Rajesh Balamohan created HADOOP-13164:
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Summary: Optimize S3AFileSystem::deleteUnnecessaryFakeDirectories
Key: HADOOP-13164
URL: https://issues.apache.org/jira/browse/HADOOP-13164
Project: Hadoop Common
Issue Type: Bug
Components: fs/s3
Reporter: Rajesh Balamohan
https://github.com/apache/hadoop/blob/27c4e90efce04e1b1302f668b5eb22412e00d033/hadoop-tools/hadoop-aws/src/main/java/org/apache/hadoop/fs/s3a/S3AFileSystem.java#L1224
deleteUnnecessaryFakeDirectories is invoked in S3AFileSystem during rename and
on outputstream close() to purge any fake directories. Depending on the nesting
in the folder structure, it might take a lot longer time as it invokes
getFileStatus multiple times. Instead, it should be able to break out of the
loop once a non-empty directory is encountered.
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