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From Bharat Shetty <bharat.she...@gmail.com>
Subject HMaster daemon is not starting up
Date Fri, 22 Nov 2013 06:50:07 GMT
Hi all,

I've been running into an error of late whose root cause I'm not able to
decipher. Before this I had been able to run HBase on top of HDFS without
any issues. Suddenly HMaster shut down one day and when I try to restart
I'm unable to start the HMaster daemon.

Could you please guide if there is something that I might be missing.

>From the logs:
vim hbase-iouser-master-naples.log


2013-11-22 09:50:27,096 ERROR [main] master.HMasterCommandLine: Master
exiting
java.lang.RuntimeException: Failed construction of Master: class
org.apache.hadoop.hbase.master.HMaster
        at
org.apache.hadoop.hbase.master.HMaster.constructMaster(HMaster.java:2773)
        at
org.apache.hadoop.hbase.master.HMasterCommandLine.startMaster(HMasterCommandLine.java:184)
        at
org.apache.hadoop.hbase.master.HMasterCommandLine.run(HMasterCommandLine.java:134)
        at org.apache.hadoop.util.ToolRunner.run(ToolRunner.java:70)
        at
org.apache.hadoop.hbase.util.ServerCommandLine.doMain(ServerCommandLine.java:126)
        at org.apache.hadoop.hbase.master.HMaster.main(HMaster.java:2787)
Caused by: java.lang.UnsupportedOperationException: Not implemented by the
DistributedFileSystem FileSystem implementation
        at org.apache.hadoop.fs.FileSystem.getScheme(FileSystem.java:209)
        at
org.apache.hadoop.fs.FileSystem.loadFileSystems(FileSystem.java:2397)
        at
org.apache.hadoop.fs.FileSystem.getFileSystemClass(FileSystem.java:2407)
        at
org.apache.hadoop.fs.FileSystem.createFileSystem(FileSystem.java:2424)
        at org.apache.hadoop.fs.FileSystem.access$200(FileSystem.java:88)
        at
org.apache.hadoop.fs.FileSystem$Cache.getInternal(FileSystem.java:2463)
        at org.apache.hadoop.fs.FileSystem$Cache.get(FileSystem.java:2445)
        at org.apache.hadoop.fs.FileSystem.get(FileSystem.java:363)
        at org.apache.hadoop.fs.Path.getFileSystem(Path.java:275)
        at org.apache.hadoop.hbase.util.FSUtils.getRootDir(FSUtils.java:884)
        at org.apache.hadoop.hbase.master.HMaster.<init>(HMaster.java:455)
        at sun.reflect.NativeConstructorAccessorImpl.newInstance0(Native
Method)
        at
sun.reflect.NativeConstructorAccessorImpl.newInstance(NativeConstructorAccessorImpl.java:57)
        at
sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45)
        at java.lang.reflect.Constructor.newInstance(Constructor.java:532)
        at
org.apache.hadoop.hbase.master.HMaster.constructMaster(HMaster.java:2768)

From: hbase-iouser-regionserver-naples.log

2013-11-22 09:50:28,150 ERROR [main] regionserver.HRegionServerCommandLine:
Region server exiting
java.lang.UnsupportedOperationException: Not implemented by the
DistributedFileSystem FileSystem implementation
        at org.apache.hadoop.fs.FileSystem.getScheme(FileSystem.java:209)
        at
org.apache.hadoop.fs.FileSystem.loadFileSystems(FileSystem.java:2397)
        at
org.apache.hadoop.fs.FileSystem.getFileSystemClass(FileSystem.java:2407)
        at
org.apache.hadoop.fs.FileSystem.createFileSystem(FileSystem.java:2424)
        at org.apache.hadoop.fs.FileSystem.access$200(FileSystem.java:88)
        at
org.apache.hadoop.fs.FileSystem$Cache.getInternal(FileSystem.java:2463)
        at org.apache.hadoop.fs.FileSystem$Cache.get(FileSystem.java:2445)
        at org.apache.hadoop.fs.FileSystem.get(FileSystem.java:363)
        at org.apache.hadoop.fs.FileSystem.get(FileSystem.java:165)
        at
org.apache.hadoop.hbase.regionserver.HRegionServer.startRegionServer(HRegionServer.java:2276)
        at
org.apache.hadoop.hbase.regionserver.HRegionServer.startRegionServer(HRegionServer.java:2260)
        at
org.apache.hadoop.hbase.regionserver.HRegionServerCommandLine.start(HRegionServerCommandLine.java:62)
        at
org.apache.hadoop.hbase.regionserver.HRegionServerCommandLine.run(HRegionServerCommandLine.java:85)
        at org.apache.hadoop.util.ToolRunner.run(ToolRunner.java:70)
        at
org.apache.hadoop.hbase.util.ServerCommandLine.doMain(ServerCommandLine.java:126)
        at
org.apache.hadoop.hbase.regionserver.HRegionServer.main(HRegionServer.java:2311)
~
Regards,

- Bharat

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