001/*
002 * Licensed to the Apache Software Foundation (ASF) under one
003 * or more contributor license agreements.  See the NOTICE file
004 * distributed with this work for additional information
005 * regarding copyright ownership.  The ASF licenses this file
006 * to you under the Apache License, Version 2.0 (the
007 * "License"); you may not use this file except in compliance
008 * with the License.  You may obtain a copy of the License at
009 *
010 *     http://www.apache.org/licenses/LICENSE-2.0
011 *
012 * Unless required by applicable law or agreed to in writing, software
013 * distributed under the License is distributed on an "AS IS" BASIS,
014 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
015 * See the License for the specific language governing permissions and
016 * limitations under the License.
017 */
018package org.apache.hadoop.hbase.mapreduce;
019
020import static java.lang.String.format;
021
022import java.io.File;
023import java.io.IOException;
024import java.util.ArrayList;
025import java.util.Base64;
026import java.util.HashSet;
027import java.util.Set;
028import org.apache.commons.lang3.StringUtils;
029import org.apache.hadoop.conf.Configuration;
030import org.apache.hadoop.conf.Configured;
031import org.apache.hadoop.fs.Path;
032import org.apache.hadoop.hbase.HBaseConfiguration;
033import org.apache.hadoop.hbase.HColumnDescriptor;
034import org.apache.hadoop.hbase.HConstants;
035import org.apache.hadoop.hbase.HTableDescriptor;
036import org.apache.hadoop.hbase.TableName;
037import org.apache.hadoop.hbase.TableNotEnabledException;
038import org.apache.hadoop.hbase.TableNotFoundException;
039import org.apache.hadoop.hbase.client.Admin;
040import org.apache.hadoop.hbase.client.ColumnFamilyDescriptor;
041import org.apache.hadoop.hbase.client.Connection;
042import org.apache.hadoop.hbase.client.ConnectionFactory;
043import org.apache.hadoop.hbase.client.Put;
044import org.apache.hadoop.hbase.client.RegionLocator;
045import org.apache.hadoop.hbase.client.Table;
046import org.apache.hadoop.hbase.client.TableDescriptor;
047import org.apache.hadoop.hbase.io.ImmutableBytesWritable;
048import org.apache.hadoop.hbase.regionserver.NoSuchColumnFamilyException;
049import org.apache.hadoop.hbase.util.Bytes;
050import org.apache.hadoop.hbase.util.EnvironmentEdgeManager;
051import org.apache.hadoop.hbase.util.Pair;
052import org.apache.hadoop.io.Text;
053import org.apache.hadoop.mapreduce.Job;
054import org.apache.hadoop.mapreduce.lib.input.FileInputFormat;
055import org.apache.hadoop.mapreduce.lib.input.TextInputFormat;
056import org.apache.hadoop.mapreduce.lib.output.FileOutputFormat;
057import org.apache.hadoop.mapreduce.lib.output.NullOutputFormat;
058import org.apache.hadoop.security.Credentials;
059import org.apache.hadoop.util.Tool;
060import org.apache.hadoop.util.ToolRunner;
061import org.apache.yetus.audience.InterfaceAudience;
062import org.slf4j.Logger;
063import org.slf4j.LoggerFactory;
064
065import org.apache.hbase.thirdparty.com.google.common.base.Preconditions;
066import org.apache.hbase.thirdparty.com.google.common.base.Splitter;
067import org.apache.hbase.thirdparty.com.google.common.collect.Lists;
068
069/**
070 * Tool to import data from a TSV file. This tool is rather simplistic - it doesn't do any quoting
071 * or escaping, but is useful for many data loads.
072 * @see ImportTsv#usage(String)
073 */
074@InterfaceAudience.Public
075public class ImportTsv extends Configured implements Tool {
076
077  protected static final Logger LOG = LoggerFactory.getLogger(ImportTsv.class);
078
079  final static String NAME = "importtsv";
080
081  public final static String MAPPER_CONF_KEY = "importtsv.mapper.class";
082  public final static String BULK_OUTPUT_CONF_KEY = "importtsv.bulk.output";
083  public final static String TIMESTAMP_CONF_KEY = "importtsv.timestamp";
084  public final static String JOB_NAME_CONF_KEY = "mapreduce.job.name";
085  // TODO: the rest of these configs are used exclusively by TsvImporterMapper.
086  // Move them out of the tool and let the mapper handle its own validation.
087  public final static String DRY_RUN_CONF_KEY = "importtsv.dry.run";
088  // If true, bad lines are logged to stderr. Default: false.
