hdfsChown()
Supported by libMaprClient
for hadoop-2.x
Changes ownership of a file or directory in the
manner of the chown
command.
ATTENTION
- To permit a client to resolve user or group from a server, set the
fs.mapr.server.resolve.user
parameter totrue
incore-site.xml
, for both secure and non secure clusters. Setting this is essential when the client does not belong to the same domain as the mapr cluster nodes, and does not have any knowledge of users present in that domain. - To permit CLDB to resolve user or group, set the
cldb.security.resolve.user
configuration parameter to1
on a non-secure cluster as follows:maprcli config save -values {"cldb.security.resolve.user":1}
You do not have to set this parameter for a secure cluster, as it is already set to
1
.
Signature
int hdfsChown(hdfsFS fs, const char* path, const char *owner, const char *group)
Parameters
Parameter | Description |
---|---|
fs | The handle to the file system. Obtain this handle with one of the
hdfsConnect() APIs. |
path | The path to the file or directory |
owner | The user to own the file or directory. Set to NULL to keep the owner as is. |
group | The group to own the file or directory. Set to NULL to keep the owner as is. |
Return Value
Returns 0 on success, -1 on error.
Check errno for error codes and meanings.
errno is set to EINVAL if the input arguments are invalid.
errno is set to EPERM if the process does not have enough privileges to perform the operation.