[HBASE-9497] Old .META. .tableinfo file kills HMaster

• Type: Bug
• Status: Closed
• Priority: Major
• Resolution: Fixed
• Affects Version/s: 0.95.2
• Fix Version/s: 0.98.0, 0.96.0
• Component/s: master, migration
• Hadoop Flags: Reviewed
• Assignee: Himanshu Vashishtha
• Reporter: Himanshu Vashishtha
• Created: 10/Sep/13 22:59
• Updated: 20/Nov/15 11:55
• Resolved: 11/Sep/13 05:30

Description

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.

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)