Mingliang Liu created HADOOP-14226:
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Summary: S3Guard: ITestDynamoDBMetadataStoreScale is not cleaning
up test data
Key: HADOOP-14226
URL: https://issues.apache.org/jira/browse/HADOOP-14226
Project: Hadoop Common
Issue Type: Sub-task
Components: fs/s3
Affects Versions: HADOOP-13345
Reporter: Mingliang Liu
Assignee: Mingliang Liu
After running {{ITestDynamoDBMetadataStoreScale}}, the test data is not cleaned
up. There is a call to {{clearMetadataStore(ms, count);}} in the finally clause
though. The reason is that, the internally called method
{{DynamoDBMetadataStore::deleteSubtree()}} is assuming there should be an item
for the parent dest path:
{code}
parent=/fake-bucket, child=moved-here, is_dir=true
{code}
In DynamoDBMetadataStore implementation, we assume that _if a path exists, all
its ancestors will also exist in the table_. We need to pre-create dest path to
maintain this invariant so that test data can be cleaned up successfully.
I think there may be other tests with the same problem. Let's identify/address
them separately.
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