089  public final static String LOG_BAD_LINES_CONF_KEY = "importtsv.log.bad.lines";
090  public final static String SKIP_LINES_CONF_KEY = "importtsv.skip.bad.lines";
091  public final static String SKIP_EMPTY_COLUMNS = "importtsv.skip.empty.columns";
092  public final static String COLUMNS_CONF_KEY = "importtsv.columns";
093  public final static String SEPARATOR_CONF_KEY = "importtsv.separator";
094  public final static String ATTRIBUTE_SEPERATOR_CONF_KEY = "attributes.seperator";
095  // This config is used to propagate credentials from parent MR jobs which launch
096  // ImportTSV jobs. SEE IntegrationTestImportTsv.
097  public final static String CREDENTIALS_LOCATION = "credentials_location";
098  final static String DEFAULT_SEPARATOR = "\t";
099  final static String DEFAULT_ATTRIBUTES_SEPERATOR = "=>";
100  final static String DEFAULT_MULTIPLE_ATTRIBUTES_SEPERATOR = ",";
101  final static Class DEFAULT_MAPPER = TsvImporterMapper.class;
102  public final static String CREATE_TABLE_CONF_KEY = "create.table";
103  public final static String NO_STRICT_COL_FAMILY = "no.strict";
104  /**
105   * If table didn't exist and was created in dry-run mode, this flag is flipped to delete it when
106   * MR ends.
107   */
108  private static boolean DRY_RUN_TABLE_CREATED;
109
110  public static class TsvParser {
111    /**
112     * Column families and qualifiers mapped to the TSV columns
113     */
114    private final byte[][] families;
115    private final byte[][] qualifiers;
116
117    private final byte separatorByte;
118
119    private int rowKeyColumnIndex;
120
121    private int maxColumnCount;
122
123    // Default value must be negative
124    public static final int DEFAULT_TIMESTAMP_COLUMN_INDEX = -1;
125
126    private int timestampKeyColumnIndex = DEFAULT_TIMESTAMP_COLUMN_INDEX;
127
128    public static final String ROWKEY_COLUMN_SPEC = "HBASE_ROW_KEY";
129
130    public static final String TIMESTAMPKEY_COLUMN_SPEC = "HBASE_TS_KEY";
131
132    public static final String ATTRIBUTES_COLUMN_SPEC = "HBASE_ATTRIBUTES_KEY";
133
134    public static final String CELL_VISIBILITY_COLUMN_SPEC = "HBASE_CELL_VISIBILITY";
135
136    public static final String CELL_TTL_COLUMN_SPEC = "HBASE_CELL_TTL";
137
138    private int attrKeyColumnIndex = DEFAULT_ATTRIBUTES_COLUMN_INDEX;
139
140    public static final int DEFAULT_ATTRIBUTES_COLUMN_INDEX = -1;
141
142    public static final int DEFAULT_CELL_VISIBILITY_COLUMN_INDEX = -1;
143
144    public static final int DEFAULT_CELL_TTL_COLUMN_INDEX = -1;
145
146    private int cellVisibilityColumnIndex = DEFAULT_CELL_VISIBILITY_COLUMN_INDEX;
147
148    private int cellTTLColumnIndex = DEFAULT_CELL_TTL_COLUMN_INDEX;
149
150    /**
151     * @param columnsSpecification the list of columns to parser out, comma separated. The row key
152     *                             should be the special token TsvParser.ROWKEY_COLUMN_SPEC
153     */
154    public TsvParser(String columnsSpecification, String separatorStr) {
155      // Configure separator
156      byte[] separator = Bytes.toBytes(separatorStr);
157      Preconditions.checkArgument(separator.length == 1,
158        "TsvParser only supports single-byte separators");
159      separatorByte = separator[0];
160
161      // Configure columns
162      ArrayList<String> columnStrings =
163        Lists.newArrayList(Splitter.on(',').trimResults().split(columnsSpecification));
164
165      maxColumnCount = columnStrings.size();
166      families = new byte[maxColumnCount][];
167      qualifiers = new byte[maxColumnCount][];
168
169      for (int i = 0; i < columnStrings.size(); i++) {
170        String str = columnStrings.get(i);
171        if (ROWKEY_COLUMN_SPEC.equals(str)) {
172          rowKeyColumnIndex = i;
173          continue;
174        }
175        if (TIMESTAMPKEY_COLUMN_SPEC.equals(str)) {
176          timestampKeyColumnIndex = i;
177          continue;
178        }
179        if (ATTRIBUTES_COLUMN_SPEC.equals(str)) {
180          attrKeyColumnIndex = i;
181          continue;
182        }
183        if (CELL_VISIBILITY_COLUMN_SPEC.equals(str)) {
184          cellVisibilityColumnIndex = i;
185          continue;
186        }
187        if (CELL_TTL_COLUMN_SPEC.equals(str)) {
188          cellTTLColumnIndex = i;
189          continue;
