hudi-cli/src/test/java/org/apache/hudi/cli/commands/TestFileSystemViewCommand.java - hudi - Git at Google

 /*
  * 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.hudi.cli.commands;

 import org.apache.hudi.cli.HoodieCLI;
 import org.apache.hudi.cli.HoodiePrintHelper;
 import org.apache.hudi.cli.HoodieTableHeaderFields;
 import org.apache.hudi.cli.TableHeader;
 import org.apache.hudi.cli.testutils.AbstractShellIntegrationTest;
 import org.apache.hudi.cli.testutils.HoodieTestCommitMetadataGenerator;
 import org.apache.hudi.common.fs.FSUtils;
 import org.apache.hudi.common.model.FileSlice;
 import org.apache.hudi.common.model.HoodieFileGroup;
 import org.apache.hudi.common.model.HoodieLogFile;
 import org.apache.hudi.common.table.HoodieTableMetaClient;
 import org.apache.hudi.common.table.view.HoodieTableFileSystemView;
 import org.apache.hudi.common.table.view.SyncableFileSystemView;
 import org.apache.hudi.common.util.NumericUtils;

 import org.junit.jupiter.api.BeforeEach;
 import org.junit.jupiter.api.Test;
 import org.springframework.shell.core.CommandResult;

 import java.io.IOException;
 import java.nio.file.Files;
 import java.nio.file.Paths;
 import java.util.ArrayList;
 import java.util.HashMap;
 import java.util.List;
 import java.util.Map;
 import java.util.UUID;
 import java.util.function.Function;
 import java.util.stream.Collectors;
 import java.util.stream.Stream;

 import static org.junit.jupiter.api.Assertions.assertEquals;
 import static org.junit.jupiter.api.Assertions.assertTrue;

 /**
  * Test class for {@link FileSystemViewCommand}.
  */
 public class TestFileSystemViewCommand extends AbstractShellIntegrationTest {

   private String partitionPath;
   private SyncableFileSystemView fsView;

   @BeforeEach
   public void init() throws IOException {
     HoodieCLI.conf = jsc.hadoopConfiguration();

     // Create table and connect
     String tableName = "test_table";
     String tablePath = Paths.get(basePath, tableName).toString();
     new TableCommand().createTable(
         tablePath, tableName,
         "COPY_ON_WRITE", "", 1, "org.apache.hudi.common.model.HoodieAvroPayload");

     metaClient = HoodieCLI.getTableMetaClient();

     partitionPath = HoodieTestCommitMetadataGenerator.DEFAULT_FIRST_PARTITION_PATH;
     String fullPartitionPath = Paths.get(tablePath, partitionPath).toString();
     Files.createDirectories(Paths.get(fullPartitionPath));

     // Generate 2 commits
     String commitTime1 = "1";
     String commitTime2 = "2";

     String fileId1 = UUID.randomUUID().toString();

     // Write date files and log file
     String testWriteToken = "1-0-1";
     Files.createFile(Paths.get(fullPartitionPath, FSUtils
         .makeDataFileName(commitTime1, testWriteToken, fileId1)));
     Files.createFile(Paths.get(fullPartitionPath, FSUtils
         .makeLogFileName(fileId1, HoodieLogFile.DELTA_EXTENSION, commitTime1, 0, testWriteToken)));
     Files.createFile(Paths.get(fullPartitionPath, FSUtils
         .makeDataFileName(commitTime2, testWriteToken, fileId1)));
     Files.createFile(Paths.get(fullPartitionPath, FSUtils
         .makeLogFileName(fileId1, HoodieLogFile.DELTA_EXTENSION, commitTime2, 0, testWriteToken)));

     // Write commit files
     Files.createFile(Paths.get(tablePath, ".hoodie", commitTime1 + ".commit"));
     Files.createFile(Paths.get(tablePath, ".hoodie", commitTime2 + ".commit"));

     // Reload meta client and create fsView
     metaClient = HoodieTableMetaClient.reload(metaClient);

     fsView = new HoodieTableFileSystemView(metaClient, metaClient.getActiveTimeline(), true);
   }

   /**
    * Test case for 'show fsview all'.
    */
   @Test
   public void testShowCommits() {
     // Test default show fsview all
     CommandResult cr = getShell().executeCommand("show fsview all");
     assertTrue(cr.isSuccess());

