/*
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *     http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */
package com.facebook.presto.hive.authentication;

import org.apache.hadoop.security.UserGroupInformation;

import java.io.IOException;
import java.io.UncheckedIOException;

public class SimpleHadoopAuthentication
        implements HadoopAuthentication
{
    @Override
    public UserGroupInformation getUserGroupInformation()
    {
        try {
            return UserGroupInformation.getCurrentUser();
        }
        catch (IOException e) {
            throw new UncheckedIOException(e);
        }
    }
}

/*
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *     http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */
package com.facebook.presto.hive.authentication;

import org.apache.hadoop.security.UserGroupInformation;

import java.io.IOException;
import java.io.UncheckedIOException;

public class SimpleHadoopAuthentication
        implements HadoopAuthentication
{
    @Override
    public UserGroupInformation getUserGroupInformation()
    {
        try {
            return UserGroupInformation.getLoginUser();
        }
        catch (IOException e) {
            throw new UncheckedIOException(e);
        }
    }
}

Use loginUser instead of currentUser in SimpleHadoopAuthentication