org.apache.hive.service.server.TestHS2ClearDanglingScratchDir.java Source code

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Here is the source code for org.apache.hive.service.server.TestHS2ClearDanglingScratchDir.java

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/**
 * Licensed to the Apache Software Foundation (ASF) under one
 * or more contributor license agreements.  See the NOTICE file
 * distributed with this work for additional information
 * regarding copyright ownership.  The ASF licenses this file
 * to you 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 org.apache.hive.service.server;

import java.util.UUID;

import org.apache.hadoop.conf.Configuration;
import org.apache.hadoop.fs.FileStatus;
import org.apache.hadoop.fs.Path;
import org.apache.hadoop.fs.permission.FsPermission;
import org.apache.hadoop.hdfs.MiniDFSCluster;
import org.apache.hadoop.hive.conf.HiveConf;
import org.apache.hadoop.hive.ql.WindowsPathUtil;
import org.apache.hadoop.hive.ql.session.SessionState;
import org.apache.hadoop.hive.shims.Utils;
import org.apache.hadoop.util.Shell;
import org.junit.Assert;
import org.junit.Test;

public class TestHS2ClearDanglingScratchDir {
    @Test
    public void testScratchDirCleared() throws Exception {
        MiniDFSCluster m_dfs = new MiniDFSCluster.Builder(new Configuration()).numDataNodes(1).format(true).build();
        HiveConf conf = new HiveConf();
        conf.addResource(m_dfs.getConfiguration(0));
        if (Shell.WINDOWS) {
            WindowsPathUtil.convertPathsFromWindowsToHdfs(conf);
        }
        conf.set(HiveConf.ConfVars.HIVE_SCRATCH_DIR_LOCK.toString(), "true");
        conf.set(HiveConf.ConfVars.HIVE_SERVER2_CLEAR_DANGLING_SCRATCH_DIR.toString(), "true");

        Path scratchDir = new Path(HiveConf.getVar(conf, HiveConf.ConfVars.SCRATCHDIR));
        m_dfs.getFileSystem().mkdirs(scratchDir);
        m_dfs.getFileSystem().setPermission(scratchDir, new FsPermission("777"));

        // Fake two live session
        SessionState.start(conf);
        conf.setVar(HiveConf.ConfVars.HIVESESSIONID, UUID.randomUUID().toString());
        SessionState.start(conf);

        // Fake dead session
        Path fakeSessionPath = new Path(new Path(scratchDir, Utils.getUGI().getShortUserName()),
                UUID.randomUUID().toString());
        m_dfs.getFileSystem().mkdirs(fakeSessionPath);
        m_dfs.getFileSystem().create(new Path(fakeSessionPath, "inuse.lck")).close();

        FileStatus[] scratchDirs = m_dfs.getFileSystem()
                .listStatus(new Path(scratchDir, Utils.getUGI().getShortUserName()));

        Assert.assertEquals(scratchDirs.length, 3);

        HiveServer2.scheduleClearDanglingScratchDir(conf, 0);

        // Check dead session get cleared
        long start = System.currentTimeMillis();
        long end;
        do {
            Thread.sleep(200);
            end = System.currentTimeMillis();
            if (end - start > 5000) {
                Assert.fail("timeout, scratch dir has not been cleared");
            }
            scratchDirs = m_dfs.getFileSystem().listStatus(new Path(scratchDir, Utils.getUGI().getShortUserName()));
        } while (scratchDirs.length != 2);
    }
}