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From "Gabor Bota (JIRA)" <j...@apache.org>
Subject [jira] [Updated] (HADOOP-13649) s3guard: implement time-based (TTL) expiry for LocalMetadataStore
Date Mon, 07 May 2018 08:28:00 GMT

     [ https://issues.apache.org/jira/browse/HADOOP-13649?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

Gabor Bota updated HADOOP-13649:
--------------------------------
    Attachment: HADOOP-13649.002.patch

> s3guard: implement time-based (TTL) expiry for LocalMetadataStore
> -----------------------------------------------------------------
>
>                 Key: HADOOP-13649
>                 URL: https://issues.apache.org/jira/browse/HADOOP-13649
>             Project: Hadoop Common
>          Issue Type: Sub-task
>          Components: fs/s3
>    Affects Versions: 3.0.0-beta1
>            Reporter: Aaron Fabbri
>            Assignee: Gabor Bota
>            Priority: Minor
>         Attachments: HADOOP-13649.001.patch, HADOOP-13649.002.patch
>
>
> LocalMetadataStore is primarily a reference implementation for testing.  It may be useful
in narrow circumstances where the workload can tolerate short-term lack of inter-node consistency:
 Being in-memory, one JVM/node's LocalMetadataStore will not see another node's changes to
the underlying filesystem.
> To put a bound on the time during which this inconsistency may occur, we should implement
time-based (a.k.a. Time To Live / TTL)  expiration for LocalMetadataStore



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