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https://issues.apache.org/jira/browse/HBASE-3258?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12935009#action_12935009
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stack commented on HBASE-3258:
------------------------------
+1 J-D.
I made HBASE-3270 to accomodate Todd's sensible suggestion above.
> EOF when version file is empty
> ------------------------------
>
> Key: HBASE-3258
> URL: https://issues.apache.org/jira/browse/HBASE-3258
> Project: HBase
> Issue Type: Bug
> Reporter: Jean-Daniel Cryans
> Assignee: Jean-Daniel Cryans
> Priority: Blocker
> Fix For: 0.90.0, 0.92.0
>
> Attachments: HBASE-3258.patch
>
>
> I somehow was able to get an empty hbase.version file on a test machine and
> when I start HBase I see:
> {noformat}
> starting master, logging to
> /data/jdcryans/git/hbase/bin/../logs/hbase-jdcryans-master-hbasedev.out
> Exception in thread "master-hbasedev:60000" java.lang.NullPointerException
> at
> org.apache.hadoop.hbase.master.HMaster.stopServiceThreads(HMaster.java:559)
> at org.apache.hadoop.hbase.master.HMaster.run(HMaster.java:286)
> {noformat}
> And in the master's log:
> {noformat}
> 2010-11-22 10:08:43,003 FATAL org.apache.hadoop.hbase.master.HMaster:
> Unhandled exception. Starting shutdown.
> java.io.EOFException
> at java.io.DataInputStream.readUnsignedShort(DataInputStream.java:323)
> at java.io.DataInputStream.readUTF(DataInputStream.java:572)
> at org.apache.hadoop.hbase.util.FSUtils.getVersion(FSUtils.java:151)
> at org.apache.hadoop.hbase.util.FSUtils.checkVersion(FSUtils.java:170)
> at
> org.apache.hadoop.hbase.master.MasterFileSystem.checkRootDir(MasterFileSystem.java:226)
> at
> org.apache.hadoop.hbase.master.MasterFileSystem.createInitialFileSystemLayout(MasterFileSystem.java:104)
> at
> org.apache.hadoop.hbase.master.MasterFileSystem.<init>(MasterFileSystem.java:89)
> at
> org.apache.hadoop.hbase.master.HMaster.finishInitialization(HMaster.java:337)
> at org.apache.hadoop.hbase.master.HMaster.run(HMaster.java:273)
> 2010-11-22 10:08:43,006 INFO org.apache.hadoop.hbase.master.HMaster: Aborting
> {noformat}
> I thought that that kind of issue was solved a long time ago, but somehow
> it's there again. I'll fix by handling the EOF and also will look at that
> ugly NPE.
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