     // Get all file groups
     Stream<HoodieFileGroup> fileGroups = fsView.getAllFileGroups(partitionPath);

     List<Comparable[]> rows = new ArrayList<>();
     fileGroups.forEach(fg -> fg.getAllFileSlices().forEach(fs -> {
       int idx = 0;
       // For base file only Views, do not display any delta-file related columns
       Comparable[] row = new Comparable[8];
       row[idx++] = fg.getPartitionPath();
       row[idx++] = fg.getFileGroupId().getFileId();
       row[idx++] = fs.getBaseInstantTime();
       row[idx++] = fs.getBaseFile().isPresent() ? fs.getBaseFile().get().getPath() : "";
       row[idx++] = fs.getBaseFile().isPresent() ? fs.getBaseFile().get().getFileSize() : -1;
       row[idx++] = fs.getLogFiles().count();
       row[idx++] = fs.getLogFiles().mapToLong(HoodieLogFile::getFileSize).sum();
       row[idx++] = fs.getLogFiles().collect(Collectors.toList()).toString();
       rows.add(row);
     }));

     Function<Object, String> converterFunction =
         entry -> NumericUtils.humanReadableByteCount((Double.parseDouble(entry.toString())));
     Map<String, Function<Object, String>> fieldNameToConverterMap = new HashMap<>();
     fieldNameToConverterMap.put(HoodieTableHeaderFields.HEADER_TOTAL_DELTA_FILE_SIZE, converterFunction);
     fieldNameToConverterMap.put(HoodieTableHeaderFields.HEADER_DATA_FILE_SIZE, converterFunction);

     TableHeader header = new TableHeader().addTableHeaderField(HoodieTableHeaderFields.HEADER_PARTITION)
         .addTableHeaderField(HoodieTableHeaderFields.HEADER_FILE_ID)
         .addTableHeaderField(HoodieTableHeaderFields.HEADER_BASE_INSTANT)
         .addTableHeaderField(HoodieTableHeaderFields.HEADER_DATA_FILE)
         .addTableHeaderField(HoodieTableHeaderFields.HEADER_DATA_FILE_SIZE)
         .addTableHeaderField(HoodieTableHeaderFields.HEADER_NUM_DELTA_FILES)
         .addTableHeaderField(HoodieTableHeaderFields.HEADER_TOTAL_DELTA_FILE_SIZE)
         .addTableHeaderField(HoodieTableHeaderFields.HEADER_DELTA_FILES);
     String expected = HoodiePrintHelper.print(header, fieldNameToConverterMap, "", false, -1, false, rows);
     expected = removeNonWordAndStripSpace(expected);
     String got = removeNonWordAndStripSpace(cr.getResult().toString());
     assertEquals(expected, got);
   }

   /**
    * Test case for 'show fsview all' with specified values.
    */
   @Test
   public void testShowCommitsWithSpecifiedValues() {
     // Test command with options, baseFileOnly and maxInstant is 2
     CommandResult cr = getShell().executeCommand("show fsview all --baseFileOnly true --maxInstant 2");
     assertTrue(cr.isSuccess());

     List<Comparable[]> rows = new ArrayList<>();
     Stream<HoodieFileGroup> fileGroups = fsView.getAllFileGroups(partitionPath);

     // Only get instant 1, since maxInstant was specified 2
     fileGroups.forEach(fg -> fg.getAllFileSlices().filter(fs -> fs.getBaseInstantTime().equals("1")).forEach(fs -> {
       int idx = 0;
       // For base file only Views, do not display any delta-file related columns.
       Comparable[] row = new Comparable[5];
       row[idx++] = fg.getPartitionPath();
       row[idx++] = fg.getFileGroupId().getFileId();
       row[idx++] = fs.getBaseInstantTime();
       row[idx++] = fs.getBaseFile().isPresent() ? fs.getBaseFile().get().getPath() : "";
       row[idx++] = fs.getBaseFile().isPresent() ? fs.getBaseFile().get().getFileSize() : -1;
       rows.add(row);
     }));

