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From "Sean Mackrory (JIRA)" <j...@apache.org>
Subject [jira] [Updated] (HADOOP-14041) CLI command to prune old metadata
Date Tue, 14 Feb 2017 16:46:41 GMT

     [ https://issues.apache.org/jira/browse/HADOOP-14041?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

Sean Mackrory updated HADOOP-14041:
-----------------------------------
    Attachment: HADOOP-14041-HADOOP-13345.004.patch

{quote}Minor nit: I would make sleep happen between batches (not before the first).{quote}

I went with this because the first batch immediately follows a large request, so it would
be appropriate to pause for a breath anyway.

The 25ms delay is entirely arbitrary - if other folks have opinions on a better default, I'd
love to have some reasoning for what we go with. If anything I suspect it should probably
be longer.

Attaching a patch that address all other feedback from [~fabbri]

> CLI command to prune old metadata
> ---------------------------------
>
>                 Key: HADOOP-14041
>                 URL: https://issues.apache.org/jira/browse/HADOOP-14041
>             Project: Hadoop Common
>          Issue Type: Sub-task
>          Components: fs/s3
>            Reporter: Sean Mackrory
>            Assignee: Sean Mackrory
>         Attachments: HADOOP-14041-HADOOP-13345.001.patch, HADOOP-14041-HADOOP-13345.002.patch,
HADOOP-14041-HADOOP-13345.003.patch, HADOOP-14041-HADOOP-13345.004.patch
>
>
> Add a CLI command that allows users to specify an age at which to prune metadata that
hasn't been modified for an extended period of time. Since the primary use-case targeted at
the moment is list consistency, it would make sense (especially when authoritative=false)
to prune metadata that is expected to have become consistent a long time ago.



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