[HADOOP-2634] Deprecate exists() and isDir() to simplify ClientProtocol.

• Type: Improvement
• Status: Closed
• Priority: Blocker
• Resolution: Fixed
• Affects Version/s: 0.15.0
• Fix Version/s: 0.17.0
• Hadoop Flags: Incompatible change, Reviewed
• Release Note: Deprecates exists() from ClientProtocol
• Assignee: Lohit Vijaya Renu
• Reporter: Konstantin Shvachko
• Created: 17/Jan/08 03:34
• Updated: 08/Jul/09 16:42
• Resolved: 03/Apr/08 04:25

Description

ClientProtocol can be simplified by removing two methods

public boolean exists(String src) throws IOException;
public boolean isDir(String src) throws IOException;

This is a redundant api, which can be implemented in DFSClient as convenience methods using

public DFSFileInfo getFileInfo(String src) throws IOException;

Note that we already deprecated several Filesystem method and advised to use getFileStatus() instead.
Should we deprecate them in 0.16?

Issue Links

• duplicates: HADOOP-2470 Open and isDir should be removed from ClientProtocol
• is related to: HADOOP-2566 need FileSystem#globStatus method
• relates to: HADOOP-3160 remove exists() from ClientProtocol and NameNode