Steve Loughran created HADOOP-14000:
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             Summary: 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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