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https://issues.apache.org/jira/browse/HADOOP-17275?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17264905#comment-17264905
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Steve Loughran commented on HADOOP-17275:
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+feed in to an incremental LocatedStatusFetcher
> Implement Incremental globStatus() -> RemoteIterator class
> ----------------------------------------------------------
>
> Key: HADOOP-17275
> URL: https://issues.apache.org/jira/browse/HADOOP-17275
> Project: Hadoop Common
> Issue Type: Sub-task
> Components: fs
> Affects Versions: 3.3.0
> Reporter: Steve Loughran
> Priority: Major
>
> globStatus/globber is inefficient, not incremental and doesn't provide a way
> to query any IOStatistics.
> Proposed:
> * new IncrementalGlobber class which takes an interface to the file source
> (+impls for FS and FC) which offer the incremental ops
> * use incremental listStatusIncremental calls
> * or, if no wildcards, full deep listFiles(recursive)
> * collect IOStatistics from source ops, aggregate and serve
> Potentially a lot of work...need to look carefully here
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