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https://issues.apache.org/jira/browse/HDFS-13668?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16578039#comment-16578039
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Hudson commented on HDFS-13668:
-------------------------------
SUCCESS: Integrated in Jenkins build Hadoop-trunk-Commit #14755 (See
[https://builds.apache.org/job/Hadoop-trunk-Commit/14755/])
HDFS-13668. FSPermissionChecker may throws AIOOE when check inode (drankye: rev
475bff6e8ea23dc0e12ea317531613f8aa74c872)
* (edit)
hadoop-hdfs-project/hadoop-hdfs/src/test/java/org/apache/hadoop/hdfs/server/namenode/TestINodeAttributeProvider.java
* (edit)
hadoop-hdfs-project/hadoop-hdfs/src/main/java/org/apache/hadoop/hdfs/server/namenode/FSPermissionChecker.java
> FSPermissionChecker may throws AIOOE when check inode permission
> ----------------------------------------------------------------
>
> Key: HDFS-13668
> URL: https://issues.apache.org/jira/browse/HDFS-13668
> Project: Hadoop HDFS
> Issue Type: Bug
> Components: namenode
> Affects Versions: 3.1.0, 2.10.0, 2.7.7
> Reporter: He Xiaoqiao
> Assignee: He Xiaoqiao
> Priority: Major
> Fix For: 3.2.0
>
> Attachments: HDFS-13668-trunk.001.patch, HDFS-13668-trunk.002.patch,
> HDFS-13668-trunk.003.patch
>
>
> {{FSPermissionChecker}} may throw {{ArrayIndexOutOfBoundsException:0}} when
> check if has permission, since it only check inode's {{aclFeature}} if null
> or not but not check it's entry size. When it meets {{aclFeature}} not null
> but it's entry size equal to 0, it will throw AIOOE.
> {code:java}
> private boolean hasPermission(INodeAttributes inode, FsAction access) {
> ......
> final AclFeature aclFeature = inode.getAclFeature();
> if (aclFeature != null) {
> // It's possible that the inode has a default ACL but no access ACL.
> int firstEntry = aclFeature.getEntryAt(0);
> if (AclEntryStatusFormat.getScope(firstEntry) == AclEntryScope.ACCESS) {
> return hasAclPermission(inode, access, mode, aclFeature);
> }
> }
> ......
> }
> {code}
> Actually if use default {{INodeAttributeProvider}}, it can ensure that when
> {{inode}}'s aclFeature is not null and it's entry size also will be greater
> than 0, but {{INodeAttributeProvider}} is a public interface, we could not
> ensure external implement (e.g. Apache Sentry, Apache Ranger) also has the
> similar constraint.
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