190        }
191        String[] parts = str.split(":", 2);
192        if (parts.length == 1) {
193          families[i] = str.getBytes();
194          qualifiers[i] = HConstants.EMPTY_BYTE_ARRAY;
195        } else {
196          families[i] = parts[0].getBytes();
197          qualifiers[i] = parts[1].getBytes();
198        }
199      }
200    }
201
202    public boolean hasTimestamp() {
203      return timestampKeyColumnIndex != DEFAULT_TIMESTAMP_COLUMN_INDEX;
204    }
205
206    public int getTimestampKeyColumnIndex() {
207      return timestampKeyColumnIndex;
208    }
209
210    public boolean hasAttributes() {
211      return attrKeyColumnIndex != DEFAULT_ATTRIBUTES_COLUMN_INDEX;
212    }
213
214    public boolean hasCellVisibility() {
215      return cellVisibilityColumnIndex != DEFAULT_CELL_VISIBILITY_COLUMN_INDEX;
216    }
217
218    public boolean hasCellTTL() {
219      return cellTTLColumnIndex != DEFAULT_CELL_VISIBILITY_COLUMN_INDEX;
220    }
221
222    public int getAttributesKeyColumnIndex() {
223      return attrKeyColumnIndex;
224    }
225
226    public int getCellVisibilityColumnIndex() {
227      return cellVisibilityColumnIndex;
228    }
229
230    public int getCellTTLColumnIndex() {
231      return cellTTLColumnIndex;
232    }
233
234    public int getRowKeyColumnIndex() {
235      return rowKeyColumnIndex;
236    }
237
238    public byte[] getFamily(int idx) {
239      return families[idx];
240    }
241
242    public byte[] getQualifier(int idx) {
243      return qualifiers[idx];
244    }
245
246    public ParsedLine parse(byte[] lineBytes, int length) throws BadTsvLineException {
247      // Enumerate separator offsets
248      ArrayList<Integer> tabOffsets = new ArrayList<>(maxColumnCount);
249      for (int i = 0; i < length; i++) {
250        if (lineBytes[i] == separatorByte) {
251          tabOffsets.add(i);
252        }
253      }
254      if (tabOffsets.isEmpty()) {
255        throw new BadTsvLineException("No delimiter");
256      }
257
258      tabOffsets.add(length);
259
260      if (tabOffsets.size() > maxColumnCount) {
261        throw new BadTsvLineException("Excessive columns");
262      } else if (tabOffsets.size() <= getRowKeyColumnIndex()) {
263        throw new BadTsvLineException("No row key");
264      } else if (hasTimestamp() && tabOffsets.size() <= getTimestampKeyColumnIndex()) {
265        throw new BadTsvLineException("No timestamp");
266      } else if (hasAttributes() && tabOffsets.size() <= getAttributesKeyColumnIndex()) {
267        throw new BadTsvLineException("No attributes specified");
268      } else if (hasCellVisibility() && tabOffsets.size() <= getCellVisibilityColumnIndex()) {
269        throw new BadTsvLineException("No cell visibility specified");
270      } else if (hasCellTTL() && tabOffsets.size() <= getCellTTLColumnIndex()) {
271        throw new BadTsvLineException("No cell TTL specified");
272      }
273      return new ParsedLine(tabOffsets, lineBytes);
274    }
275
276    class ParsedLine {
277      private final ArrayList<Integer> tabOffsets;
278      private byte[] lineBytes;
279
280      ParsedLine(ArrayList<Integer> tabOffsets, byte[] lineBytes) {
281        this.tabOffsets = tabOffsets;
282        this.lineBytes = lineBytes;
283      }
284
285      public int getRowKeyOffset() {
286        return getColumnOffset(rowKeyColumnIndex);
287      }
288
289      public int getRowKeyLength() {
290        return getColumnLength(rowKeyColumnIndex);
291      }
292
293      public long getTimestamp(long ts) throws BadTsvLineException {
294        // Return ts if HBASE_TS_KEY is not configured in column spec
295        if (!hasTimestamp()) {
296          return ts;
297        }
298
299        String timeStampStr = Bytes.toString(lineBytes, getColumnOffset(timestampKeyColumnIndex),
300          getColumnLength(timestampKeyColumnIndex));
301        try {
302          return Long.parseLong(timeStampStr);
303        } catch (NumberFormatException nfe) {
304          // treat this record as bad record
305          throw new BadTsvLineException("Invalid timestamp " + timeStampStr);
306        }
307      }
308
309      private String getAttributes() {
310        if (!hasAttributes()) {
311          return null;
312        } else {
