[HDFS-5314] Do not expose CachePool type in AddCachePoolOp

• Type: Sub-task
• Status: Resolved
• Priority: Major
• Resolution: Fixed
• Affects Version/s: HDFS-4949
• Fix Version/s: HDFS-4949
• Component/s: namenode
• Target Version/s: HDFS-4949
• Assignee: Colin McCabe
• Reporter: Colin McCabe
• Created: 07/Oct/13 00:41
• Updated: 07/Oct/13 22:10
• Resolved: 07/Oct/13 22:10

Description

CachePool is an internal type which should not be exposed or used in the FSEditLog. Because CachePool is mutable, storing a reference to it in an edit log operation could lead to the edit log operation changing as a result of the CachePool object being changed. Instead, we should store CachePoolInfo.