[HADOOP-8306] ZKFC: improve error message when ZK is not running

• Type: Improvement
• Status: Resolved
• Priority: Minor
• Resolution: Fixed
• Affects Version/s: Auto Failover (HDFS-3042)
• Fix Version/s: Auto Failover (HDFS-3042)
• Component/s: auto-failover, ha
• Target Version/s: Auto Failover (HDFS-3042)
• Hadoop Flags: Reviewed
• Assignee: Todd Lipcon
• Reporter: Todd Lipcon
• Created: 23/Apr/12 19:17
• Updated: 24/Apr/12 19:35
• Resolved: 24/Apr/12 19:35

Description

Currently if you start the ZKFC without starting ZK, you get an ugly stack trace. We should improve the error message and give it a unique exit code.