Public

Check whether current user have permissions to access the path. Traverse is
always checked. Parent p

checkPermission

<init>

check

checkOwner

checkSubAccess

checkTraverse

checkStickyBit

Verify if the caller has the required permission. This will result into an
exception if the caller i

checkSuperuserPrivilege

getAccessControlEnforcer

getAttributesProvider

getINodeAttrs

getUser

Checks requested access against an Access Control List. This method relies on
finding the ACL data i

hasAclPermission

hasPermission

isSuperUser

toAccessControlString

constructPath

containsGroup

isMemberOfGroup

checkIsDirectory

FSPermissionChecker

Reading from database using SQL prepared statement

Immutable arbitrary-precision integers. All operations behave as if BigIntegers
were represented in 

java.math.BigInteger

This class represents an Internet Protocol (IP) address. An IP address is either
a 32-bit or 128-bit

java.net.InetAddress

A Map is a data structure consisting of a set of keys and values in which each
key is mapped to a si

java.util.Map

This class provides methods that return pseudo-random values.It is dangerous to
seed Random with the

java.util.Random

A NavigableSet implementation based on a TreeMap. The elements are ordered using
their Comparable, o

java.util.TreeSet

The Vector class implements a growable array of objects. Like an array, it
contains components that 

java.util.Vector

runOnUiThread

startActivity

onCreateOptionsMenu

// must tunnel these exceptions out to avoid breaking interface for

/**
   * Check whether current user have permissions to access the path.
   * Traverse is always checked.
   *
   * Parent path means the parent directory for the path.
   * Ancestor path means the last (the closest) existing ancestor directory
   * of the path.
   * Note that if the parent path exists,
   * then the parent path and the ancestor path are the same.
   *
   * For example, suppose the path is "/foo/bar/baz".
   * No matter baz is a file or a directory,
   * the parent path is "/foo/bar".
   * If bar exists, then the ancestor path is also "/foo/bar".
   * If bar does not exist and foo exists,
   * then the ancestor path is "/foo".
   * Further, if both foo and bar do not exist,
   * then the ancestor path is "/".
   *
   * @param doCheckOwner Require user to be the owner of the path?
   * @param ancestorAccess The access required by the ancestor of the path.
   * @param parentAccess The access required by the parent of the path.
   * @param access The access required by the path.
   * @param subAccess If path is a directory,
   * it is the access required of the path and all the sub-directories.
   * If path is not a directory, there is no effect.
   * @return a PermissionChecker object which caches data for later use.
   * @throws AccessControlException
   */

How to use checkTraversemethodin org.apache.hadoop.hdfs.server.namenode.FSPermissionChecker

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How to use
checkTraverse
method
in
org.apache.hadoop.hdfs.server.namenode.FSPermissionChecker