/*
 * 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.hadoop.hive.ql;

import org.apache.hadoop.hive.conf.HiveConf;
import org.apache.hadoop.hive.metastore.api.ShowCompactRequest;
import org.apache.hadoop.hive.metastore.api.ShowCompactResponse;
import org.apache.hadoop.hive.metastore.txn.TxnStore;
import org.apache.hadoop.hive.metastore.txn.TxnUtils;
import org.junit.Assert;
import org.junit.Rule;
import org.junit.Test;
import org.junit.rules.TemporaryFolder;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;

import java.io.File;

public class TestTxnConcatenate extends TxnCommandsBaseForTests {
  static final private Logger LOG = LoggerFactory.getLogger(TestTxnConcatenate.class);
  private static final String TEST_DATA_DIR =
      new File(System.getProperty("java.io.tmpdir") +
          File.separator + TestTxnLoadData.class.getCanonicalName()
          + "-" + System.currentTimeMillis()
      ).getPath().replaceAll("\\\\", "/");
  @Rule
  public TemporaryFolder folder = new TemporaryFolder();

  @Override
  protected String getTestDataDir() {
    return TEST_DATA_DIR;
  }

  @Test
  public void testConcatenate() throws Exception {
    runStatementOnDriver("insert into " + Table.ACIDTBL + " values(1,2),(4,5)");
    runStatementOnDriver("update " + Table.ACIDTBL + " set b = 4");
    runStatementOnDriver("insert into " + Table.ACIDTBL + " values(5,6),(8,8)");
    String testQuery = "select ROW__ID, a, b, INPUT__FILE__NAME from " + Table.ACIDTBL + " order by a, b";
    String[][] expected = new String[][] {
        {"{\"writeid\":2,\"bucketid\":536936449,\"rowid\":0}\t1\t4",
            "acidtbl/delta_0000002_0000002_0001/bucket_00001_0"},
        {"{\"writeid\":2,\"bucketid\":536936449,\"rowid\":1}\t4\t4",
            "acidtbl/delta_0000002_0000002_0001/bucket_00001_0"},
        {"{\"writeid\":3,\"bucketid\":536936448,\"rowid\":0}\t5\t6",
            "acidtbl/delta_0000003_0000003_0000/bucket_00001_0"},
        {"{\"writeid\":3,\"bucketid\":536936448,\"rowid\":1}\t8\t8",
            "acidtbl/delta_0000003_0000003_0000/bucket_00001_0"}};
    checkResult(expected, testQuery, false, "check data", LOG);

    /*in UTs, there is no standalone HMS running to kick off compaction so it's done via runWorker()
     but in normal usage 'concatenate' is blocking, */
    hiveConf.setBoolVar(HiveConf.ConfVars.TRANSACTIONAL_CONCATENATE_NOBLOCK, true);
    runStatementOnDriver("alter table " + Table.ACIDTBL + " concatenate");

    TxnStore txnStore = TxnUtils.getTxnStore(hiveConf);
    ShowCompactResponse rsp = txnStore.showCompact(new ShowCompactRequest());
    Assert.assertEquals(1, rsp.getCompactsSize());
    Assert.assertEquals(TxnStore.INITIATED_RESPONSE, rsp.getCompacts().get(0).getState());
    runWorker(hiveConf);
    rsp = txnStore.showCompact(new ShowCompactRequest());
    Assert.assertEquals(1, rsp.getCompactsSize());
    Assert.assertEquals(TxnStore.CLEANING_RESPONSE, rsp.getCompacts().get(0).getState());
    String[][] expected2 = new String[][] {
        {"{\"writeid\":2,\"bucketid\":536936449,\"rowid\":0}\t1\t4",
            "acidtbl/base_0000003_v0000021/bucket_00001"},
        {"{\"writeid\":2,\"bucketid\":536936449,\"rowid\":1}\t4\t4",
            "acidtbl/base_0000003_v0000021/bucket_00001"},
        {"{\"writeid\":3,\"bucketid\":536936448,\"rowid\":0}\t5\t6",
            "acidtbl/base_0000003_v0000021/bucket_00001"},
        {"{\"writeid\":3,\"bucketid\":536936448,\"rowid\":1}\t8\t8",
            "acidtbl/base_0000003_v0000021/bucket_00001"}};
    checkResult(expected2, testQuery, false, "check data after concatenate", LOG);
  }
  @Test
  public void testConcatenatePart() throws Exception {
    runStatementOnDriver("insert into " + Table.ACIDTBLPART + " values(1,2,'p1'),(4,5,'p2')");
    runStatementOnDriver("update " + Table.ACIDTBLPART + " set b = 4 where p='p1'");
    runStatementOnDriver("insert into " + Table.ACIDTBLPART + " values(5,6,'p1'),(8,8,'p2')");
    String testQuery = "select ROW__ID, a, b, INPUT__FILE__NAME from " + Table.ACIDTBLPART + " order by a, b";
    String[][] expected = new String[][] {
        {"{\"writeid\":2,\"bucketid\":536936449,\"rowid\":0}\t1\t4",
            "acidtblpart/p=p1/delta_0000002_0000002_0001/bucket_00001_0"},
        {"{\"writeid\":1,\"bucketid\":536936448,\"rowid\":0}\t4\t5",
            "acidtblpart/p=p2/delta_0000001_0000001_0000/bucket_00001_0"},
        {"{\"writeid\":3,\"bucketid\":536936448,\"rowid\":0}\t5\t6",
            "acidtblpart/p=p1/delta_0000003_0000003_0000/bucket_00001_0"},
        {"{\"writeid\":3,\"bucketid\":536936448,\"rowid\":0}\t8\t8",
            "acidtblpart/p=p2/delta_0000003_0000003_0000/bucket_00001_0"}};
    checkResult(expected, testQuery, false, "check data", LOG);

