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https://issues.apache.org/jira/browse/HADOOP-18954?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]
Bence Kosztolnik updated HADOOP-18954:
--------------------------------------
Description:
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.
was:
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 null values.
> 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.
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