[jira] [Created] (HBASE-4300) Start of new-version master fails if old master's znode is hanging around

[Todd Lipcon (JIRA)]

Start of new-version master fails if old master's znode is hanging around
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                 Key: HBASE-4300
                 URL: https://issues.apache.org/jira/browse/HBASE-4300
             Project: HBase
          Issue Type: Bug
    Affects Versions: 0.92.0
            Reporter: Todd Lipcon
            Priority: Critical
             Fix For: 0.92.0


I shut down an 0.90 cluster, and had to do so uncleanly. I then started a trunk 
(0.92) cluster before the old master znode had expired. This cased:

java.lang.StringIndexOutOfBoundsException: String index out of range: -1
        at java.lang.String.substring(String.java:1937)
        at org.apache.hadoop.hbase.ServerName.parseHostname(ServerName.java:81)
        at org.apache.hadoop.hbase.ServerName.<init>(ServerName.java:63)
        at 
org.apache.hadoop.hbase.master.ActiveMasterManager.blockUntilBecomingActiveMaster(ActiveMasterManager.java:148)
        at 
org.apache.hadoop.hbase.master.HMaster.becomeActiveMaster(HMaster.java:342)
        at org.apache.hadoop.hbase.master.HMaster.run(HMaster.java:297)


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