Hi All,
I am encountering a strange scenario when trying to retrieve table names
using jdbc java.sql.Connection.getMetaData().getTables().
Ranger Policy
------------------------------------
Database: ranger_hive_test
Table: *
Hive Column: *
Allow Conditions: All permissions to the user.
------------------------------------
1) Now when I execute the below method:
private static void testWithConnMetaData() throws SQLException {
System.out.println("---------------------------testWithConnMetaData-----------------------------");
try (Connection con = DriverManager.getConnection(url, user, "")) {
ResultSet res = con.getMetaData().getTables(null, "ranger_hive_test",
"t1", null);
while (res.next()) {
System.out.println(res.getString("TABLE_NAME"));
}
}
System.out.println("---------------------------testWithConnMetaData-----------------------------");
}
I get empty resultset.
2) To verify policy and table existence when I execute the same using show
tables query, it gives me right results(table names in ranger_hive_test).
private static void testWithQuery() throws SQLException {
System.out.println("---------------------------testWithQuery-----------------------------");
try (Connection con = DriverManager.getConnection(url, user, "")) {
Statement stmt = con.createStatement();
String sql = "show tables in ranger_hive_test";
ResultSet res = stmt.executeQuery(sql);
while (res.next()) {
System.out.println(res.getString("tab_name"));
}
}
System.out.println("---------------------------testWithQuery-----------------------------");
}
Is there something I am missing so that I am not getting any results in
method 1 ? Anything else I need to add to policy?
Also surprisingly, when I add "*" to Database field in policy, I start
getting results in method 1.
Thanks,
Shubham