     Function<Object, String> converterFunction =
         entry -> NumericUtils.humanReadableByteCount((Double.parseDouble(entry.toString())));
     Map<String, Function<Object, String>> fieldNameToConverterMap = new HashMap<>();
     fieldNameToConverterMap.put(HoodieTableHeaderFields.HEADER_TOTAL_DELTA_FILE_SIZE, converterFunction);
     fieldNameToConverterMap.put(HoodieTableHeaderFields.HEADER_DATA_FILE_SIZE, converterFunction);

     TableHeader header = new TableHeader().addTableHeaderField(HoodieTableHeaderFields.HEADER_PARTITION)
         .addTableHeaderField(HoodieTableHeaderFields.HEADER_FILE_ID)
         .addTableHeaderField(HoodieTableHeaderFields.HEADER_BASE_INSTANT)
         .addTableHeaderField(HoodieTableHeaderFields.HEADER_DATA_FILE)
         .addTableHeaderField(HoodieTableHeaderFields.HEADER_DATA_FILE_SIZE);

     String expected = HoodiePrintHelper.print(header, fieldNameToConverterMap, "", false, -1, false, rows);
     expected = removeNonWordAndStripSpace(expected);
     String got = removeNonWordAndStripSpace(cr.getResult().toString());
     assertEquals(expected, got);
   }

   /**
    * Test case for command 'show fsview latest'.
    */
   @Test
   public void testShowLatestFileSlices() {
     // Test show with partition path '2016/03/15'
     CommandResult cr = getShell().executeCommand("show fsview latest --partitionPath " + partitionPath);
     assertTrue(cr.isSuccess());

     Stream<FileSlice> fileSlice = fsView.getLatestFileSlices(partitionPath);

     List<Comparable[]> rows = new ArrayList<>();
     fileSlice.forEach(fs -> {
       int idx = 0;
       // For base file only Views, do not display any delta-file related columns
       Comparable[] row = new Comparable[13];
       row[idx++] = partitionPath;
       row[idx++] = fs.getFileId();
       row[idx++] = fs.getBaseInstantTime();
       row[idx++] = fs.getBaseFile().isPresent() ? fs.getBaseFile().get().getPath() : "";

       long dataFileSize = fs.getBaseFile().isPresent() ? fs.getBaseFile().get().getFileSize() : -1;
       row[idx++] = dataFileSize;

       row[idx++] = fs.getLogFiles().count();
       row[idx++] = fs.getLogFiles().mapToLong(HoodieLogFile::getFileSize).sum();
       long logFilesScheduledForCompactionTotalSize =
           fs.getLogFiles().filter(lf -> lf.getBaseCommitTime().equals(fs.getBaseInstantTime()))
               .mapToLong(HoodieLogFile::getFileSize).sum();
       row[idx++] = logFilesScheduledForCompactionTotalSize;

       long logFilesUnscheduledTotalSize =
           fs.getLogFiles().filter(lf -> !lf.getBaseCommitTime().equals(fs.getBaseInstantTime()))
               .mapToLong(HoodieLogFile::getFileSize).sum();
       row[idx++] = logFilesUnscheduledTotalSize;

       double logSelectedForCompactionToBaseRatio =
           dataFileSize > 0 ? logFilesScheduledForCompactionTotalSize / (dataFileSize * 1.0) : -1;
       row[idx++] = logSelectedForCompactionToBaseRatio;
       double logUnscheduledToBaseRatio = dataFileSize > 0 ? logFilesUnscheduledTotalSize / (dataFileSize * 1.0) : -1;
       row[idx++] = logUnscheduledToBaseRatio;

       row[idx++] = fs.getLogFiles().filter(lf -> lf.getBaseCommitTime().equals(fs.getBaseInstantTime()))
           .collect(Collectors.toList()).toString();
       row[idx++] = fs.getLogFiles().filter(lf -> !lf.getBaseCommitTime().equals(fs.getBaseInstantTime()))
           .collect(Collectors.toList()).toString();
       rows.add(row);
     });