313          return Bytes.toString(lineBytes, getColumnOffset(attrKeyColumnIndex),
314            getColumnLength(attrKeyColumnIndex));
315        }
316      }
317
318      public String[] getIndividualAttributes() {
319        String attributes = getAttributes();
320        if (attributes != null) {
321          return attributes.split(DEFAULT_MULTIPLE_ATTRIBUTES_SEPERATOR);
322        } else {
323          return null;
324        }
325      }
326
327      public int getAttributeKeyOffset() {
328        if (hasAttributes()) {
329          return getColumnOffset(attrKeyColumnIndex);
330        } else {
331          return DEFAULT_ATTRIBUTES_COLUMN_INDEX;
332        }
333      }
334
335      public int getAttributeKeyLength() {
336        if (hasAttributes()) {
337          return getColumnLength(attrKeyColumnIndex);
338        } else {
339          return DEFAULT_ATTRIBUTES_COLUMN_INDEX;
340        }
341      }
342
343      public int getCellVisibilityColumnOffset() {
344        if (hasCellVisibility()) {
345          return getColumnOffset(cellVisibilityColumnIndex);
346        } else {
347          return DEFAULT_CELL_VISIBILITY_COLUMN_INDEX;
348        }
349      }
350
351      public int getCellVisibilityColumnLength() {
352        if (hasCellVisibility()) {
353          return getColumnLength(cellVisibilityColumnIndex);
354        } else {
355          return DEFAULT_CELL_VISIBILITY_COLUMN_INDEX;
356        }
357      }
358
359      public String getCellVisibility() {
360        if (!hasCellVisibility()) {
361          return null;
362        } else {
363          return Bytes.toString(lineBytes, getColumnOffset(cellVisibilityColumnIndex),
364            getColumnLength(cellVisibilityColumnIndex));
365        }
366      }
367
368      public int getCellTTLColumnOffset() {
369        if (hasCellTTL()) {
370          return getColumnOffset(cellTTLColumnIndex);
371        } else {
372          return DEFAULT_CELL_TTL_COLUMN_INDEX;
373        }
374      }
375
376      public int getCellTTLColumnLength() {
377        if (hasCellTTL()) {
378          return getColumnLength(cellTTLColumnIndex);
379        } else {
380          return DEFAULT_CELL_TTL_COLUMN_INDEX;
381        }
382      }
383
384      public long getCellTTL() {
385        if (!hasCellTTL()) {
386          return 0;
387        } else {
388          return Bytes.toLong(lineBytes, getColumnOffset(cellTTLColumnIndex),
389            getColumnLength(cellTTLColumnIndex));
390        }
391      }
392
393      public int getColumnOffset(int idx) {
394        if (idx > 0) return tabOffsets.get(idx - 1) + 1;
395        else return 0;
396      }
397
398      public int getColumnLength(int idx) {
399        return tabOffsets.get(idx) - getColumnOffset(idx);
400      }
401
402      public int getColumnCount() {
403        return tabOffsets.size();
404      }
405
406      public byte[] getLineBytes() {
407        return lineBytes;
408      }
409    }
410
411    public static class BadTsvLineException extends Exception {
412      public BadTsvLineException(String err) {
413        super(err);
414      }
415
416      private static final long serialVersionUID = 1L;
417    }
418
419    /**
420     * Return starting position and length of row key from the specified line bytes.
421     * @return Pair of row key offset and length.
422     */
423    public Pair<Integer, Integer> parseRowKey(byte[] lineBytes, int length)
424      throws BadTsvLineException {
425      int rkColumnIndex = 0;
426      int startPos = 0, endPos = 0;
427      for (int i = 0; i <= length; i++) {
428        if (i == length || lineBytes[i] == separatorByte) {
429          endPos = i - 1;
430          if (rkColumnIndex++ == getRowKeyColumnIndex()) {
431            if ((endPos + 1) == startPos) {
432              throw new BadTsvLineException("Empty value for ROW KEY.");
433            }
434            break;
435          } else {
436            startPos = endPos + 2;
437          }
438        }
439        if (i == length) {
440          throw new BadTsvLineException("Row key does not exist as number of columns in the line"
441            + " are less than row key position.");
442        }
443      }
444      return new Pair<>(startPos, endPos - startPos + 1);
445    }
446  }
447
448  /**
449   * Sets up the actual job.
