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https://issues.apache.org/jira/browse/HBASE-9497?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13764997#comment-13764997
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Aleksandr Shulman commented on HBASE-9497:
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Thanks [~saint....@gmail.com] :)
Yep, we should test both clean shutdown and messy shutdown as part of general
upgrade testing.
> 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
> Assignee: Himanshu Vashishtha
> Fix For: 0.98.0, 0.96.0
>
> Attachments: HBase-9497.patch
>
>
> 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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