[31260] | 1 | package org.hathitrust.extractedfeatures;
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| 2 |
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| 3 | import java.io.BufferedInputStream;
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| 4 | import java.io.FileInputStream;
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| 5 | import java.io.FileNotFoundException;
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| 6 | import java.io.IOException;
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| 7 | import java.io.Serializable;
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| 8 | import org.apache.commons.cli.*;
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| 9 |
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| 10 | import org.apache.spark.api.java.*;
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| 11 | import org.apache.spark.api.java.function.Function2;
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| 12 | import org.apache.spark.api.java.function.PairFunction;
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| 13 | import org.apache.spark.util.DoubleAccumulator;
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| 14 | import scala.Tuple2;
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| 15 |
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| 16 | import org.apache.spark.SparkConf;
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| 17 |
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| 18 | public class ProcessForLangCount implements Serializable
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| 19 | {
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| 20 | private static final long serialVersionUID = 1L;
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| 21 |
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| 22 | // Following details on number of partitions to use given in
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| 23 | // "Parallelized collections" section of:
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| 24 | // https://spark.apache.org/docs/2.0.1/programming-guide.html
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| 25 | //
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| 26 | // For a more detailed discussion see:
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| 27 | // http://blog.cloudera.com/blog/2015/03/how-to-tune-your-apache-spark-jobs-part-2/
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| 28 |
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| 29 | protected static final int DEFAULT_NUM_CORES = 6;
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| 30 | protected static final int DEFAULT_NUM_PARTITIONS = 3*DEFAULT_NUM_CORES;
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| 31 |
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| 32 | protected String _input_dir;
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| 33 | protected String _json_list_filename;
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| 34 |
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| 35 | protected int _verbosity;
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| 36 |
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| 37 | public ProcessForLangCount(String input_dir, String json_list_filename, int verbosity)
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| 38 | {
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| 39 | _input_dir = input_dir;
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| 40 | _json_list_filename = (json_list_filename != null) ? json_list_filename : input_dir;
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| 41 |
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| 42 | _verbosity = verbosity;
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| 43 | }
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| 44 |
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| 45 | protected String generateSparkAppName(String exec_mode)
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| 46 | {
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| 47 | String spark_app_name = "[" + exec_mode + "] Extracted Features: Process for Language Labels";
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| 48 | spark_app_name += " [" + _json_list_filename + "]";
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| 49 |
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| 50 | return spark_app_name;
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| 51 | }
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| 52 |
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[31261] | 53 | public void execLangCount()
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[31260] | 54 | {
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| 55 | String spark_app_name = generateSparkAppName("Per Page");
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| 56 |
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| 57 | SparkConf conf = new SparkConf().setAppName(spark_app_name);
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| 58 | JavaSparkContext jsc = new JavaSparkContext(conf);
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| 59 |
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| 60 | String filename_root = _json_list_filename.replaceAll(".*/","").replaceAll("\\..*$","");
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| 61 | String output_directory = "lang-" + filename_root + "-out";
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| 62 | if (ClusterFileIO.exists(output_directory))
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| 63 | {
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| 64 | System.err.println("Error: " + output_directory + " already exists. Spark unable to write output data");
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| 65 | jsc.close();
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| 66 | System.exit(1);
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| 67 | }
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| 68 |
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| 69 | int num_partitions = Integer.getInteger("wcsa-ef-ingest.num-partitions", DEFAULT_NUM_PARTITIONS);
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| 70 | JavaRDD<String> json_list_data = jsc.textFile(_json_list_filename,num_partitions).cache();
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| 71 | json_list_data.setName("JSON-file-list");
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| 72 |
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| 73 | long num_volumes = json_list_data.count();
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| 74 | double per_vol = 100.0/(double)num_volumes;
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| 75 |
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| 76 | DoubleAccumulator per_vol_progress_accum = jsc.sc().doubleAccumulator("Per Volume Progress Percent");
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| 77 |
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| 78 | boolean strict_file_io = Boolean.getBoolean("wcsa-ef-ingest.strict-file-io");
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| 79 |
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| 80 | PerVolumeLangStreamFlatmap paged_solr_langfreq_flatmap
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| 81 | = new PerVolumeLangStreamFlatmap(_input_dir,_verbosity,
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| 82 | per_vol_progress_accum,per_vol,
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| 83 | strict_file_io);
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| 84 | JavaRDD<String> lang_list = json_list_data.flatMap(paged_solr_langfreq_flatmap);
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| 85 | lang_list.setName("lang-stream");
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| 86 |
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| 87 |
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[31264] | 88 | JavaPairRDD<String, Long> lang_pairs = lang_list.mapToPair(s -> new Tuple2<String, Long>(s, 1L));
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[31260] | 89 | lang_pairs.setName("single-lang-count");
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| 90 |
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[31264] | 91 | JavaPairRDD<String, Long> lang_counts = lang_pairs.reduceByKey((a, b) -> a + b);
