[jira] Created: (HBASE-2750) Add sanity check for system configs in hbase-daemon wrapper

["Todd Lipcon (JIRA)" <ji...@apache.org>]

Add sanity check for system configs in hbase-daemon wrapper
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                 Key: HBASE-2750
                 URL: https://issues.apache.org/jira/browse/HBASE-2750
             Project: HBase
          Issue Type: New Feature
          Components: scripts
    Affects Versions: 0.21.0
            Reporter: Todd Lipcon
            Assignee: Todd Lipcon
            Priority: Minor


We should add a config variable like MIN_ULIMIT_TO_START in hbase-env.sh. If the daemon script finds ulimit < this value, it will print a warning and refuse to start. We can make the default set to 0 so that this doesn't affect non-production clusters, but in the tuning guide recommend that people change it to the expected ulimit.

(I've seen it happen all the time where people configure ulimit on some nodes, add a new node to the cluster, and forgot to re-tune it on the new one, and then that new one borks the whole cluster when it joins)

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