Adding a util method in FileUtil for directory listing
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Key: HADOOP-7322
URL: https://issues.apache.org/jira/browse/HADOOP-7322
Project: Hadoop Common
Issue Type: Bug
Reporter: Bharath Mundlapudi
Assignee: Bharath Mundlapudi
Priority: Minor
Fix For: 0.23.0
While testing Disk Fail Inplace, we encountered lots of NPE from Dir.listFiles
API. This API can return null when Dir is not directory or disk is bad. I am
proposing to have a File Util which can be used consistently across to deal
with disk issues. This util api will do the following:
1. When error happens it will throw IOException
2. Else it will return empty list or list of files.
Signature:
File[] FileUtil.listFiles(File dir) throws IOException {}
This way we no need to write wrapper code every where. Also, API is consistent
with the signature.
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