[HBASE-1706] META row with missing HRI breaks UI

• Type: Bug
• Status: Closed
• Priority: Critical
• Resolution: Fixed
• Fix Version/s: 0.20.0
• Hadoop Flags: Reviewed
• Assignee: Andrew Kyle Purtell
• Reporter: Andrew Kyle Purtell
• Created: 26/Jul/09 06:04
• Updated: 13/Sep/09 22:24
• Resolved: 26/Jul/09 23:09

Description

Seeing this in the master log:

2009-07-26 06:01:55,373 WARN org.apache.hadoop.hbase.master.BaseScanner: Found 1 rows with empty HRegionInfo while scanning meta region .META.,,1
2009-07-26 06:01:55,373 WARN org.apache.hadoop.hbase.master.HMaster: Removed region: content,9e1f3dbffe50886f56d67044ca7177e,1248262776854 from meta region: .META.,,1 because HRegionInfo was empty

Seeing this on the master UI (http://test:60010/master.jsp):

HTTP ERROR: 500

INTERNAL_SERVER_ERROR

RequestURI=/master.jsp
Caused by:

java.lang.NullPointerException
at org.apache.hadoop.hbase.util.Writables.getWritable(Writables.java:74)
at org.apache.hadoop.hbase.util.Writables.getHRegionInfo(Writables.java:118)
at org.apache.hadoop.hbase.client.HConnectionManager$TableServers$1.processRow(HConnectionManager.java:356)
at org.apache.hadoop.hbase.client.MetaScanner.metaScan(MetaScanner.java:63)
at org.apache.hadoop.hbase.client.MetaScanner.metaScan(MetaScanner.java:28)
at org.apache.hadoop.hbase.client.HConnectionManager$TableServers.listTables(HConnectionManager.java:369)
at org.apache.hadoop.hbase.client.HBaseAdmin.listTables(HBaseAdmin.java:127)
at org.apache.hadoop.hbase.generated.master.master_jsp._jspService(master_jsp.java:125)
at org.apache.jasper.runtime.HttpJspBase.service(HttpJspBase.java:97)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:820)
at org.mortbay.jetty.servlet.ServletHolder.handle(ServletHolder.java:502)
at org.mortbay.jetty.servlet.ServletHandler.handle(ServletHandler.java:363)
at org.mortbay.jetty.security.SecurityHandler.handle(SecurityHandler.java:216)
at org.mortbay.jetty.servlet.SessionHandler.handle(SessionHandler.java:181)
at org.mortbay.jetty.handler.ContextHandler.handle(ContextHandler.java:766)
at org.mortbay.jetty.webapp.WebAppContext.handle(WebAppContext.java:417)
at org.mortbay.jetty.handler.ContextHandlerCollection.handle(ContextHandlerCollection.java:230)
at org.mortbay.jetty.handler.HandlerWrapper.handle(HandlerWrapper.java:152)
at org.mortbay.jetty.Server.handle(Server.java:324)
at org.mortbay.jetty.HttpConnection.handleRequest(HttpConnection.java:534)
at org.mortbay.jetty.HttpConnection$RequestHandler.headerComplete(HttpConnection.java:864)
at org.mortbay.jetty.HttpParser.parseNext(HttpParser.java:533)
at org.mortbay.jetty.HttpParser.parseAvailable(HttpParser.java:207)
at org.mortbay.jetty.HttpConnection.handle(HttpConnection.java:403)
at org.mortbay.io.nio.SelectChannelEndPoint.run(SelectChannelEndPoint.java:409)
at org.mortbay.thread.QueuedThreadPool$PoolThread.run(QueuedThreadPool.java:522)

Issue Links

• is part of: HBASE-1716 values stored into the wrong store