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From "Gabor Bota (Jira)" <j...@apache.org>
Subject [jira] [Commented] (HADOOP-16349) DynamoDBMetadataStore.getVersionMarkerItem() to log at info/warn on retry
Date Tue, 01 Oct 2019 17:13:00 GMT

    [ https://issues.apache.org/jira/browse/HADOOP-16349?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16942161#comment-16942161
] 

Gabor Bota commented on HADOOP-16349:
-------------------------------------

I'm going to fix this with  HADOOP-16520 

> DynamoDBMetadataStore.getVersionMarkerItem() to log at info/warn on retry
> -------------------------------------------------------------------------
>
>                 Key: HADOOP-16349
>                 URL: https://issues.apache.org/jira/browse/HADOOP-16349
>             Project: Hadoop Common
>          Issue Type: Sub-task
>          Components: fs/s3
>    Affects Versions: 3.2.0
>            Reporter: Steve Loughran
>            Assignee: Gabor Bota
>            Priority: Major
>
> If you delete the version marker from a S3Guard table, it appears to hang for 5 minutes.
> Only if you restart and turn logging to debug do you see that {{DynamoDBMetadataStore.getVersionMarkerItem()}}
is sleeping and retrying.
> # log at warn
> # add entry to troubleshooting doc on the topic
> The cause of the failure can be any of
> * table being inited elsewhere: expectation, fast recovery
> * it's not a S3Guard table: it won't recover
> * it's a S3Guard table without a version marker: it won't recover.
> + consider having a shorter retry lifespan, though if it adds a new config point I'm
a bit reluctant. For s3guard bucket-info it would make sense to change the policy to be aggressively
short lived



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