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From "Aaron Fabbri (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (HADOOP-14756) S3Guard: instrument MetadataStore for asserting & testing MetadataStoreTestBase
Date Fri, 11 Aug 2017 20:33:00 GMT

    [ https://issues.apache.org/jira/browse/HADOOP-14756?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16123991#comment-16123991
] 

Aaron Fabbri commented on HADOOP-14756:
---------------------------------------

Thanks for filing this.  FYI I wrote #3 in the code comments during early S3Guard development.
 I don't think we need it anymore since we can set the isAuthoritative (fully cached directory)
bit in the DirListingMetadata instead.

Might tweak the title here a bit to capture my original intent better.

> S3Guard: instrument MetadataStore for asserting & testing MetadataStoreTestBase
> -------------------------------------------------------------------------------
>
>                 Key: HADOOP-14756
>                 URL: https://issues.apache.org/jira/browse/HADOOP-14756
>             Project: Hadoop Common
>          Issue Type: Sub-task
>          Components: fs/s3
>    Affects Versions: HADOOP-13345
>            Reporter: Steve Loughran
>             Fix For: HADOOP-13345
>
>
> {{MetadataStoreTestBase.testListChildren}} would be improved with the ability to query
the features offered by the store, and the outcome of {{put()}}, so probe the correctness
of the authoritative mode
> # Add predicate to MetadataStore interface  {{supportsAuthoritativeDirectories()}} or
similar
> # If #1 is true, assert that directory is fully cached after changes
> # Add "isNew" flag to MetadataStore.put(DirListingMetadata); use to verify when changes
are made



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