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Posted to common-dev@hadoop.apache.org by "Steve Loughran (Jira)" <ji...@apache.org> on 2021/01/26 16:24:01 UTC

[jira] [Resolved] (HADOOP-15834) Improve throttling on S3Guard DDB batch retries

     [ https://issues.apache.org/jira/browse/HADOOP-15834?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Steve Loughran resolved HADOOP-15834.
-------------------------------------
    Resolution: Won't Fix

> Improve throttling on S3Guard DDB batch retries
> -----------------------------------------------
>
>                 Key: HADOOP-15834
>                 URL: https://issues.apache.org/jira/browse/HADOOP-15834
>             Project: Hadoop Common
>          Issue Type: Sub-task
>          Components: fs/s3
>    Affects Versions: 3.2.0
>            Reporter: Steve Loughran
>            Priority: Minor
>
> the batch throttling may fail too fast 
> if there's batch update of 25 writes but the default retry count is nine attempts, only nine writes of the batch may be attempted...even if each attempt is actually successfully writing data.
> In contrast, a single write of a piece of data gets the same no. of attempts, so 25 individual writes can handle a lot more throttling than a bulk write.
> Proposed: retry logic to be more forgiving of batch writes, such as not consider a batch call where at least one data item was written to count as a failure



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