Java tutorial
/** * 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 * <p> * http://www.apache.org/licenses/LICENSE-2.0 * <p> * 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. */ import com.google.common.base.Preconditions; import com.google.common.base.Splitter; import com.google.common.collect.Lists; import org.apache.commons.lang.StringUtils; import org.apache.commons.logging.Log; import org.apache.commons.logging.LogFactory; import org.apache.hadoop.conf.Configuration; import org.apache.hadoop.conf.Configured; import org.apache.hadoop.fs.Path; import org.apache.hadoop.hbase.*; import org.apache.hadoop.hbase.classification.InterfaceAudience; import org.apache.hadoop.hbase.classification.InterfaceStability; import org.apache.hadoop.hbase.client.*; import org.apache.hadoop.hbase.io.ImmutableBytesWritable; import org.apache.hadoop.hbase.mapreduce.*; import org.apache.hadoop.hbase.util.Base64; import org.apache.hadoop.hbase.util.Bytes; import org.apache.hadoop.hbase.util.Pair; import org.apache.hadoop.io.Text; import org.apache.hadoop.mapreduce.Job; import org.apache.hadoop.mapreduce.lib.input.FileInputFormat; import org.apache.hadoop.mapreduce.lib.input.TextInputFormat; import org.apache.hadoop.mapreduce.lib.output.FileOutputFormat; import org.apache.hadoop.security.Credentials; import org.apache.hadoop.util.GenericOptionsParser; import org.apache.hadoop.util.Tool; import org.apache.hadoop.util.ToolRunner; import java.io.File; import java.io.IOException; import java.util.ArrayList; import java.util.HashSet; import java.util.Set; import static java.lang.String.format; /** * Tool to import data from a TSV file. * <p> * This tool is rather simplistic - it doesn't do any quoting or * escaping, but is useful for many data loads. * * @see ImportTsv#usage(String) */ /** * Created by linghang.kong on 2017/3/30. */ @InterfaceAudience.Public @InterfaceStability.Stable public class ImportTsv extends Configured implements Tool { protected static final Log LOG = LogFactory.getLog(ImportTsv.class); final static String NAME = "importtsv"; public final static String MAPPER_CONF_KEY = "importtsv.mapper.class"; public final static String BULK_OUTPUT_CONF_KEY = "importtsv.bulk.output"; public final static String TIMESTAMP_CONF_KEY = "importtsv.timestamp"; public final static String JOB_NAME_CONF_KEY = "mapreduce.job.name"; // TODO: the rest of these configs are used exclusively by TsvImporterMapper. // Move them out of the tool and let the mapper handle its own validation. public final static String SKIP_LINES_CONF_KEY = "importtsv.skip.bad.lines"; public final static String COLUMNS_CONF_KEY = "importtsv.columns"; public final static String SEPARATOR_CONF_KEY = "importtsv.separator"; public final static String ATTRIBUTE_SEPERATOR_CONF_KEY = "attributes.seperator"; //This config is used to propagate credentials from parent MR jobs which launch //ImportTSV jobs. SEE IntegrationTestImportTsv. public final static String CREDENTIALS_LOCATION = "credentials_location"; final static String DEFAULT_SEPARATOR = "\t"; final static String DEFAULT_ATTRIBUTES_SEPERATOR = "=>"; final static String DEFAULT_MULTIPLE_ATTRIBUTES_SEPERATOR = ","; final static Class DEFAULT_MAPPER = TsvImporterMapper.class; public final static String CREATE_TABLE_CONF_KEY = "create.table"; public final static String NO_STRICT_COL_FAMILY = "no.strict"; // define-self params to filter public final static String EASTCOM_FILTER_PARAMS = "importtsv.filter.params"; public final static String EASTCOM_FILTER_DEFINE = "importtsv.filter.define.class"; public static class TsvParser { /** * Column families and qualifiers mapped to the TSV columns */ private final byte[][] families; private final byte[][] qualifiers; private final byte separatorByte; private int rowKeyColumnIndex; private int maxColumnCount; // Default value must be negative public static