[HDFS-5845] SecondaryNameNode dies when checkpointing with cache pools

• Type: Bug
• Status: Closed
• Priority: Blocker
• Resolution: Fixed
• Affects Version/s: 2.3.0
• Fix Version/s: 2.3.0
• Component/s: namenode
• Labels: caching
• Assignee: Andrew Wang
• Reporter: Andrew Wang
• Created: 28/Jan/14 23:50
• Updated: 24/Feb/14 20:57
• Resolved: 30/Jan/14 00:01

Description

The SecondaryNameNode clears and reloads its FSNamesystem when doing checkpointing. However, FSNamesystem#clear does not clear CacheManager state during this reload. This leads to an error like the following:

org.apache.hadoop.fs.InvalidRequestException: Cache pool pool1 already exists.