[jira] [Created] (HADOOP-15888) ITestDynamoDBMetadataStore can leak (large) DDB tables in test failures/timeout

["Steve Loughran (JIRA)" <ji...@apache.org>]

Steve Loughran created HADOOP-15888:
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             Summary: ITestDynamoDBMetadataStore can leak (large) DDB tables in test failures/timeout
                 Key: HADOOP-15888
                 URL: https://issues.apache.org/jira/browse/HADOOP-15888
             Project: Hadoop Common
          Issue Type: Bug
          Components: fs/s3, test
    Affects Versions: 3.1.2
            Reporter: Steve Loughran


This is me doing some backporting of patches from branch-3.2, so it may be an intermediate condition but

# I'd noticed I wasn't actually running ITestDynamoDBMetadataStore
# so I set it up to work with teh right config opts (table and region)
# but the tests were timing out
# looking at DDB tables in the AWS console showed a number of DDB tables "testProvisionTable", "testProvisionTable", created, each with "500 read, 100 write capacity (i.e. ~$50/month)

I haven't replicated this in trunk/branch-3.2 itself, but its clearly dangerous. At the very least, we should have a size of 1 R/W in all creations, so the cost of a test failure is neglible, and then we should document the risk and best practise.

Also: use "s3guard" as the table prefix to make clear its origin




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