[HBASE-9509] Fix HFile V1 Detector to handle AccessControlException for non-existant files

• Type: Bug
• Status: Closed
• Priority: Major
• Resolution: Fixed
• Affects Version/s: 0.96.0
• Fix Version/s: 0.98.0, 0.96.0
• Hadoop Flags: Reviewed
• Assignee: Himanshu Vashishtha
• Reporter: Himanshu Vashishtha
• Created: 11/Sep/13 20:41
• Updated: 20/Nov/15 11:55
• Resolved: 11/Sep/13 21:19

Description

On some hadoop versions, fs.exists() throws an AccessControlException if there is a non-searchable inode in the file path. Versions such as 2.1.0-beta just returns false.
This jira is to fix HFile V1 detector tool to avoid making such calls.

See the below exception when running the tool on one hadoop version

ERROR util.HFileV1Detector: org.apache.hadoop.security.AccessControlException: Permission denied: user=hbase, access=EXECUTE, inode="/hbase/.META./.tableinfo.0000000001":hbase:supergroup:-rw-r--r--
	at org.apache.hadoop.hdfs.server.namenode.FSPermissionChecker.check(FSPermissionChecker.java:234)
	at org.apache.hadoop.hdfs.server.namenode.FSPermissionChecker.checkTraverse(FSPermissionChecker.java:187)
	at org.apache.hadoop.hdfs.server.namenode.FSPermissionChecker.checkPermission(FSPermissionChecker.java:150)
	at org.apache.hadoop.hdfs.server.namenode.FSNamesystem.checkPermission(FSNamesystem.java:5141)
	at org.apache.hadoop.hdfs.server.namenode.FSNamesystem.checkPermission(FSNamesystem.java:5123)
	at org.apache.hadoop.hdfs.server.namenode.FSNamesystem.checkTraverse(FSNamesystem.java:5102)
	at org.apache.hadoop.hdfs.server.namenode.FSNamesystem.getFileInfo(FSNamesystem.java:3265)
	at org.apache.hadoop.hdfs.server.namenode.NameNodeRpcServer.getFileInfo(NameNodeRpcServer.java:719)
	at org.apache.hadoop.hdfs.protocolPB.ClientNamenodeProtocolServerSideTranslatorPB.getFileInfo(ClientNamenodeProtocolServerSideTranslatorPB.java:692)
	at org.apache.hadoop.hdfs.protocol.proto.ClientNamenodeProtocolProtos$ClientNamenodeProtocol$2.callBlockingMethod(ClientNamenodeProtocolProtos.java:59628)
	at org.apache.hadoop.ipc.ProtobufRpcEngine$Server$ProtoBufRpcInvoker.call(ProtobufRpcEngine.java:585)
	at org.apache.hadoop.ipc.RPC$Server.call(RPC.java:1026)
	at org.apache.hadoop.ipc.Server$Handler$1.run(Server.java:2040)
	at org.apache.hadoop.ipc.Server$Handler$1.run(Server.java:2036)
	at java.security.AccessController.doPrivileged(Native Method)
	at javax.security.auth.Subject.doAs(Subject.java:396)
	at org.apache.hadoop.security.UserGroupInformation.doAs(UserGroupInformation.java:1477)
	at org.apache.hadoop.ipc.Server$Handler.run(Server.java:2034)