final int DEFAULT_TIMESTAMP_COLUMN_INDEX = -1; private int timestampKeyColumnIndex = DEFAULT_TIMESTAMP_COLUMN_INDEX; public static final String ROWKEY_COLUMN_SPEC = "HBASE_ROW_KEY"; public static final String TIMESTAMPKEY_COLUMN_SPEC = "HBASE_TS_KEY"; public static final String ATTRIBUTES_COLUMN_SPEC = "HBASE_ATTRIBUTES_KEY"; public static final String CELL_VISIBILITY_COLUMN_SPEC = "HBASE_CELL_VISIBILITY"; public static final String CELL_TTL_COLUMN_SPEC = "HBASE_CELL_TTL"; private int attrKeyColumnIndex = DEFAULT_ATTRIBUTES_COLUMN_INDEX; public static final int DEFAULT_ATTRIBUTES_COLUMN_INDEX = -1; public static final int DEFAULT_CELL_VISIBILITY_COLUMN_INDEX = -1; public static final int DEFAULT_CELL_TTL_COLUMN_INDEX = -1; private int cellVisibilityColumnIndex = DEFAULT_CELL_VISIBILITY_COLUMN_INDEX; private int cellTTLColumnIndex = DEFAULT_CELL_TTL_COLUMN_INDEX; /** * @param columnsSpecification the list of columns to parser out, comma separated. * The row key should be the special token TsvParser.ROWKEY_COLUMN_SPEC * @param separatorStr */ public TsvParser(String columnsSpecification, String separatorStr) { // Configure separator byte[] separator = Bytes.toBytes(separatorStr); Preconditions.checkArgument(separator.length == 1, "TsvParser only supports single-byte separators"); separatorByte = separator[0]; // Configure columns ArrayList<String> columnStrings = Lists .newArrayList(Splitter.on(',').trimResults().split(columnsSpecification)); maxColumnCount = columnStrings.size(); families = new byte[maxColumnCount][]; qualifiers = new byte[maxColumnCount][]; for (int i = 0; i < columnStrings.size(); i++) { String str = columnStrings.get(i); if (ROWKEY_COLUMN_SPEC.equals(str)) { rowKeyColumnIndex = i; continue; } if (TIMESTAMPKEY_COLUMN_SPEC.equals(str)) { timestampKeyColumnIndex = i; continue; } if (ATTRIBUTES_COLUMN_SPEC.equals(str)) { attrKeyColumnIndex = i; continue; } if (CELL_VISIBILITY_COLUMN_SPEC.equals(str)) { cellVisibilityColumnIndex = i; continue; } if (CELL_TTL_COLUMN_SPEC.equals(str)) { cellTTLColumnIndex = i; continue; } String[] parts = str.split(":", 2); if (parts.length == 1) { families[i] = str.getBytes(); qualifiers[i] = HConstants.EMPTY_BYTE_ARRAY; } else { families[i] = parts[0].getBytes(); qualifiers[i] = parts[1].getBytes(); } } } public boolean hasTimestamp() { return timestampKeyColumnIndex != DEFAULT_TIMESTAMP_COLUMN_INDEX; } public int getTimestampKeyColumnIndex() { return timestampKeyColumnIndex; } public boolean hasAttributes() { return attrKeyColumnIndex != DEFAULT_ATTRIBUTES_COLUMN_INDEX; } public boolean hasCellVisibility() { return cellVisibilityColumnIndex != DEFAULT_CELL_VISIBILITY_COLUMN_INDEX; } public boolean hasCellTTL() { return cellTTLColumnIndex != DEFAULT_CELL_VISIBILITY_COLUMN_INDEX; } public int getAttributesKeyColumnIndex() { return attrKeyColumnIndex; } public int getCellVisibilityColumnIndex() { return cellVisibilityColumnIndex; } public int getCellTTLColumnIndex() { return cellTTLColumnIndex; } public int getRowKeyColumnIndex() { return rowKeyColumnIndex; } public byte[] getFamily(int idx) { return families[idx]; } public byte[] getQualifier(int idx) { return qualifiers[idx]; } public ParsedLine parse(byte[] lineBytes, int length) throws BadTsvLineException { // Enumerate separator offsets ArrayList<Integer> tabOffsets = new ArrayList<Integer>(maxColumnCount); for (int i = 0; i < length; i++) { if (lineBytes[i] == separatorByte) { tabOffsets.add(i); } } if (tabOffsets.isEmpty()) { throw new BadTsvLineException("No delimiter"); } tabOffsets.add(length); if (tabOffsets.size() > maxColumnCount) { throw new BadTsvLineException("Excessive columns"); } else if (tabOffsets.size() <= getRowKeyColumnIndex()) { throw new BadTsvLineException("No row key"); } else if (hasTimestamp() && tabOffsets.size() <= getTimestampKeyColumnIndex()) { throw new BadTsvLineException("No