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[31260] | 92 | lang_counts.setName("lang-frequency");
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| 93 |
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[31264] | 94 | JavaPairRDD<Long, String> lang_counts_swapped_pair
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[31260] | 95 | = lang_counts.mapToPair(item -> item.swap());
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| 96 | lang_counts_swapped_pair.setName("frequency-lang-swap");
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| 97 |
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[31264] | 98 | JavaPairRDD<Long, String> lang_counts_swapped_pair_sorted
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[31260] | 99 | = lang_counts_swapped_pair.sortByKey(false, num_partitions);
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[31261] | 100 | lang_counts_swapped_pair_sorted.setName("descending-sorted-frequency-lang");
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[31260] | 101 |
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[31264] | 102 | JavaPairRDD<String, Long> lang_count_sorted
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[31260] | 103 | = lang_counts_swapped_pair_sorted.mapToPair(item -> item.swap());
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| 104 | lang_count_sorted.setName("descending-lang-frequency");
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| 105 |
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| 106 |
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| 107 | lang_count_sorted.saveAsTextFile(output_directory);
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| 108 | jsc.close();
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| 109 | }
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| 110 |
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| 111 |
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| 112 | public static void print_usage(HelpFormatter formatter, Options options)
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| 113 | {
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| 114 | formatter.printHelp("RUN.bash [options] input-dir json-filelist.txt", options);
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| 115 | }
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| 116 |
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| 117 | public static void main(String[] args) {
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| 118 | Options options = new Options();
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| 119 |
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| 120 | Option verbosity_opt = new Option("v", "verbosity", true,
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| 121 | "Set to control the level of debugging output [0=none, 1=some, 2=lots]");
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| 122 | verbosity_opt.setRequired(false);
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| 123 | options.addOption(verbosity_opt);
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| 124 |
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| 125 | Option properties_opt = new Option("p", "properties", true,
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| 126 | "Read in the specified Java properties file");
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| 127 | properties_opt.setRequired(false);
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| 128 | options.addOption(properties_opt);
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| 129 |
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| 130 | // Need to work with CLI v1.2 as this is the JAR that is bundled with Hadoop/Spark
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| 131 | CommandLineParser parser = new GnuParser();
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| 132 | //CommandLineParser parser = new DefaultParser(); // if working with CLI v1.3 and above
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| 133 |
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| 134 | HelpFormatter formatter = new HelpFormatter();
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| 135 | CommandLine cmd = null;
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| 136 |
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| 137 | try {
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| 138 | cmd = parser.parse(options, args);
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| 139 | }
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| 140 | catch (ParseException e) {
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| 141 | System.err.println(e.getMessage());
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| 142 | print_usage(formatter,options);
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| 143 | System.exit(1);
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| 144 | }
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| 145 |
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| 146 | String verbosity_str = cmd.getOptionValue("verbosity","1");
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| 147 | int verbosity = Integer.parseInt(verbosity_str);
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| 148 |
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| 149 | String property_filename = cmd.getOptionValue("properties",null);
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| 150 |
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| 151 | String[] filtered_args = cmd.getArgs();
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| 152 |
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| 153 | if (filtered_args.length != 2) {
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| 154 | print_usage(formatter,options);
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| 155 | System.exit(1);
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| 156 | }
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| 157 |
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| 158 | if (property_filename != null) {
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| 159 | try {
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| 160 | FileInputStream fis = new FileInputStream(property_filename);
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| 161 | BufferedInputStream bis = new BufferedInputStream(fis);
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| 162 |
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| 163 | System.getProperties().load(bis);
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| 164 | }
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| 165 | catch (FileNotFoundException e) {
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| 166 | e.printStackTrace();
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| 167 | System.err.println("File not found: '" + property_filename + "'. Skipping property file read");
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| 168 | }
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| 169 | catch (IOException e) {
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| 170 | System.err.println("IO Exception for: '" + property_filename + "'. Malformed syntax? Skipping property file read");
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| 171 | }
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| 172 | }
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| 173 |
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| 174 | String input_dir = filtered_args[0];
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| 175 | String json_list_filename = filtered_args[1];
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| 176 |
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[31261] | 177 | ProcessForLangCount prep_for_lang
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| 178 | = new ProcessForLangCount(input_dir,json_list_filename,verbosity);
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[31260] | 179 |
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[31261] | 180 | prep_for_lang.execLangCount();
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[31260] | 181 |
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| 182 | }
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| 183 | }
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