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From "Himanshu Vashishtha (JIRA)" <j...@apache.org>
Subject [jira] [Created] (HBASE-9497) Old .META. .tableinfo file kills HMaster
Date Tue, 10 Sep 2013 22:59:51 GMT
Himanshu Vashishtha created HBASE-9497:
------------------------------------------

             Summary: Old .META. .tableinfo file kills HMaster
                 Key: HBASE-9497
                 URL: https://issues.apache.org/jira/browse/HBASE-9497
             Project: HBase
          Issue Type: Bug
          Components: master, migration
    Affects Versions: 0.95.2
            Reporter: Himanshu Vashishtha
             Fix For: 0.98.0, 0.96.0


In pre-0.96, .META. has .tableinfo files which refer to .META. On startup, master tries to
read it and aborts since the table name has changed. The .META. .tableinfo files are not being
created in 0.94.x (fixed for 96 in HBASE-6971; but this can be reproduced when migrating from
0.92 -> 0.94 -> 0.96. Our old users would be affected by this.
{code}
java.lang.IllegalArgumentException: .META. no longer exists. The table has been renamed to
hbase:meta
	at org.apache.hadoop.hbase.TableName.valueOf(TableName.java:291)
	at org.apache.hadoop.hbase.TableName.valueOf(TableName.java:283)
	at org.apache.hadoop.hbase.HTableDescriptor.readFields(HTableDescriptor.java:960)
	at org.apache.hadoop.hbase.util.Writables.getWritable(Writables.java:131)
	at org.apache.hadoop.hbase.util.Writables.getWritable(Writables.java:101)
	at org.apache.hadoop.hbase.HTableDescriptor.parseFrom(HTableDescriptor.java:1407)
	at org.apache.hadoop.hbase.util.FSTableDescriptors.readTableDescriptor(FSTableDescriptors.java:521)
	at org.apache.hadoop.hbase.util.FSTableDescriptors.createTableDescriptorForTableDirectory(FSTableDescriptors.java:707)
	at org.apache.hadoop.hbase.util.FSTableDescriptors.createTableDescriptor(FSTableDescriptors.java:683)
	at org.apache.hadoop.hbase.util.FSTableDescriptors.createTableDescriptor(FSTableDescriptors.java:670)
	at org.apache.hadoop.hbase.master.MasterFileSystem.checkRootDir(MasterFileSystem.java:485)
	at org.apache.hadoop.hbase.master.MasterFileSystem.createInitialFileSystemLayout(MasterFileSystem.java:145)
	at org.apache.hadoop.hbase.master.MasterFileSystem.<init>(MasterFileSystem.java:129)
	at org.apache.hadoop.hbase.master.HMaster.finishInitialization(HMaster.java:761)
{code}

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