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https://issues.apache.org/jira/browse/HADOOP-14000?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15901669#comment-15901669
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Steve Loughran commented on HADOOP-14000:
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HADOOP-14159 covers changes into Hadoop's APIs and use thereof to support
millions of files in a directory
> s3guard metadata stores to support millons of children
> ------------------------------------------------------
>
> Key: HADOOP-14000
> URL: https://issues.apache.org/jira/browse/HADOOP-14000
> Project: Hadoop Common
> Issue Type: Sub-task
> Components: fs/s3
> Affects Versions: HADOOP-13345
> Reporter: Steve Loughran
>
> S3 repos can have millions of child entries
> Currently {{DirListingMetaData}} can't and {{MetadataStore.listChildren(Path
> path)}} won't be able to handle directories that big, for listing, deleting
> or naming.
> We will need a paged response from the listing operation, something which can
> be iterated over.
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