     Function<Object, String> converterFunction =
         entry -> NumericUtils.humanReadableByteCount((Double.parseDouble(entry.toString())));
     Map<String, Function<Object, String>> fieldNameToConverterMap = new HashMap<>();
     fieldNameToConverterMap.put(HoodieTableHeaderFields.HEADER_DATA_FILE_SIZE, converterFunction);
     fieldNameToConverterMap.put(HoodieTableHeaderFields.HEADER_TOTAL_DELTA_SIZE, converterFunction);
     fieldNameToConverterMap.put(HoodieTableHeaderFields.HEADER_DELTA_SIZE_SCHEDULED, converterFunction);
     fieldNameToConverterMap.put(HoodieTableHeaderFields.HEADER_DELTA_SIZE_UNSCHEDULED, converterFunction);

     TableHeader header = new TableHeader().addTableHeaderField(HoodieTableHeaderFields.HEADER_PARTITION)
         .addTableHeaderField(HoodieTableHeaderFields.HEADER_FILE_ID)
         .addTableHeaderField(HoodieTableHeaderFields.HEADER_BASE_INSTANT)
         .addTableHeaderField(HoodieTableHeaderFields.HEADER_DATA_FILE)
         .addTableHeaderField(HoodieTableHeaderFields.HEADER_DATA_FILE_SIZE)
         .addTableHeaderField(HoodieTableHeaderFields.HEADER_NUM_DELTA_FILES)
         .addTableHeaderField(HoodieTableHeaderFields.HEADER_TOTAL_DELTA_SIZE)
         .addTableHeaderField(HoodieTableHeaderFields.HEADER_DELTA_SIZE_SCHEDULED)
         .addTableHeaderField(HoodieTableHeaderFields.HEADER_DELTA_SIZE_UNSCHEDULED)
         .addTableHeaderField(HoodieTableHeaderFields.HEADER_DELTA_BASE_SCHEDULED)
         .addTableHeaderField(HoodieTableHeaderFields.HEADER_DELTA_BASE_UNSCHEDULED)
         .addTableHeaderField(HoodieTableHeaderFields.HEADER_DELTA_FILES_SCHEDULED)
         .addTableHeaderField(HoodieTableHeaderFields.HEADER_DELTA_FILES_UNSCHEDULED);
     String expected = HoodiePrintHelper.print(header, fieldNameToConverterMap, "", false, -1, false, rows);
     expected = removeNonWordAndStripSpace(expected);
     String got = removeNonWordAndStripSpace(cr.getResult().toString());
     assertEquals(expected, got);
   }
 }
	/*
	* 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.hudi.cli.commands;

	import org.apache.hudi.cli.HoodieCLI;
	import org.apache.hudi.cli.HoodiePrintHelper;
	import org.apache.hudi.cli.HoodieTableHeaderFields;
	import org.apache.hudi.cli.TableHeader;
	import org.apache.hudi.cli.testutils.AbstractShellIntegrationTest;
	import org.apache.hudi.cli.testutils.HoodieTestCommitMetadataGenerator;
	import org.apache.hudi.common.fs.FSUtils;
	import org.apache.hudi.common.model.FileSlice;
	import org.apache.hudi.common.model.HoodieFileGroup;
	import org.apache.hudi.common.model.HoodieLogFile;
	import org.apache.hudi.common.table.HoodieTableMetaClient;
	import org.apache.hudi.common.table.view.HoodieTableFileSystemView;
	import org.apache.hudi.common.table.view.SyncableFileSystemView;
	import org.apache.hudi.common.util.NumericUtils;

	import org.junit.jupiter.api.BeforeEach;
	import org.junit.jupiter.api.Test;
	import org.springframework.shell.core.CommandResult;

	import java.io.IOException;
	import java.nio.file.Files;
	import java.nio.file.Paths;
	import java.util.ArrayList;
	import java.util.HashMap;
	import java.util.List;
	import java.util.Map;
	import java.util.UUID;
	import java.util.function.Function;
	import java.util.stream.Collectors;
	import java.util.stream.Stream;

	import static org.junit.jupiter.api.Assertions.assertEquals;
	import static org.junit.jupiter.api.Assertions.assertTrue;

	/**
	* Test class for {@link FileSystemViewCommand}.
	*/
	public class TestFileSystemViewCommand extends AbstractShellIntegrationTest {

	private String partitionPath;
	private SyncableFileSystemView fsView;

	@BeforeEach
	public void init() throws IOException {
	HoodieCLI.conf = jsc.hadoopConfiguration();

