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From "Zhou, Yunqing" <azure...@gmail.com>
Subject hbase installation problem
Date Wed, 29 Oct 2008 17:29:53 GMT
I just deployed hbase 0.2.1 to the existing hadoop 0.17.1.
13 machines, fully distributed

but I found I can't see the Web UI of hbase's master. (http://master:60010)
I checked the log, and master's log shows as follows
2008-10-30 00:56:54,296 INFO org.apache.hadoop.hbase.master.BaseScanner:
RegionManager.rootScanner scanning meta region {regionname: -ROOT-,,0,
startKey: <>, server: 192.168.4.5:60020}
2008-10-30 00:56:54,304 INFO org.apache.hadoop.hbase.master.BaseScanner:
RegionManager.rootScanner scan of meta region {regionname: -ROOT-,,0,
startKey: <>, server: 192.168.4.5:60020} complete
2008-10-30 00:57:30,319 WARN /: /master.jsp:
java.lang.NullPointerException
        at
org.apache.hadoop.hbase.client.ServerCallable.getServerName(ServerCallable.java:63)
        at
org.apache.hadoop.hbase.client.HConnectionManager$TableServers.getRegionServerWithRetries(HConnectionManager.java:879)
        at
org.apache.hadoop.hbase.client.MetaScanner.metaScan(MetaScanner.java:56)
        at
org.apache.hadoop.hbase.client.MetaScanner.metaScan(MetaScanner.java:30)
        at
org.apache.hadoop.hbase.client.HConnectionManager$TableServers.listTables(HConnectionManager.java:308)
        at
org.apache.hadoop.hbase.client.HBaseAdmin.listTables(HBaseAdmin.java:129)
        at
org.apache.hadoop.hbase.generated.master.master_jsp._jspService(master_jsp.java:120)
        at
org.apache.jasper.runtime.HttpJspBase.service(HttpJspBase.java:94)
        at javax.servlet.http.HttpServlet.service(HttpServlet.java:802)
        at
org.mortbay.jetty.servlet.ServletHolder.handle(ServletHolder.java:427)
        at
org.mortbay.jetty.servlet.WebApplicationHandler.dispatch(WebApplicationHandler.java:475)
        at
org.mortbay.jetty.servlet.ServletHandler.handle(ServletHandler.java:567)
        at org.mortbay.http.HttpContext.handle(HttpContext.java:1565)
        at
org.mortbay.jetty.servlet.WebApplicationContext.handle(WebApplicationContext.java:635)
        at org.mortbay.http.HttpContext.handle(HttpContext.java:1517)
        at org.mortbay.http.HttpServer.service(HttpServer.java:954)
        at org.mortbay.http.HttpConnection.service(HttpConnection.java:814)
        at
org.mortbay.http.HttpConnection.handleNext(HttpConnection.java:981)
        at org.mortbay.http.HttpConnection.handle(HttpConnection.java:831)
        at
org.mortbay.http.SocketListener.handleConnection(SocketListener.java:244)
        at org.mortbay.util.ThreadedServer.handle(ThreadedServer.java:357)
        at org.mortbay.util.ThreadPool$PoolThread.run(ThreadPool.java:534)
2008-10-30 00:57:48,409 INFO org.apache.hadoop.hbase.master.BaseScanner: all
meta regions scanned
has anyone met the same question before?

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