Steve Loughran created HADOOP-13904:
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Summary: DynamoDBMetadataStore to handle DDB throttling failures
through retry policy
Key: HADOOP-13904
URL: https://issues.apache.org/jira/browse/HADOOP-13904
Project: Hadoop Common
Issue Type: Sub-task
Components: fs/s3
Affects Versions: HADOOP-13345
Reporter: Steve Loughran
When you overload DDB, you get error messages warning of throttling, [as
documented by
AWS|http://docs.aws.amazon.com/amazondynamodb/latest/developerguide/Programming.Errors.html#Programming.Errors.MessagesAndCodes]
Reduce load on DDB by doing a table lookup before the create, then, in table
create/delete operations and in get/put actions, recognise the error codes and
retry using an appropriate retry policy (exponential backoff + ultimate
failure)
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