	// Create table and connect
	String tableName = "test_table";
	String tablePath = Paths.get(basePath, tableName).toString();
	new TableCommand().createTable(
	tablePath, tableName,
	"COPY_ON_WRITE", "", 1, "org.apache.hudi.common.model.HoodieAvroPayload");

	metaClient = HoodieCLI.getTableMetaClient();

	partitionPath = HoodieTestCommitMetadataGenerator.DEFAULT_FIRST_PARTITION_PATH;
	String fullPartitionPath = Paths.get(tablePath, partitionPath).toString();
	Files.createDirectories(Paths.get(fullPartitionPath));

	// Generate 2 commits
	String commitTime1 = "1";
	String commitTime2 = "2";

	String fileId1 = UUID.randomUUID().toString();

	// Write date files and log file
	String testWriteToken = "1-0-1";
	Files.createFile(Paths.get(fullPartitionPath, FSUtils
	.makeDataFileName(commitTime1, testWriteToken, fileId1)));
	Files.createFile(Paths.get(fullPartitionPath, FSUtils
	.makeLogFileName(fileId1, HoodieLogFile.DELTA_EXTENSION, commitTime1, 0, testWriteToken)));
	Files.createFile(Paths.get(fullPartitionPath, FSUtils
	.makeDataFileName(commitTime2, testWriteToken, fileId1)));
	Files.createFile(Paths.get(fullPartitionPath, FSUtils
	.makeLogFileName(fileId1, HoodieLogFile.DELTA_EXTENSION, commitTime2, 0, testWriteToken)));

	// Write commit files
	Files.createFile(Paths.get(tablePath, ".hoodie", commitTime1 + ".commit"));
	Files.createFile(Paths.get(tablePath, ".hoodie", commitTime2 + ".commit"));

	// Reload meta client and create fsView
	metaClient = HoodieTableMetaClient.reload(metaClient);

	fsView = new HoodieTableFileSystemView(metaClient, metaClient.getActiveTimeline(), true);
	}

	/**
	* Test case for 'show fsview all'.
	*/
	@Test
	public void testShowCommits() {
	// Test default show fsview all
	CommandResult cr = getShell().executeCommand("show fsview all");
	assertTrue(cr.isSuccess());

	// Get all file groups
	Stream<HoodieFileGroup> fileGroups = fsView.getAllFileGroups(partitionPath);

	List<Comparable[]> rows = new ArrayList<>();
	fileGroups.forEach(fg -> fg.getAllFileSlices().forEach(fs -> {
	int idx = 0;
	// For base file only Views, do not display any delta-file related columns
	Comparable[] row = new Comparable[8];
	row[idx++] = fg.getPartitionPath();
	row[idx++] = fg.getFileGroupId().getFileId();
	row[idx++] = fs.getBaseInstantTime();
	row[idx++] = fs.getBaseFile().isPresent() ? fs.getBaseFile().get().getPath() : "";
	row[idx++] = fs.getBaseFile().isPresent() ? fs.getBaseFile().get().getFileSize() : -1;
	row[idx++] = fs.getLogFiles().count();
	row[idx++] = fs.getLogFiles().mapToLong(HoodieLogFile::getFileSize).sum();
	row[idx++] = fs.getLogFiles().collect(Collectors.toList()).toString();
	rows.add(row);
	}));

	Function<Object, String> converterFunction =
	entry -> NumericUtils.humanReadableByteCount((Double.parseDouble(entry.toString())));
	Map<String, Function<Object, String>> fieldNameToConverterMap = new HashMap<>();
	fieldNameToConverterMap.put(HoodieTableHeaderFields.HEADER_TOTAL_DELTA_FILE_SIZE, converterFunction);
	fieldNameToConverterMap.put(HoodieTableHeaderFields.HEADER_DATA_FILE_SIZE, converterFunction);