timestamp"); } else if (hasAttributes() && tabOffsets.size() <= getAttributesKeyColumnIndex()) { throw new BadTsvLineException("No attributes specified"); } else if (hasCellVisibility() && tabOffsets.size() <= getCellVisibilityColumnIndex()) { throw new BadTsvLineException("No cell visibility specified"); } else if (hasCellTTL() && tabOffsets.size() <= getCellTTLColumnIndex()) { throw new BadTsvLineException("No cell TTL specified"); } return new ParsedLine(tabOffsets, lineBytes); } class ParsedLine { private final ArrayList<Integer> tabOffsets; private byte[] lineBytes; ParsedLine(ArrayList<Integer> tabOffsets, byte[] lineBytes) { this.tabOffsets = tabOffsets; this.lineBytes = lineBytes; } public int getRowKeyOffset() { return getColumnOffset(rowKeyColumnIndex); } public int getRowKeyLength() { return getColumnLength(rowKeyColumnIndex); } public long getTimestamp(long ts) throws BadTsvLineException { // Return ts if HBASE_TS_KEY is not configured in column spec if (!hasTimestamp()) { return ts; } String timeStampStr = Bytes.toString(lineBytes, getColumnOffset(timestampKeyColumnIndex), getColumnLength(timestampKeyColumnIndex)); try { return Long.parseLong(timeStampStr); } catch (NumberFormatException nfe) { // treat this record as bad record throw new BadTsvLineException("Invalid timestamp " + timeStampStr); } } private String getAttributes() { if (!hasAttributes()) { return null; } else { return Bytes.toString(lineBytes, getColumnOffset(attrKeyColumnIndex), getColumnLength(attrKeyColumnIndex)); } } public String[] getIndividualAttributes() { String attributes = getAttributes(); if (attributes != null) { return attributes.split(DEFAULT_MULTIPLE_ATTRIBUTES_SEPERATOR); } else { return null; } } public int getAttributeKeyOffset() { if (hasAttributes()) { return getColumnOffset(attrKeyColumnIndex); } else { return DEFAULT_ATTRIBUTES_COLUMN_INDEX; } } public int getAttributeKeyLength() { if (hasAttributes()) { return getColumnLength(attrKeyColumnIndex); } else { return DEFAULT_ATTRIBUTES_COLUMN_INDEX; } } public int getCellVisibilityColumnOffset() { if (hasCellVisibility()) { return getColumnOffset(cellVisibilityColumnIndex); } else { return DEFAULT_CELL_VISIBILITY_COLUMN_INDEX; } } public int getCellVisibilityColumnLength() { if (hasCellVisibility()) { return getColumnLength(cellVisibilityColumnIndex); } else { return DEFAULT_CELL_VISIBILITY_COLUMN_INDEX; } } public String getCellVisibility() { if (!hasCellVisibility()) { return null; } else { return Bytes.toString(lineBytes, getColumnOffset(cellVisibilityColumnIndex), getColumnLength(cellVisibilityColumnIndex)); } } public int getCellTTLColumnOffset() { if (hasCellTTL()) { return getColumnOffset(cellTTLColumnIndex); } else { return DEFAULT_CELL_TTL_COLUMN_INDEX; } } public int getCellTTLColumnLength() { if (hasCellTTL()) { return getColumnLength(cellTTLColumnIndex); } else { return DEFAULT_CELL_TTL_COLUMN_INDEX; } } public long getCellTTL() { if (!hasCellTTL()) { return 0; } else { return Bytes.toLong(lineBytes, getColumnOffset(cellTTLColumnIndex), getColumnLength(cellTTLColumnIndex)); } } public int getColumnOffset(int idx) { if (idx > 0) return tabOffsets.get(idx - 1) + 1; else return 0; } public int getColumnLength(int idx) { return tabOffsets.get(idx) - getColumnOffset(idx); } public int getColumnCount() { return tabOffsets.size(); } public byte[] getLineBytes() { return lineBytes; } } public static class BadTsvLineException extends Exception { public BadTsvLineException(String err) { super(err); } private static final long serialVersionUID = 1L; } /** * Return starting position and length of row key from the specified line bytes. * @param lineBytes * @param length * @return Pair of row key offset and length. * @throws BadTsvLineException */ public Pair<Integer, Integer> parseRowKey(byte[] lineBytes, int length) throws BadTsvLineException { int