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https://issues.apache.org/jira/browse/HADOOP-13140?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15282579#comment-15282579
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Steve Loughran commented on HADOOP-13140:
-----------------------------------------
It's probably something just done in tests. Why not have a special schema for
those without schemas, say "schemaless" which they can all share?
> GlobalStorageStatistics should check null FileSystem scheme to avoid NPE
> ------------------------------------------------------------------------
>
> Key: HADOOP-13140
> URL: https://issues.apache.org/jira/browse/HADOOP-13140
> Project: Hadoop Common
> Issue Type: Bug
> Components: fs
> Affects Versions: 2.8.0
> Reporter: Brahma Reddy Battula
> Assignee: Mingliang Liu
> Attachments: HADOOP-13140.000.patch
>
>
> {{org.apache.hadoop.fs.GlobalStorageStatistics#put}} is not checking the null
> scheme, and the internal map will complain NPE. This was reported by a flaky
> test {{TestFileSystemApplicationHistoryStore}}. Thanks [~brahmareddy] for
> reporting.
> To address this,
> # Fix the test by providing a valid URI, e.g. {{file:///}}
> # Guard the null scheme in {{GlobalStorageStatistics#put}}
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