Nick Dimiduk created HBASE-27251:
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             Summary: Rolling back from 2.5.0-SNAPSHOT to 2.4.13 fails due to 
`File does not exist: 
/hbase/MasterData/data/master/store/.initialized/.regioninfo`
                 Key: HBASE-27251
                 URL: https://issues.apache.org/jira/browse/HBASE-27251
             Project: HBase
          Issue Type: Bug
          Components: master
    Affects Versions: 2.5.0
            Reporter: Nick Dimiduk


I was doing some perf testing with builds of 2.5.0. I rolled back to 2.4.13 and 
the master won't start. Stack trace ends in,

{noformat}
java.io.FileNotFoundException: File does not exist: 
/hbase/MasterData/data/master/store/.initialized/.regioninfo                    
                                                                      
        at 
org.apache.hadoop.hdfs.server.namenode.INodeFile.valueOf(INodeFile.java:86)     
                                                                                
                                       at 
org.apache.hadoop.hdfs.server.namenode.INodeFile.valueOf(INodeFile.java:76)
        at 
org.apache.hadoop.hdfs.server.namenode.FSDirStatAndListingOp.getBlockLocations(FSDirStatAndListingOp.java:156)
                                                                                
         at 
org.apache.hadoop.hdfs.server.namenode.FSNamesystem.getBlockLocations(FSNamesystem.java:2089)
                                                                                
                  
        at 
org.apache.hadoop.hdfs.server.namenode.NameNodeRpcServer.getBlockLocations(NameNodeRpcServer.java:762)
                                                                                
         
        at 
org.apache.hadoop.hdfs.protocolPB.ClientNamenodeProtocolServerSideTranslatorPB.getBlockLocations(ClientNamenodeProtocolServerSideTranslatorPB.java:458)
                                        
        at 
org.apache.hadoop.hdfs.protocol.proto.ClientNamenodeProtocolProtos$ClientNamenodeProtocol$2.callBlockingMethod(ClientNamenodeProtocolProtos.java)
                                                      at 
org.apache.hadoop.ipc.ProtobufRpcEngine2$Server$ProtoBufRpcInvoker.call(ProtobufRpcEngine2.java:604)
                                                                                
           
        at 
org.apache.hadoop.ipc.ProtobufRpcEngine2$Server$ProtoBufRpcInvoker.call(ProtobufRpcEngine2.java:572)
                                                                                
           
        at 
org.apache.hadoop.ipc.ProtobufRpcEngine2$Server$ProtoBufRpcInvoker.call(ProtobufRpcEngine2.java:556)
                               
        at org.apache.hadoop.ipc.RPC$Server.call(RPC.java:1093)                 
                                                                                
                                          
        at org.apache.hadoop.ipc.Server$RpcCall.run(Server.java:1043)           
                                                                                
                                          
        at org.apache.hadoop.ipc.Server$RpcCall.run(Server.java:971) 
        at 
java.base/java.security.AccessController.doPrivileged(AccessController.java:712)
                                                                                
                               
        at java.base/javax.security.auth.Subject.doAs(Subject.java:439)         
                                                                                
                                          
        at 
org.apache.hadoop.security.UserGroupInformation.doAs(UserGroupInformation.java:1878)
                                                                                
                           
        at org.apache.hadoop.ipc.Server$Handler.run(Server.java:2976)
{noformat}

When I examine the on-disk file system, I see,

{noformat}
nonroot@namenode-0:~$ hdfs dfs -ls /hbase/MasterData/data/master/store/
Found 3 items
drwxr-xr-x   - nonroot supergroup          0 2022-07-19 17:37 
/hbase/MasterData/data/master/store/.initialized
drwxr-xr-x   - nonroot supergroup          0 2022-07-19 17:37 
/hbase/MasterData/data/master/store/.tabledesc
drwxr-xr-x   - nonroot supergroup          0 2022-07-27 16:25 
/hbase/MasterData/data/master/store/1595e783b53d99cd5eef43b6debb2682
nonroot@namenode-0:~$ hdfs dfs -ls 
/hbase/MasterData/data/master/store/.initialized/
nonroot@namenode-0:~$
{noformat}



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