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https://issues.apache.org/jira/browse/HADOOP-15563?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Steve Loughran updated HADOOP-15563:
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Summary: S3Guard to support creating on-demand DDB tables (was: Full
S3Guard Support for on-demand DDB tables)
> S3Guard to support creating on-demand DDB tables
> ------------------------------------------------
>
> Key: HADOOP-15563
> URL: https://issues.apache.org/jira/browse/HADOOP-15563
> Project: Hadoop Common
> Issue Type: Sub-task
> Components: fs/s3
> Affects Versions: 3.1.0
> Reporter: Steve Loughran
> Assignee: Steve Loughran
> Priority: Major
>
> To keep costs down on DDB, autoscaling is a key feature: you set the max
> values and when idle, you don't get billed, *at the cost of delayed scale
> time and risk of not getting the max value when AWS is busy*
> It can be done from the AWS web UI, but not in the s3guard init and
> set-capacity calls
> It can be done [through the
> API|https://docs.aws.amazon.com/amazondynamodb/latest/developerguide/AutoScaling.HowTo.SDK.html]
> Usual issues then: wiring up, CLI params, testing. It'll be hard to test.
> Fully support On-demand DDB tables in S3Guard
> * create (0, 0) will create an on-demand table.
> * set capacity (0, 0) will create an on-demand table.
> * once a table is on demand, any set capacity command other than to (0, 0)
> will then fail.
> * when loading table, note if it is on-demand or not
> * if on demand, prune() doesn't bother to throttle requests any more by
> sleeping.
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