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From "Steve Loughran (JIRA)" <j...@apache.org>
Subject [jira] [Updated] (HADOOP-14468) S3Guard: make short-circuit getFileStatus() configurable
Date Fri, 01 Sep 2017 14:27:00 GMT

     [ https://issues.apache.org/jira/browse/HADOOP-14468?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

Steve Loughran updated HADOOP-14468:
------------------------------------
    Parent Issue: HADOOP-14825  (was: HADOOP-13345)

> S3Guard: make short-circuit getFileStatus() configurable
> --------------------------------------------------------
>
>                 Key: HADOOP-14468
>                 URL: https://issues.apache.org/jira/browse/HADOOP-14468
>             Project: Hadoop Common
>          Issue Type: Sub-task
>          Components: fs/s3
>    Affects Versions: 3.0.0-beta1
>            Reporter: Aaron Fabbri
>            Assignee: Aaron Fabbri
>            Priority: Minor
>
> Currently, when S3Guard is enabled, getFileStatus() will skip S3 if it gets a result
from the MetadataStore (e.g. dynamodb) first.
> I would like to add a new parameter {{fs.s3a.metadatastore.getfilestatus.authoritative}}
which, when true, keeps the current behavior.  When false, S3AFileSystem will check both S3
and the MetadataStore.
> I'm not sure yet if we want to have this behavior the same for all callers of getFileStatus(),
or if we only want to check both S3 and MetadataStore for some internal callers such as open().



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