	TableHeader header = new TableHeader().addTableHeaderField(HoodieTableHeaderFields.HEADER_PARTITION)
	.addTableHeaderField(HoodieTableHeaderFields.HEADER_FILE_ID)
	.addTableHeaderField(HoodieTableHeaderFields.HEADER_BASE_INSTANT)
	.addTableHeaderField(HoodieTableHeaderFields.HEADER_DATA_FILE)
	.addTableHeaderField(HoodieTableHeaderFields.HEADER_DATA_FILE_SIZE)
	.addTableHeaderField(HoodieTableHeaderFields.HEADER_NUM_DELTA_FILES)
	.addTableHeaderField(HoodieTableHeaderFields.HEADER_TOTAL_DELTA_FILE_SIZE)
	.addTableHeaderField(HoodieTableHeaderFields.HEADER_DELTA_FILES);
	String expected = HoodiePrintHelper.print(header, fieldNameToConverterMap, "", false, -1, false, rows);
	expected = removeNonWordAndStripSpace(expected);
	String got = removeNonWordAndStripSpace(cr.getResult().toString());
	assertEquals(expected, got);
	}

	/**
	* Test case for 'show fsview all' with specified values.
	*/
	@Test
	public void testShowCommitsWithSpecifiedValues() {
	// Test command with options, baseFileOnly and maxInstant is 2
	CommandResult cr = getShell().executeCommand("show fsview all --baseFileOnly true --maxInstant 2");
	assertTrue(cr.isSuccess());

	List<Comparable[]> rows = new ArrayList<>();
	Stream<HoodieFileGroup> fileGroups = fsView.getAllFileGroups(partitionPath);

	// Only get instant 1, since maxInstant was specified 2
	fileGroups.forEach(fg -> fg.getAllFileSlices().filter(fs -> fs.getBaseInstantTime().equals("1")).forEach(fs -> {
	int idx = 0;
	// For base file only Views, do not display any delta-file related columns.
	Comparable[] row = new Comparable[5];
	row[idx++] = fg.getPartitionPath();
	row[idx++] = fg.getFileGroupId().getFileId();
	row[idx++] = fs.getBaseInstantTime();
	row[idx++] = fs.getBaseFile().isPresent() ? fs.getBaseFile().get().getPath() : "";
	row[idx++] = fs.getBaseFile().isPresent() ? fs.getBaseFile().get().getFileSize() : -1;
	rows.add(row);
	}));

	Function<Object, String> converterFunction =
	entry -> NumericUtils.humanReadableByteCount((Double.parseDouble(entry.toString())));
	Map<String, Function<Object, String>> fieldNameToConverterMap = new HashMap<>();
	fieldNameToConverterMap.put(HoodieTableHeaderFields.HEADER_TOTAL_DELTA_FILE_SIZE, converterFunction);
	fieldNameToConverterMap.put(HoodieTableHeaderFields.HEADER_DATA_FILE_SIZE, converterFunction);

	TableHeader header = new TableHeader().addTableHeaderField(HoodieTableHeaderFields.HEADER_PARTITION)
	.addTableHeaderField(HoodieTableHeaderFields.HEADER_FILE_ID)
	.addTableHeaderField(HoodieTableHeaderFields.HEADER_BASE_INSTANT)
	.addTableHeaderField(HoodieTableHeaderFields.HEADER_DATA_FILE)
	.addTableHeaderField(HoodieTableHeaderFields.HEADER_DATA_FILE_SIZE);

	String expected = HoodiePrintHelper.print(header, fieldNameToConverterMap, "", false, -1, false, rows);
	expected = removeNonWordAndStripSpace(expected);
	String got = removeNonWordAndStripSpace(cr.getResult().toString());
	assertEquals(expected, got);
	}

	/**
	* Test case for command 'show fsview latest'.
	*/
	@Test
	public void testShowLatestFileSlices() {
	// Test show with partition path '2016/03/15'
	CommandResult cr = getShell().executeCommand("show fsview latest --partitionPath " + partitionPath);
	assertTrue(cr.isSuccess());

	Stream<FileSlice> fileSlice = fsView.getLatestFileSlices(partitionPath);

