[STORM-3131] Support hostname-substitution for blobstore.hdfs.principal

• Type: Improvement
• Status: Resolved
• Priority: Major
• Resolution: Fixed
• Fix Version/s: 2.0.0
• Labels: pull-request-available
• Assignee: Ethan Li
• Reporter: Ethan Li
• Created: 27/Jun/18 21:30
• Updated: 06/Sep/18 17:45
• Resolved: 06/Sep/18 17:44

Description

We can have something like

    public static String getBlobstoreHDFSPrincipal(Map conf) throws UnknownHostException {
        String principal = (String)conf.get(Config.BLOBSTORE_HDFS_PRINCIPAL);
        if (principal != null) {
            principal = principal.replace("HOSTNAME", Utils.localHostname());
        }
        return principal;
    }

So it will be easier to deploy storm. Instead of setting different principal on every node, we can have the same principal headless_user/HOSTNAME@DOMAIN

Issue Links

• links to: GitHub Pull Request #2808