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https://issues.apache.org/jira/browse/HDDS-14149?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Navin Kumar reassigned HDDS-14149:
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Assignee: Navin Kumar
> Prometheus servlet token parsing throws StringIndexOutOfBoundsException
> -----------------------------------------------------------------------
>
> Key: HDDS-14149
> URL: https://issues.apache.org/jira/browse/HDDS-14149
> Project: Apache Ozone
> Issue Type: Bug
> Components: server-framework
> Reporter: Wei-Chiu Chuang
> Assignee: Navin Kumar
> Priority: Minor
> Labels: GoodForNewContributors, good-first-issue
>
> Trying to debug a Prometheus endpoint authorization issue and found this log
> message in the OM log:
> {noformat}
> 2025-12-09 20:22:11,390 WARN
> [qtp1790831319-402]-org.eclipse.jetty.server.HttpChannel: /prom
> java.lang.StringIndexOutOfBoundsException: begin 7, end 6, length 6
> at java.base/java.lang.String.checkBoundsBeginEnd(String.java:4606)
> at java.base/java.lang.String.substring(String.java:2709)
> at java.base/java.lang.String.substring(String.java:2682)
> at
> org.apache.hadoop.hdds.server.http.PrometheusServlet.doGet(PrometheusServlet.java:53)
> {noformat}
> A typical Prometheus sends the following HTTP request to the endpoint:
> {noformat}
> User-Agent: Prometheus/2.45.3
> Accept:
> application/openmetrics-text;version=1.0.0,application/openmetrics-text;version=0.0.1;q=0.75,text/plain;version=0.0.4;q=0.5,*/*;q=0.1
> Accept-Encoding: gzip
> Authorization: Bearer <token>
> X-Prometheus-Scrape-Timeout-Seconds: 10
> {noformat}
> Apart from these log messages I don't have much clue.
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