450   * @param conf The current configuration.
451   * @param args The command line parameters.
452   * @return The newly created job.
453   * @throws IOException When setting up the job fails.
454   */
455  protected static Job createSubmittableJob(Configuration conf, String[] args)
456    throws IOException, ClassNotFoundException {
457    Job job = null;
458    boolean isDryRun = conf.getBoolean(DRY_RUN_CONF_KEY, false);
459    try (Connection connection = ConnectionFactory.createConnection(conf)) {
460      try (Admin admin = connection.getAdmin()) {
461        // Support non-XML supported characters
462        // by re-encoding the passed separator as a Base64 string.
463        String actualSeparator = conf.get(SEPARATOR_CONF_KEY);
464        if (actualSeparator != null) {
465          conf.set(SEPARATOR_CONF_KEY,
466            Bytes.toString(Base64.getEncoder().encode(actualSeparator.getBytes())));
467        }
468
469        // See if a non-default Mapper was set
470        String mapperClassName = conf.get(MAPPER_CONF_KEY);
471        Class mapperClass =
472          mapperClassName != null ? Class.forName(mapperClassName) : DEFAULT_MAPPER;
473
474        TableName tableName = TableName.valueOf(args[0]);
475        Path inputDir = new Path(args[1]);
476        String jobName = conf.get(JOB_NAME_CONF_KEY, NAME + "_" + tableName.getNameAsString());
477        job = Job.getInstance(conf, jobName);
478        job.setJarByClass(mapperClass);
479        FileInputFormat.setInputPaths(job, inputDir);
480        job.setInputFormatClass(TextInputFormat.class);
481        job.setMapperClass(mapperClass);
482        job.setMapOutputKeyClass(ImmutableBytesWritable.class);
483        String hfileOutPath = conf.get(BULK_OUTPUT_CONF_KEY);
484        String[] columns = conf.getStrings(COLUMNS_CONF_KEY);
485        if (StringUtils.isNotEmpty(conf.get(CREDENTIALS_LOCATION))) {
486          String fileLoc = conf.get(CREDENTIALS_LOCATION);
487          Credentials cred = Credentials.readTokenStorageFile(new File(fileLoc), conf);
488          job.getCredentials().addAll(cred);
489        }
490
491        if (hfileOutPath != null) {
492          if (!admin.tableExists(tableName)) {
493            LOG.warn(format("Table '%s' does not exist.", tableName));
494            if ("yes".equalsIgnoreCase(conf.get(CREATE_TABLE_CONF_KEY, "yes"))) {
495              // TODO: this is backwards. Instead of depending on the existence of a table,
496              // create a sane splits file for HFileOutputFormat based on data sampling.
497              createTable(admin, tableName, columns);
498              if (isDryRun) {
499                LOG.warn("Dry run: Table will be deleted at end of dry run.");
500                synchronized (ImportTsv.class) {
501                  DRY_RUN_TABLE_CREATED = true;
502                }
503              }
504            } else {
505              String errorMsg = format("Table '%s' does not exist and '%s' is set to no.",
506                tableName, CREATE_TABLE_CONF_KEY);
507              LOG.error(errorMsg);
508              throw new TableNotFoundException(errorMsg);
509            }
510          }
511          try (Table table = connection.getTable(tableName);
512            RegionLocator regionLocator = connection.getRegionLocator(tableName)) {
513            boolean noStrict = conf.getBoolean(NO_STRICT_COL_FAMILY, false);
514            // if no.strict is false then check column family
515            if (!noStrict) {
516              ArrayList<String> unmatchedFamilies = new ArrayList<>();
517              Set<String> cfSet = getColumnFamilies(columns);
518              TableDescriptor tDesc = table.getDescriptor();
519              for (String cf : cfSet) {
520                if (!tDesc.hasColumnFamily(Bytes.toBytes(cf))) {
521                  unmatchedFamilies.add(cf);
522                }
523              }
524              if (unmatchedFamilies.size() > 0) {
525                ArrayList<String> familyNames = new ArrayList<>();
526                for (ColumnFamilyDescriptor family : table.getDescriptor().getColumnFamilies()) {
527                  familyNames.add(family.getNameAsString());
528                }
529                String msg = "Column Families " + unmatchedFamilies + " specified in "
530                  + COLUMNS_CONF_KEY + " does not match with any of the table " + tableName
531                  + " column families " + familyNames + ".\n"
532                  + "To disable column family check, use -D" + NO_STRICT_COL_FAMILY + "=true.\n";
533                usage(msg);
534                System.exit(-1);
535              }
536            }
537            if (mapperClass.equals(TsvImporterTextMapper.class)) {
538              job.setMapOutputValueClass(Text.class);
539              job.setReducerClass(TextSortReducer.class);
540            } else {
541              job.setMapOutputValueClass(Put.class);
542              job.setCombinerClass(PutCombiner.class);
543              job.setReducerClass(PutSortReducer.class);