rkColumnIndex = 0; int startPos = 0, endPos = 0; for (int i = 0; i <= length; i++) { if (i == length || lineBytes[i] == separatorByte) { endPos = i - 1; if (rkColumnIndex++ == getRowKeyColumnIndex()) { if ((endPos + 1) == startPos) { throw new BadTsvLineException("Empty value for ROW KEY."); } break; } else { startPos = endPos + 2; } } if (i == length) { throw new BadTsvLineException("Row key does not exist as number of columns in the line" + " are less than row key position."); } } return new Pair<Integer, Integer>(startPos, endPos - startPos + 1); } } /** * Sets up the actual job. * * @param conf The current configuration. * @param args The command line parameters. * @return The newly created job. * @throws IOException When setting up the job fails. */ public static Job createSubmittableJob(Configuration conf, String[] args) throws IOException, ClassNotFoundException { Job job = null; try (Connection connection = ConnectionFactory.createConnection(conf)) { try (Admin admin = connection.getAdmin()) { // Support non-XML supported characters // by re-encoding the passed separator as a Base64 string. String actualSeparator = conf.get(SEPARATOR_CONF_KEY); if (actualSeparator != null) { conf.set(SEPARATOR_CONF_KEY, Base64.encodeBytes(actualSeparator.getBytes())); } // See if a non-default Mapper was set String mapperClassName = conf.get(MAPPER_CONF_KEY); Class mapperClass = mapperClassName != null ? Class.forName(mapperClassName) : DEFAULT_MAPPER; TableName tableName = TableName.valueOf(args[0]); Path inputDir = new Path(args[1]); // set filter conf.set(EASTCOM_FILTER_PARAMS, args[3]); conf.set(EASTCOM_FILTER_DEFINE, args[4]); String jobName = conf.get(JOB_NAME_CONF_KEY, NAME + "_" + tableName.getNameAsString()); job = Job.getInstance(conf, jobName); job.setJarByClass(mapperClass); FileInputFormat.setInputPaths(job, inputDir); job.setInputFormatClass(TextInputFormat.class); job.setMapperClass(mapperClass); String hfileOutPath = conf.get(BULK_OUTPUT_CONF_KEY); String columns[] = conf.getStrings(COLUMNS_CONF_KEY); if (StringUtils.isNotEmpty(conf.get(CREDENTIALS_LOCATION))) { String fileLoc = conf.get(CREDENTIALS_LOCATION); Credentials cred = Credentials.readTokenStorageFile(new File(fileLoc), conf); job.getCredentials().addAll(cred); } if (hfileOutPath != null) { if (!admin.tableExists(tableName)) { String errorMsg = format("Table '%s' does not exist.", tableName); if ("yes".equalsIgnoreCase(conf.get(CREATE_TABLE_CONF_KEY, "yes"))) { LOG.warn(errorMsg); // TODO: this is backwards. Instead of depending on the existence of a table, // create a sane splits file for HFileOutputFormat based on data sampling. createTable(admin, tableName, columns); } else { LOG.error(errorMsg); throw new TableNotFoundException(errorMsg); } } try (HTable table = (HTable) connection.getTable(tableName)) { boolean noStrict = conf.getBoolean(NO_STRICT_COL_FAMILY, false); // if no.strict is false then check column family if (!noStrict) { ArrayList<String> unmatchedFamilies = new ArrayList<String>(); Set<String> cfSet = getColumnFamilies(columns); HTableDescriptor tDesc = table.getTableDescriptor(); for (String cf : cfSet) { if (tDesc.getFamily(Bytes.toBytes(cf)) == null) { unmatchedFamilies.add(cf); } } if (unmatchedFamilies.size() > 0) { ArrayList<String> familyNames = new ArrayList<String>(); for (HColumnDescriptor family : table.getTableDescriptor().getFamilies()) { familyNames.add(family.getNameAsString()); } String msg = "Column Families " + unmatchedFamilies + " specified in " + COLUMNS_CONF_KEY + " does not match with any of the table " + tableName + " column families " + familyNames + ".\n" + "To disable column family check, use -D" + NO_STRICT_COL_FAMILY + "=true.