[HBASE-5327] Print a message when an invalid hbase.rootdir is passed

• Type: Bug
• Status: Closed
• Priority: Major
• Resolution: Fixed
• Affects Version/s: 0.90.5
• Fix Version/s: 0.90.6, 0.92.1, 0.94.0
• Hadoop Flags: Reviewed
• Assignee: Jimmy Xiang
• Reporter: Jean-Daniel Cryans
• Created: 02/Feb/12 23:16
• Updated: 12/Oct/12 05:34
• Resolved: 14/Feb/12 19:07

Description

As seen on the mailing list: http://comments.gmane.org/gmane.comp.java.hadoop.hbase.user/24124

If hbase.rootdir doesn't specify a folder on hdfs we crash while opening a path to .oldlogs:

2012-02-02 23:07:26,292 FATAL org.apache.hadoop.hbase.master.HMaster: Unhandled exception. Starting shutdown.
java.lang.IllegalArgumentException: java.net.URISyntaxException: Relative path in absolute URI: hdfs://sv4r11s38:9100.oldlogs
        at org.apache.hadoop.fs.Path.initialize(Path.java:148)
        at org.apache.hadoop.fs.Path.<init>(Path.java:71)
        at org.apache.hadoop.fs.Path.<init>(Path.java:50)
        at org.apache.hadoop.hbase.master.MasterFileSystem.<init>(MasterFileSystem.java:112)
        at org.apache.hadoop.hbase.master.HMaster.finishInitialization(HMaster.java:448)
        at org.apache.hadoop.hbase.master.HMaster.run(HMaster.java:326)
        at java.lang.Thread.run(Thread.java:662)
Caused by: java.net.URISyntaxException: Relative path in absolute URI: hdfs://sv4r11s38:9100.oldlogs
        at java.net.URI.checkPath(URI.java:1787)
        at java.net.URI.<init>(URI.java:735)
        at org.apache.hadoop.fs.Path.initialize(Path.java:145)
        ... 6 more

It could also crash anywhere else, this just happens to be the first place we use hbase.rootdir. We need to verify that it's an actual folder.