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https://issues.apache.org/jira/browse/HADOOP-14756?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16150551#comment-16150551
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Steve Loughran commented on HADOOP-14756:
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the new getDiagnostics() call in HADOOP-14220 provides a string -> string map
of diagnostics info to callers; I'm already using this for the functional tests
of set-capacity by having standard name for read-capacity and write-capacity.
Authoritative -> bool would be another field and used the same way...no need to
put in another method
> S3Guard: expose capability query in MetadataStore and add tests of
> authoritative mode
> -------------------------------------------------------------------------------------
>
> 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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