\n"; usage(msg); System.exit(-1); } } job.setReducerClass(PutSortReducer.class); Path outputDir = new Path(hfileOutPath); FileOutputFormat.setOutputPath(job, outputDir); job.setMapOutputKeyClass(ImmutableBytesWritable.class); if (mapperClass.equals(TsvImporterTextMapper.class)) { job.setMapOutputValueClass(Text.class); job.setReducerClass(TextSortReducer.class); } else { job.setMapOutputValueClass(Put.class); job.setCombinerClass(PutCombiner.class); } HFileOutputFormat2.configureIncrementalLoad(job, table, table); } } else { if (!admin.tableExists(tableName)) { String errorMsg = format("Table '%s' does not exist.", tableName); LOG.error(errorMsg); throw new TableNotFoundException(errorMsg); } if (mapperClass.equals(TsvImporterTextMapper.class)) { usage(TsvImporterTextMapper.class.toString() + " should not be used for non bulkloading case. use " + TsvImporterMapper.class.toString() + " or custom mapper whose value type is Put."); System.exit(-1); } // No reducers. Just write straight to table. Call initTableReducerJob // to set up the TableOutputFormat. TableMapReduceUtil.initTableReducerJob(tableName.getNameAsString(), null, job); job.setNumReduceTasks(0); } TableMapReduceUtil.addDependencyJars(job); TableMapReduceUtil.addDependencyJars(job.getConfiguration(), com.google.common.base.Function.class /* Guava used by TsvParser */); } } return job; } private static void createTable(Admin admin, TableName tableName, String[] columns) throws IOException { HTableDescriptor htd = new HTableDescriptor(tableName); Set<String> cfSet = getColumnFamilies(columns); for (String cf : cfSet) { HColumnDescriptor hcd = new HColumnDescriptor(Bytes.toBytes(cf)); htd.addFamily(hcd); } LOG.warn(format("Creating table '%s' with '%s' columns and default descriptors.", tableName, cfSet)); admin.createTable(htd); } private static Set<String> getColumnFamilies(String[] columns) { Set<String> cfSet = new HashSet<String>(); for (String aColumn : columns) { if (TsvParser.ROWKEY_COLUMN_SPEC.equals(aColumn) || TsvParser.TIMESTAMPKEY_COLUMN_SPEC.equals(aColumn) || TsvParser.CELL_VISIBILITY_COLUMN_SPEC.equals(aColumn) || TsvParser.CELL_TTL_COLUMN_SPEC.equals(aColumn) || TsvParser.ATTRIBUTES_COLUMN_SPEC.equals(aColumn)) continue; // we are only concerned with the first one (in case this is a cf:cq) cfSet.add(aColumn.split(":", 2)[0]); } return cfSet; } /* * @param errorMsg Error message. Can be null. */ private static void usage(final String errorMsg) { if (errorMsg != null && errorMsg.length() > 0) { System.err.println("ERROR: " + errorMsg); } String usage = "Usage: " + NAME + " -D" + COLUMNS_CONF_KEY + "=a,b,c <tablename> <inputdir>\n" + "\n" + "Imports the given input directory of TSV data into the specified table.\n" + "\n" + "The column names of the TSV data must be specified using the -D" + COLUMNS_CONF_KEY + "\n" + "option. This option takes the form of comma-separated column names, where each\n" + "column name is either a simple column family, or a columnfamily:qualifier. The special\n" + "column name " + TsvParser.ROWKEY_COLUMN_SPEC + " is used to designate that this column should be used\n" + "as the row key for each imported record. You must specify exactly one column\n" + "to be the row key, and you must specify a column name for every column that exists in the\n" + "input data. Another special column" + TsvParser.TIMESTAMPKEY_COLUMN_SPEC + " designates that this column should be\n" + "used as timestamp for each record. Unlike " + TsvParser.ROWKEY_COLUMN_SPEC + ", " + TsvParser.TIMESTAMPKEY_COLUMN_SPEC + " is optional.\n" + "You must specify at most one column as timestamp key for each imported record.\n" + "Record with invalid timestamps (blank, non-numeric) will be treated as bad record.\n" + "Note: if you use this option, then '" + TIMESTAMP_CONF_KEY + "' option will be ignored.\n" + "\n" + TsvParser.ATTRIBUTES_COLUMN_SPEC + " can be used to specify Operation Attributes per record.\n" + " Should be specified as key=>value where " + TsvParser.DEFAULT_ATTRIBUTES_COLUMN_INDEX + " is used \n" + " as the seperator. Note that more than one OperationAttributes can be specified.