[HDFS-10925] Cache symlinkString in INodeSymlink

• Type: Sub-task
• Status: Patch Available
• Priority: Minor
• Resolution: Unresolved
• Component/s: hdfs
• Assignee: Yiqun Lin
• Reporter: Yiqun Lin
• Created: 29/Sep/16 07:44
• Updated: 12/Oct/16 17:03

Description

In INodeSymlink's construct method, it will transfer the input symlink string to a byte array. If we want to invoke INodeSymlink#getSymlinkString, it will transfer the byte array to the string again. Since we don't cache symlinkString here, it will do the DFSUtil.bytes2String method every time. It seems not efficient.