[HDFS-2861] HA: checkpointing should verify that the dfs.http.address has been configured to a non-loopback for peer NN

• Type: Sub-task
• Status: Resolved
• Priority: Critical
• Resolution: Fixed
• Affects Version/s: HA branch (HDFS-1623)
• Fix Version/s: HA branch (HDFS-1623)
• Component/s: ha, namenode
• Target Version/s: HA branch (HDFS-1623)
• Hadoop Flags: Reviewed
• Assignee: Todd Lipcon
• Reporter: Todd Lipcon
• Created: 31/Jan/12 05:34
• Updated: 03/Feb/12 12:59
• Resolved: 02/Feb/12 22:22

Description

In an HA setup I was running for the past week, I just noticed that checkpoints weren't getting properly uploaded, since the SBN was connecting to http://0.0.0.0:50070/ rather than the correct dfs.http.address. So, it was uploading checkpoints to itself instead of the peer. We should add sanity checks during startup to ensure that the configuration is correct.