\n" + "By default importtsv will load data directly into HBase. To instead generate\n" + "HFiles of data to prepare for a bulk data load, pass the option:\n" + " -D" + BULK_OUTPUT_CONF_KEY + "=/path/for/output\n" + " Note: if you do not use this option, then the target table must already exist in HBase\n" + "\n" + "Other options that may be specified with -D include:\n" + " -D" + SKIP_LINES_CONF_KEY + "=false - fail if encountering an invalid line\n" + " '-D" + SEPARATOR_CONF_KEY + "=|' - eg separate on pipes instead of tabs\n" + " -D" + TIMESTAMP_CONF_KEY + "=currentTimeAsLong - use the specified timestamp for the import\n" + " -D" + MAPPER_CONF_KEY + "=my.Mapper - A user-defined Mapper to use instead of " + DEFAULT_MAPPER.getName() + "\n" + " -D" + JOB_NAME_CONF_KEY + "=jobName - use the specified mapreduce job name for the import\n" + " -D" + CREATE_TABLE_CONF_KEY + "=no - can be used to avoid creation of table by this tool\n" + " Note: if you set this to 'no', then the target table must already exist in HBase\n" + " -D" + NO_STRICT_COL_FAMILY + "=true - ignore column family check in hbase table. " + "Default is false\n\n" + "For performance consider the following options:\n" + " -Dmapreduce.map.speculative=false\n" + " -Dmapreduce.reduce.speculative=false"; System.err.println(usage); } @Override public int run(String[] args) throws Exception { setConf(HBaseConfiguration.create(getConf())); String[] otherArgs = new GenericOptionsParser(getConf(), args).getRemainingArgs(); if (otherArgs.length < 2) { usage("Wrong number of arguments: " + otherArgs.length); return -1; } // When MAPPER_CONF_KEY is null, the user wants to use the provided TsvImporterMapper, so // perform validation on these additional args. When it's not null, user has provided their // own mapper, thus these validation are not relevant. // TODO: validation for TsvImporterMapper, not this tool. Move elsewhere. if (null == getConf().get(MAPPER_CONF_KEY)) { // Make sure columns are specified String columns[] = getConf().getStrings(COLUMNS_CONF_KEY); if (columns == null) { usage("No columns specified. Please specify with -D" + COLUMNS_CONF_KEY + "=..."); return -1; } // Make sure they specify exactly one column as the row key int rowkeysFound = 0; for (String col : columns) { if (col.equals(TsvParser.ROWKEY_COLUMN_SPEC)) rowkeysFound++; } if (rowkeysFound != 1) { usage("Must specify exactly one column as " + TsvParser.ROWKEY_COLUMN_SPEC); return -1; } // Make sure we have at most one column as the timestamp key int tskeysFound = 0; for (String col : columns) { if (col.equals(TsvParser.TIMESTAMPKEY_COLUMN_SPEC)) tskeysFound++; } if (tskeysFound > 1) { usage("Must specify at most one column as " + TsvParser.TIMESTAMPKEY_COLUMN_SPEC); return -1; } int attrKeysFound = 0; for (String col : columns) { if (col.equals(TsvParser.ATTRIBUTES_COLUMN_SPEC)) attrKeysFound++; } if (attrKeysFound > 1) { usage("Must specify at most one column as " + TsvParser.ATTRIBUTES_COLUMN_SPEC); return -1; } // Make sure one or more columns are specified excluding rowkey and // timestamp key if (columns.length - (rowkeysFound + tskeysFound + attrKeysFound) < 1) { usage("One or more columns in addition to the row key and timestamp(optional) are required"); return -1; } } // If timestamp option is not specified, use current system time. long timstamp = getConf().getLong(TIMESTAMP_CONF_KEY, System.currentTimeMillis()); // Set it back to replace invalid timestamp (non-numeric) with current // system time getConf().setLong(TIMESTAMP_CONF_KEY, timstamp); Job job = createSubmittableJob(getConf(), otherArgs); return job.waitForCompletion(true) ? 0 : 1; } public static void main(String[] args) throws Exception { int status = ToolRunner.run(new ImportTsv(), args); System.exit(status); } }