[HDFS-10555] Unable to loadFSEdits due to a failure in readCachePoolInfo

• Type: Bug
• Status: Resolved
• Priority: Critical
• Resolution: Fixed
• Affects Version/s: 2.9.0
• Fix Version/s: 2.9.0, 3.0.0-alpha1
• Component/s: caching, namenode
• Hadoop Flags: Reviewed
• Assignee: Uma Maheswara Rao G
• Reporter: Uma Maheswara Rao G
• Created: 22/Jun/16 00:43
• Updated: 30/Aug/16 01:14
• Resolved: 23/Jun/16 14:20

Description

Recently some tests are failing and unable to loadFSEdits due to a failure in readCachePoolInfo.
Here in below code
FSImageSerialization.java

  }
    if ((flags & ~0x2F) != 0) {
      throw new IOException("Unknown flag in CachePoolInfo: " + flags);
    }

When all values of CachePool variable set to true, flags value & ~0x2F turns out to non zero value. So, this condition failing due to the addition of 0x20 and changing &ing value from ~0x1F to ~0x2F.
May be to fix this issue, we may can change multiply value to ~0x3F

Issue Links

• is broken by: HDFS-10328 Add per-cache-pool default replication num configuration