544            }
545            if (!isDryRun) {
546              Path outputDir = new Path(hfileOutPath);
547              FileOutputFormat.setOutputPath(job, outputDir);
548              HFileOutputFormat2.configureIncrementalLoad(job, table.getDescriptor(),
549                regionLocator);
550            }
551          }
552        } else {
553          if (!admin.tableExists(tableName)) {
554            String errorMsg = format("Table '%s' does not exist.", tableName);
555            LOG.error(errorMsg);
556            throw new TableNotFoundException(errorMsg);
557          }
558          try (Table table = connection.getTable(tableName)) {
559            ArrayList<String> unmatchedFamilies = new ArrayList<>();
560            Set<String> cfSet = getColumnFamilies(columns);
561            TableDescriptor tDesc = table.getDescriptor();
562            for (String cf : cfSet) {
563              if (!tDesc.hasColumnFamily(Bytes.toBytes(cf))) {
564                unmatchedFamilies.add(cf);
565              }
566            }
567            if (unmatchedFamilies.size() > 0) {
568              String noSuchColumnFamiliesMsg =
569                format("Column families: %s do not exist.", unmatchedFamilies);
570              LOG.error(noSuchColumnFamiliesMsg);
571              throw new NoSuchColumnFamilyException(noSuchColumnFamiliesMsg);
572            }
573          }
574          if (mapperClass.equals(TsvImporterTextMapper.class)) {
575            usage(TsvImporterTextMapper.class.toString()
576              + " should not be used for non bulkloading case. use "
577              + TsvImporterMapper.class.toString() + " or custom mapper whose value type is Put.");
578            System.exit(-1);
579          }
580          if (!isDryRun) {
581            // No reducers. Just write straight to table. Call initTableReducerJob
582            // to set up the TableOutputFormat.
583            TableMapReduceUtil.initTableReducerJob(tableName.getNameAsString(), null, job);
584          }
585          job.setNumReduceTasks(0);
586        }
587        if (isDryRun) {
588          job.setOutputFormatClass(NullOutputFormat.class);
589          job.getConfiguration().setStrings("io.serializations",
590            job.getConfiguration().get("io.serializations"), MutationSerialization.class.getName(),
591            ResultSerialization.class.getName(), CellSerialization.class.getName());
592        }
593        TableMapReduceUtil.addDependencyJars(job);
594        TableMapReduceUtil.addDependencyJarsForClasses(job.getConfiguration(),
595          org.apache.hbase.thirdparty.com.google.common.base.Function.class /*
596                                                                             * Guava used by
597                                                                             * TsvParser
598                                                                             */);
599      }
600    }
601    return job;
602  }
603
604  private static void createTable(Admin admin, TableName tableName, String[] columns)
605    throws IOException {
606    HTableDescriptor htd = new HTableDescriptor(tableName);
607    Set<String> cfSet = getColumnFamilies(columns);
608    for (String cf : cfSet) {
609      HColumnDescriptor hcd = new HColumnDescriptor(Bytes.toBytes(cf));
610      htd.addFamily(hcd);
611    }
612    LOG.warn(
613      format("Creating table '%s' with '%s' columns and default descriptors.", tableName, cfSet));
614    admin.createTable(htd);
615  }
616
617  private static void deleteTable(Configuration conf, String[] args) {
618    TableName tableName = TableName.valueOf(args[0]);
619    try (Connection connection = ConnectionFactory.createConnection(conf);
620      Admin admin = connection.getAdmin()) {
621      try {
622        admin.disableTable(tableName);
623      } catch (TableNotEnabledException e) {
624        LOG.debug("Dry mode: Table: " + tableName + " already disabled, so just deleting it.");
625      }
626      admin.deleteTable(tableName);
627    } catch (IOException e) {
628      LOG.error(format("***Dry run: Failed to delete table '%s'.***%n%s", tableName, e.toString()));
629      return;
630    }
631    LOG.info(format("Dry run: Deleted table '%s'.", tableName));
632  }
633
634  private static Set<String> getColumnFamilies(String[] columns) {
635    Set<String> cfSet = new HashSet<>();
636    for (String aColumn : columns) {
637      if (
638        TsvParser.ROWKEY_COLUMN_SPEC.equals(aColumn)
639          || TsvParser.TIMESTAMPKEY_COLUMN_SPEC.equals(aColumn)
640          || TsvParser.CELL_VISIBILITY_COLUMN_SPEC.equals(aColumn)
641          || TsvParser.CELL_TTL_COLUMN_SPEC.equals(aColumn)
642          || TsvParser.ATTRIBUTES_COLUMN_SPEC.equals(aColumn)
643      ) continue;
644      // we are only concerned with the first one (in case this is a cf:cq)
645      cfSet.add(aColumn.split(":", 2)[0]);
646    }
647    return cfSet;
648  }
649
650  /*
651   * @param errorMsg Error message. Can be null.
