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} -- This message is automatically generated by JIRA. If you think it was sent incorrectly, please contact your JIRA administrators For more information on JIRA, see: http://www.atlassian.com/software/jira