    /*in UTs, there is no standalone HMS running to kick off compaction so it's done via runWorker()
     but in normal usage 'concatenate' is blocking, */
    hiveConf.setBoolVar(HiveConf.ConfVars.TRANSACTIONAL_CONCATENATE_NOBLOCK, true);
    runStatementOnDriver("alter table " + Table.ACIDTBLPART + " PARTITION(p='p1') concatenate");

    TxnStore txnStore = TxnUtils.getTxnStore(hiveConf);
    ShowCompactResponse rsp = txnStore.showCompact(new ShowCompactRequest());
    Assert.assertEquals(1, rsp.getCompactsSize());
    Assert.assertEquals(TxnStore.INITIATED_RESPONSE, rsp.getCompacts().get(0).getState());
    runWorker(hiveConf);
    rsp = txnStore.showCompact(new ShowCompactRequest());
    Assert.assertEquals(1, rsp.getCompactsSize());
    Assert.assertEquals(TxnStore.CLEANING_RESPONSE, rsp.getCompacts().get(0).getState());
    String[][] expected2 = new String[][] {
        {"{\"writeid\":2,\"bucketid\":536936449,\"rowid\":0}\t1\t4",
            "acidtblpart/p=p1/base_0000003_v0000021/bucket_00001"},
        {"{\"writeid\":1,\"bucketid\":536936448,\"rowid\":0}\t4\t5",
            "acidtblpart/p=p2/delta_0000001_0000001_0000/bucket_00001_0"},
        {"{\"writeid\":3,\"bucketid\":536936448,\"rowid\":0}\t5\t6",
            "acidtblpart/p=p1/base_0000003_v0000021/bucket_00001"},
        {"{\"writeid\":3,\"bucketid\":536936448,\"rowid\":0}\t8\t8",
            "acidtblpart/p=p2/delta_0000003_0000003_0000/bucket_00001_0"}};

    checkResult(expected2, testQuery, false, "check data after concatenate", LOG);
  }

  @Test
  public void testConcatenateMM() throws Exception {
    HiveConf.setBoolVar(hiveConf, HiveConf.ConfVars.HIVE_CREATE_TABLES_AS_INSERT_ONLY, true);
    runStatementOnDriver("drop table if exists T");
    runStatementOnDriver("create table T(a int, b int)");
    runStatementOnDriver("insert into T values(1,2),(4,5)");
    runStatementOnDriver("insert into T values(5,6),(8,8)");
    String testQuery = "select a, b, INPUT__FILE__NAME from T order by a, b";
    String[][] expected = new String[][] {
        {"1\t2", "t/delta_0000001_0000001_0000/000000_0"},
        {"4\t5", "t/delta_0000001_0000001_0000/000000_0"},
        {"5\t6", "t/delta_0000002_0000002_0000/000000_0"},
        {"8\t8", "t/delta_0000002_0000002_0000/000000_0"}};
    checkResult(expected, testQuery, false, "check data", LOG);

    /*in UTs, there is no standalone HMS running to kick off compaction so it's done via runWorker()
      but in normal usage 'concatenate' is blocking, */
    hiveConf.setBoolVar(HiveConf.ConfVars.TRANSACTIONAL_CONCATENATE_NOBLOCK, true);
    runStatementOnDriver("alter table T concatenate");

    TxnStore txnStore = TxnUtils.getTxnStore(hiveConf);
    ShowCompactResponse rsp = txnStore.showCompact(new ShowCompactRequest());
    Assert.assertEquals(1, rsp.getCompactsSize());
    Assert.assertEquals(TxnStore.INITIATED_RESPONSE, rsp.getCompacts().get(0).getState());
    runWorker(hiveConf);
    rsp = txnStore.showCompact(new ShowCompactRequest());
    Assert.assertEquals(1, rsp.getCompactsSize());
    Assert.assertEquals(TxnStore.CLEANING_RESPONSE, rsp.getCompacts().get(0).getState());
    String[][] expected2 = new String[][] {
        {"1\t2", "t/base_0000003_v0000022/000000_0"},
        {"4\t5", "t/base_0000003_v0000022/000000_0"},
        {"5\t6", "t/base_0000003_v0000022/000000_0"},
        {"8\t8", "t/base_0000003_v0000022/000000_0"}};
    checkResult(expected2, testQuery, false, "check data after concatenate", LOG);
  }
}