652   */
653  private static void usage(final String errorMsg) {
654    if (errorMsg != null && errorMsg.length() > 0) {
655      System.err.println("ERROR: " + errorMsg);
656    }
657    String usage = "Usage: " + NAME + " -D" + COLUMNS_CONF_KEY + "=a,b,c <tablename> <inputdir>\n"
658      + "\n" + "Imports the given input directory of TSV data into the specified table.\n" + "\n"
659      + "The column names of the TSV data must be specified using the -D" + COLUMNS_CONF_KEY + "\n"
660      + "option. This option takes the form of comma-separated column names, where each\n"
661      + "column name is either a simple column family, or a columnfamily:qualifier. The special\n"
662      + "column name " + TsvParser.ROWKEY_COLUMN_SPEC
663      + " is used to designate that this column should be used\n"
664      + "as the row key for each imported record. You must specify exactly one column\n"
665      + "to be the row key, and you must specify a column name for every column that exists in the\n"
666      + "input data. Another special column" + TsvParser.TIMESTAMPKEY_COLUMN_SPEC
667      + " designates that this column should be\n" + "used as timestamp for each record. Unlike "
668      + TsvParser.ROWKEY_COLUMN_SPEC + ", " + TsvParser.TIMESTAMPKEY_COLUMN_SPEC + " is optional."
669      + "\n" + "You must specify at most one column as timestamp key for each imported record.\n"
670      + "Record with invalid timestamps (blank, non-numeric) will be treated as bad record.\n"
671      + "Note: if you use this option, then '" + TIMESTAMP_CONF_KEY + "' option will be ignored.\n"
672      + "\n" + "Other special columns that can be specified are " + TsvParser.CELL_TTL_COLUMN_SPEC
673      + " and " + TsvParser.CELL_VISIBILITY_COLUMN_SPEC + ".\n" + TsvParser.CELL_TTL_COLUMN_SPEC
674      + " designates that this column will be used " + "as a Cell's Time To Live (TTL) attribute.\n"
675      + TsvParser.CELL_VISIBILITY_COLUMN_SPEC + " designates that this column contains the "
676      + "visibility label expression.\n" + "\n" + TsvParser.ATTRIBUTES_COLUMN_SPEC
677      + " can be used to specify Operation Attributes per record.\n"
678      + " Should be specified as key=>value where " + TsvParser.DEFAULT_ATTRIBUTES_COLUMN_INDEX
679      + " is used \n"
680      + " as the seperator.  Note that more than one OperationAttributes can be specified.\n"
681      + "By default importtsv will load data directly into HBase. To instead generate\n"
682      + "HFiles of data to prepare for a bulk data load, pass the option:\n" + "  -D"
683      + BULK_OUTPUT_CONF_KEY + "=/path/for/output\n"
684      + "  Note: if you do not use this option, then the target table must already exist in HBase\n"
685      + "\n" + "Other options that may be specified with -D include:\n" + "  -D" + DRY_RUN_CONF_KEY
686      + "=true - Dry run mode. Data is not actually populated into"
687      + " table. If table does not exist, it is created but deleted in the end.\n" + "  -D"
688      + SKIP_LINES_CONF_KEY + "=false - fail if encountering an invalid line\n" + "  -D"
689      + LOG_BAD_LINES_CONF_KEY + "=true - logs invalid lines to stderr\n" + "  -D"
690      + SKIP_EMPTY_COLUMNS + "=false - If true then skip empty columns in bulk import\n" + "  '-D"
691      + SEPARATOR_CONF_KEY + "=|' - eg separate on pipes instead of tabs\n" + "  -D"
692      + TIMESTAMP_CONF_KEY + "=currentTimeAsLong - use the specified timestamp for the import\n"
693      + "  -D" + MAPPER_CONF_KEY + "=my.Mapper - A user-defined Mapper to use instead of "
694      + DEFAULT_MAPPER.getName() + "\n" + "  -D" + JOB_NAME_CONF_KEY
695      + "=jobName - use the specified mapreduce job name for the import\n" + "  -D"