	List<Comparable[]> rows = new ArrayList<>();
	fileSlice.forEach(fs -> {
	int idx = 0;
	// For base file only Views, do not display any delta-file related columns
	Comparable[] row = new Comparable[13];
	row[idx++] = partitionPath;
	row[idx++] = fs.getFileId();
	row[idx++] = fs.getBaseInstantTime();
	row[idx++] = fs.getBaseFile().isPresent() ? fs.getBaseFile().get().getPath() : "";

	long dataFileSize = fs.getBaseFile().isPresent() ? fs.getBaseFile().get().getFileSize() : -1;
	row[idx++] = dataFileSize;

	row[idx++] = fs.getLogFiles().count();
	row[idx++] = fs.getLogFiles().mapToLong(HoodieLogFile::getFileSize).sum();
	long logFilesScheduledForCompactionTotalSize =
	fs.getLogFiles().filter(lf -> lf.getBaseCommitTime().equals(fs.getBaseInstantTime()))
	.mapToLong(HoodieLogFile::getFileSize).sum();
	row[idx++] = logFilesScheduledForCompactionTotalSize;

	long logFilesUnscheduledTotalSize =
	fs.getLogFiles().filter(lf -> !lf.getBaseCommitTime().equals(fs.getBaseInstantTime()))
	.mapToLong(HoodieLogFile::getFileSize).sum();
	row[idx++] = logFilesUnscheduledTotalSize;

	double logSelectedForCompactionToBaseRatio =
	dataFileSize > 0 ? logFilesScheduledForCompactionTotalSize / (dataFileSize * 1.0) : -1;
	row[idx++] = logSelectedForCompactionToBaseRatio;
	double logUnscheduledToBaseRatio = dataFileSize > 0 ? logFilesUnscheduledTotalSize / (dataFileSize * 1.0) : -1;
	row[idx++] = logUnscheduledToBaseRatio;

	row[idx++] = fs.getLogFiles().filter(lf -> lf.getBaseCommitTime().equals(fs.getBaseInstantTime()))
	.collect(Collectors.toList()).toString();
	row[idx++] = fs.getLogFiles().filter(lf -> !lf.getBaseCommitTime().equals(fs.getBaseInstantTime()))
	.collect(Collectors.toList()).toString();
	rows.add(row);
	});

	Function<Object, String> converterFunction =
	entry -> NumericUtils.humanReadableByteCount((Double.parseDouble(entry.toString())));
	Map<String, Function<Object, String>> fieldNameToConverterMap = new HashMap<>();
	fieldNameToConverterMap.put(HoodieTableHeaderFields.HEADER_DATA_FILE_SIZE, converterFunction);
	fieldNameToConverterMap.put(HoodieTableHeaderFields.HEADER_TOTAL_DELTA_SIZE, converterFunction);
	fieldNameToConverterMap.put(HoodieTableHeaderFields.HEADER_DELTA_SIZE_SCHEDULED, converterFunction);
	fieldNameToConverterMap.put(HoodieTableHeaderFields.HEADER_DELTA_SIZE_UNSCHEDULED, converterFunction);

	TableHeader header = new TableHeader().addTableHeaderField(HoodieTableHeaderFields.HEADER_PARTITION)
	.addTableHeaderField(HoodieTableHeaderFields.HEADER_FILE_ID)
	.addTableHeaderField(HoodieTableHeaderFields.HEADER_BASE_INSTANT)
	.addTableHeaderField(HoodieTableHeaderFields.HEADER_DATA_FILE)
	.addTableHeaderField(HoodieTableHeaderFields.HEADER_DATA_FILE_SIZE)
	.addTableHeaderField(HoodieTableHeaderFields.HEADER_NUM_DELTA_FILES)
	.addTableHeaderField(HoodieTableHeaderFields.HEADER_TOTAL_DELTA_SIZE)
	.addTableHeaderField(HoodieTableHeaderFields.HEADER_DELTA_SIZE_SCHEDULED)
	.addTableHeaderField(HoodieTableHeaderFields.HEADER_DELTA_SIZE_UNSCHEDULED)
	.addTableHeaderField(HoodieTableHeaderFields.HEADER_DELTA_BASE_SCHEDULED)
	.addTableHeaderField(HoodieTableHeaderFields.HEADER_DELTA_BASE_UNSCHEDULED)
	.addTableHeaderField(HoodieTableHeaderFields.HEADER_DELTA_FILES_SCHEDULED)
	.addTableHeaderField(HoodieTableHeaderFields.HEADER_DELTA_FILES_UNSCHEDULED);
	String expected = HoodiePrintHelper.print(header, fieldNameToConverterMap, "", false, -1, false, rows);
	expected = removeNonWordAndStripSpace(expected);
	String got = removeNonWordAndStripSpace(cr.getResult().toString());
	assertEquals(expected, got);
	}
	}