[HDFS-16728] RBF throw IndexOutOfBoundsException with disableNameServices

• Type: Bug
• Status: Resolved
• Priority: Major
• Resolution: Fixed
• Affects Version/s: 3.4.0
• Fix Version/s: 3.4.0
• Component/s: rbf
• Labels: pull-request-available
• Target Version/s: 3.4.0
• Hadoop Flags: Reviewed
• Assignee: ZanderXu
• Reporter: ZanderXu
• Created: 11/Aug/22 14:32
• Updated: 28/Jan/24 08:16
• Resolved: 24/Aug/22 14:57

Description

RBF will throw an IndexOutOfBoundsException when the namespace is disabled.

Suppose we have a mount point /a/b -> ns0 -> /a/b and we disabled the ns0.  

RBF will throw IndexOutOfBoundsException during handling requests with path starting with /a/b.

java.lang.IndexOutOfBoundsException: Index: 0, Size: 0    at java.util.ArrayList.rangeCheck(ArrayList.java:657)
    at java.util.ArrayList.get(ArrayList.java:433)
    at org.apache.hadoop.hdfs.server.federation.router.RouterClientProtocol.mkdirs(RouterClientProtocol.java:756)
    at org.apache.hadoop.hdfs.server.federation.router.RouterRpcServer.mkdirs(RouterRpcServer.java:980) 

Issue Links

• links to: GitHub Pull Request #4734