696      + CREATE_TABLE_CONF_KEY + "=no - can be used to avoid creation of table by this tool\n"
697      + "  Note: if you set this to 'no', then the target table must already exist in HBase\n"
698      + "  -D" + NO_STRICT_COL_FAMILY + "=true - ignore column family check in hbase table. "
699      + "Default is false\n\n" + "For performance consider the following options:\n"
700      + "  -Dmapreduce.map.speculative=false\n" + "  -Dmapreduce.reduce.speculative=false";
701
702    System.err.println(usage);
703  }
704
705  @Override
706  public int run(String[] args) throws Exception {
707    if (args.length < 2) {
708      usage("Wrong number of arguments: " + args.length);
709      return -1;
710    }
711
712    // When MAPPER_CONF_KEY is null, the user wants to use the provided TsvImporterMapper, so
713    // perform validation on these additional args. When it's not null, user has provided their
714    // own mapper, thus these validation are not relevant.
715    // TODO: validation for TsvImporterMapper, not this tool. Move elsewhere.
716    if (null == getConf().get(MAPPER_CONF_KEY)) {
717      // Make sure columns are specified
718      String[] columns = getConf().getStrings(COLUMNS_CONF_KEY);
719      if (columns == null) {
720        usage("No columns specified. Please specify with -D" + COLUMNS_CONF_KEY + "=...");
721        return -1;
722      }
723
724      // Make sure they specify exactly one column as the row key
725      int rowkeysFound = 0;
726      for (String col : columns) {
727        if (col.equals(TsvParser.ROWKEY_COLUMN_SPEC)) rowkeysFound++;
728      }
729      if (rowkeysFound != 1) {
730        usage("Must specify exactly one column as " + TsvParser.ROWKEY_COLUMN_SPEC);
731        return -1;
732      }
733
734      // Make sure we have at most one column as the timestamp key
735      int tskeysFound = 0;
736      for (String col : columns) {
737        if (col.equals(TsvParser.TIMESTAMPKEY_COLUMN_SPEC)) tskeysFound++;
738      }
739      if (tskeysFound > 1) {
740        usage("Must specify at most one column as " + TsvParser.TIMESTAMPKEY_COLUMN_SPEC);
741        return -1;
742      }
743
744      int attrKeysFound = 0;
745      for (String col : columns) {
746        if (col.equals(TsvParser.ATTRIBUTES_COLUMN_SPEC)) attrKeysFound++;
747      }
748      if (attrKeysFound > 1) {
749        usage("Must specify at most one column as " + TsvParser.ATTRIBUTES_COLUMN_SPEC);
750        return -1;
751      }
752
753      // Make sure one or more columns are specified excluding rowkey and
754      // timestamp key
755      if (columns.length - (rowkeysFound + tskeysFound + attrKeysFound) < 1) {
756        usage(
757          "One or more columns in addition to the row key and timestamp(optional) are required");
758        return -1;
759      }
760    }
761
762    // If timestamp option is not specified, use current system time.
763    long timstamp = getConf().getLong(TIMESTAMP_CONF_KEY, EnvironmentEdgeManager.currentTime());
764
765    // Set it back to replace invalid timestamp (non-numeric) with current
766    // system time
767    getConf().setLong(TIMESTAMP_CONF_KEY, timstamp);
768
769    synchronized (ImportTsv.class) {
770      DRY_RUN_TABLE_CREATED = false;
771    }
772    Job job = createSubmittableJob(getConf(), args);
773    boolean success = job.waitForCompletion(true);
774    boolean delete = false;
775    synchronized (ImportTsv.class) {
776      delete = DRY_RUN_TABLE_CREATED;
777    }
778    if (delete) {
779      deleteTable(getConf(), args);
780    }
781    return success ? 0 : 1;
782  }
783
784  public static void main(String[] args) throws Exception {
785    int status = ToolRunner.run(HBaseConfiguration.create(), new ImportTsv(), args);
786    System.exit(status);
787  }
788}