[jira] [Created] (HADOOP-15988) Set empty directory flag to TRUE in DynamoDBMetadataStore#innerGet when using authoritative mode

["Gabor Bota (JIRA)" <ji...@apache.org>]

Gabor Bota created HADOOP-15988:
-----------------------------------

             Summary: Set empty directory flag to TRUE in DynamoDBMetadataStore#innerGet when using authoritative mode
                 Key: HADOOP-15988
                 URL: https://issues.apache.org/jira/browse/HADOOP-15988
             Project: Hadoop Common
          Issue Type: Sub-task
          Components: fs/s3
    Affects Versions: 3.1.0
            Reporter: Gabor Bota
            Assignee: Gabor Bota


We have the following comment and implementation in DynamoDBMetadataStore:
{noformat}
        // When this class has support for authoritative
        // (fully-cached) directory listings, we may also be able to answer
        // TRUE here.  Until then, we don't know if we have full listing or
        // not, thus the UNKNOWN here:
        meta.setIsEmptyDirectory(
            hasChildren ? Tristate.FALSE : Tristate.UNKNOWN);
{noformat}

We have authoritative listings now in dynamo since HADOOP-15621, so we should resolve this comment, implement the solution and test it. 



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