Add a simple sanity check for HA config ---------------------------------------
Key: HDFS-2820 URL: https://issues.apache.org/jira/browse/HDFS-2820 Project: Hadoop HDFS Issue Type: Sub-task Components: ha, name-node Affects Versions: HA branch (HDFS-1623) Reporter: Todd Lipcon Assignee: Todd Lipcon Priority: Trivial If the user configures a shared edits dir, but doesn't configure the namenode addresses correctly, the NN will fail to start up in a very strange way. I had this misconfiguration in one of my test clusters which was difficult to debug, even though I'm very familiar with the code. This patch is to add a simple sanity check so that if a user has the same misconfiguration, it will fail to start and given a more informative dump. -- This message is automatically generated by JIRA. If you think it was sent incorrectly, please contact your JIRA administrators: https://issues.apache.org/jira/secure/ContactAdministrators!default.jspa For more information on JIRA, see: http://www.atlassian.com/software/jira