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ASF GitHub Bot commented on HADOOP-18954: ----------------------------------------- K0K0V0K opened a new pull request, #6229: URL: https://github.com/apache/hadoop/pull/6229 ### Description of PR - The JMX json represents NaN like invalid JSON token, so some parser can not parse. - To fix this a new feature introduced to replace NaN with 0.0 values. - The feature can be turned on with the hadoop.http.jmx.nan-filter.enabled config ### How was this patch tested? - Manually tested on a cluster where NaN values were present in the RM response. - When the feature was turned on, the NaN values were replaced ### For code changes: - [ ] Does the title or this PR starts with the corresponding JIRA issue id (e.g. 'HADOOP-17799. Your PR title ...')? - [ ] Object storage: have the integration tests been executed and the endpoint declared according to the connector-specific documentation? - [ ] If adding new dependencies to the code, are these dependencies licensed in a way that is compatible for inclusion under [ASF 2.0](http://www.apache.org/legal/resolved.html#category-a)? - [ ] If applicable, have you updated the `LICENSE`, `LICENSE-binary`, `NOTICE-binary` files? > Filter NaN values from JMX json interface > ----------------------------------------- > > Key: HADOOP-18954 > URL: https://issues.apache.org/jira/browse/HADOOP-18954 > Project: Hadoop Common > Issue Type: Improvement > Components: common > Reporter: Bence Kosztolnik > Assignee: Bence Kosztolnik > Priority: Major > > As we can see in this [Yarn > documentation|https://hadoop.apache.org/docs/stable/hadoop-yarn/hadoop-yarn-site/ResourceManagerRest.html] > beans can represent Float values as NaN. These values will be represented in > the JMX response JSON like: > {noformat} > ... > "GuaranteedCapacity": NaN, > ... > {noformat} > Based on the [JSON doc|https://www.json.org/] NaN is not a valid JSON token ( > however some of the parser libs can handle it ), so not every consumer can > parse values like these. > To be able to parse NaN values, a new feature flag should be created. > The new feature will replace the NaN values with 0.0 values. > The feature is default turned off. It can be enabled with the > *hadoop.http.jmx.nan-filter.enabled* config. -- This message was sent by Atlassian Jira (v8.20.10#820010) --------------------------------------------------------------------- To unsubscribe, e-mail: common-issues-unsubscr...@hadoop.apache.org For additional commands, e-mail: common-issues-h...@hadoop.apache.org