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From "Aaron Fabbri (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (HADOOP-15426) Make S3guard client resilient to DDB throttle events and network failures
Date Thu, 26 Jul 2018 21:39:00 GMT

    [ https://issues.apache.org/jira/browse/HADOOP-15426?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16558924#comment-16558924
] 

Aaron Fabbri commented on HADOOP-15426:
---------------------------------------

This sounds right based on the testing I did in the past.  I was never successful exhausting
the SDK retries (they never surfaced to S3A except in the batched write "unprocessed items"
code IIRC).  The DDB MS scale test I added should be useful for reproducing this.

> Make S3guard client resilient to DDB throttle events and network failures
> -------------------------------------------------------------------------
>
>                 Key: HADOOP-15426
>                 URL: https://issues.apache.org/jira/browse/HADOOP-15426
>             Project: Hadoop Common
>          Issue Type: Sub-task
>          Components: fs/s3
>    Affects Versions: 3.1.0
>            Reporter: Steve Loughran
>            Assignee: Steve Loughran
>            Priority: Major
>         Attachments: HADOOP-15426-001.patch, Screen Shot 2018-07-24 at 15.16.46.png,
Screen Shot 2018-07-25 at 16.22.10.png, Screen Shot 2018-07-25 at 16.28.53.png
>
>
> managed to create on a parallel test run
> {code}
> org.apache.hadoop.fs.s3a.AWSServiceThrottledException: delete on s3a://hwdev-steve-ireland-new/fork-0005/test/existing-dir/existing-file:
com.amazonaws.services.dynamodbv2.model.ProvisionedThroughputExceededException: The level
of configured provisioned throughput for the table was exceeded. Consider increasing your
provisioning level with the UpdateTable API. (Service: AmazonDynamoDBv2; Status Code: 400;
Error Code: ProvisionedThroughputExceededException; Request ID: RDM3370REDBBJQ0SLCLOFC8G43VV4KQNSO5AEMVJF66Q9ASUAAJG):
The level of configured provisioned throughput for the table was exceeded. Consider increasing
your provisioning level with the UpdateTable API. (Service: AmazonDynamoDBv2; Status Code:
400; Error Code: ProvisionedThroughputExceededException; Request ID: RDM3370REDBBJQ0SLCLOFC8G43VV4KQNSO5AEMVJF66Q9ASUAAJG)
> 	at 
> {code}
> We should be able to handle this. 400 "bad things happened" error though, not the 503
from S3.
> h3. We need a retry handler for DDB throttle operations



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