mleger created STORM-4025:
-----------------------------
Summary: 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
Attachments: NimbusUI_error.png, error_stack.json
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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