[HDFS-3202] NamespaceInfo PB translation drops build version

• Type: Bug
• Status: Closed
• Priority: Major
• Resolution: Fixed
• Affects Version/s: 2.0.0-alpha
• Fix Version/s: 2.0.0-alpha
• Component/s: datanode
• Target Version/s: 2.0.0-alpha
• Hadoop Flags: Reviewed
• Assignee: Aaron Myers
• Reporter: Aaron Myers
• Created: 05/Apr/12 01:29
• Updated: 28/Sep/15 20:58
• Resolved: 05/Apr/12 17:23

Description

The PBHelper#convert(NamespaceInfoProto) function doesn't pass the build version from the NamespaceInfoProto to the created NamespaceInfo object. Instead, the NamespaceInfo constructor gets the build version using the static function Storage#getBuildVersion. DNs also use this static function to determine their own build version. This means that the check the DN does to compare its own build version to that of the NN always passes, regardless of what build version exists on the NN.

Issue Links

• blocks: HDFS-2983 Relax the build version check to permit rolling upgrades within a release