(StormApiResource.java:469)\n\tat
> [...]
> {noformat}
> The timeout parameter seems to be parsed as an Integer whereas it is cast
> into a Long in the code, then raising a ClassCastException:
> cf.
> [https://github.com/apache/storm/blob/ae3a96e762095553311d9e335f7505c0b351d810/storm-webapp/src/main/java/org/apache/storm/daemon/ui/UIHelpers.java#L2422C13-L2422C67]
> This issue could be related to the recent change of the JSON parser having a
> different behavior when parsing numbers:
> cf.
> [https://github.com/apache/storm/commit/1406f680c8d65de591c997066d2ca2cd80e56c4f#diff-67de3adeec3548f570568d351b76a4b3a936ee9ed0f3f59445ff3def0505f247]
>
>
>
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