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https://issues.apache.org/jira/browse/CRUNCH-683?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16823308#comment-16823308
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Jon Hemphill commented on CRUNCH-683:
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PR is available here: [https://github.com/apache/crunch/pull/23]
> Avoid unnecessary listStatus calls from getSize computation
> -----------------------------------------------------------
>
> Key: CRUNCH-683
> URL: https://issues.apache.org/jira/browse/CRUNCH-683
> Project: Crunch
> Issue Type: Improvement
> Components: Core
> Affects Versions: 0.14.0
> Reporter: Jon Hemphill
> Assignee: Josh Wills
> Priority: Major
> Time Spent: 10m
> Remaining Estimate: 0h
>
> The getPathSize computation in SourceTargetHelper currently makes unnecessary
> listStatus calls when recursing over a directory, which can cause performance
> issues when the filesystem is an object store such as S3. The performance can
> be improved with the addition of a private method to use for the getPathSize
> recursion that takes a known FIleStatus object as a parameter.
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