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Posted to common-issues@hadoop.apache.org by "Jonathan Eagles (JIRA)" <ji...@apache.org> on 2013/11/22 17:04:36 UTC
[jira] [Moved] (HADOOP-10123) Invalid NaN values in Hadoop REST API
JSON response
[ https://issues.apache.org/jira/browse/HADOOP-10123?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]
Jonathan Eagles moved YARN-691 to HADOOP-10123:
-----------------------------------------------
Component/s: (was: resourcemanager)
Fix Version/s: (was: 2.3.0)
Affects Version/s: (was: 2.0.4-alpha)
(was: 0.23.6)
0.23.6
2.0.4-alpha
Issue Type: Improvement (was: Bug)
Key: HADOOP-10123 (was: YARN-691)
Project: Hadoop Common (was: Hadoop YARN)
> Invalid NaN values in Hadoop REST API JSON response
> ---------------------------------------------------
>
> Key: HADOOP-10123
> URL: https://issues.apache.org/jira/browse/HADOOP-10123
> Project: Hadoop Common
> Issue Type: Improvement
> Affects Versions: 2.0.4-alpha, 0.23.6
> Reporter: Kendall Thrapp
> Assignee: Chen He
> Attachments: Yarn-691.patch
>
>
> I've been occasionally coming across instances where Hadoop's Cluster Applications REST API (http://hadoop.apache.org/docs/r0.23.6/hadoop-yarn/hadoop-yarn-site/ResourceManagerRest.html#Cluster_Applications_API) has returned JSON that PHP's json_decode function failed to parse. I've tracked the syntax error down to the presence of the unquoted word NaN appearing as a value in the JSON. For example:
> "progress":NaN,
> NaN is not part of the JSON spec, so its presence renders the whole JSON string invalid. Hadoop needs to return something other than NaN in this case -- perhaps an empty string or the quoted string "NaN".
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