Package org.apache.hadoop.mapred.LineRecordReader

Examples of org.apache.hadoop.mapred.LineRecordReader.LineReader

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      this.name = name;
      setDaemon(true);
    }

    public void run() {
      LineReader lineReader = null;
      try {
        Text row = new Text();
        lineReader = new LineReader((InputStream)in, hconf);

        while(true) {
          row.clear();
          long bytes = lineReader.readLine(row);
          if(bytes <= 0) {
            break;
          }
          proc.processLine(row);
        }
        LOG.info("StreamThread "+name+" done");

      } catch (Throwable th) {
        scriptError = th;
        LOG.warn(StringUtils.stringifyException(th));
      } finally {
        try {
          if(lineReader != null) {
            lineReader.close();
          }
          in.close();
          proc.close();
        } catch (Exception e) {
          LOG.warn(name + ": error in closing ..");
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      }

      long lineCounter = 0;
      for (Path indexFinalPath : paths) {
        FSDataInputStream ifile = fs.open(indexFinalPath);
        LineReader lr = new LineReader(ifile, conf);
        try {
          Text line = new Text();
          while (lr.readLine(line) > 0) {
            if (++lineCounter > maxEntriesToLoad) {
              throw new HiveException("Number of compact index entries loaded during the query exceeded the maximum of " + maxEntriesToLoad
                  + " set in " + HiveConf.ConfVars.HIVE_INDEX_COMPACT_QUERY_MAX_ENTRIES.varname);
            }
            add(line);
          }
        }
        finally {
          // this will close the input stream
          lr.close();
        }
      }
    }
  }
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      this.output = output;
      this.reporter = reporter;
    }

    public void run() {
      LineReader lineReader = null;
      try {
        Text key = new Text();
        Text val = new Text();
        Text line = new Text();
        lineReader = new LineReader((InputStream)clientIn_, job_);
        // 3/4 Tool to Hadoop
        while (lineReader.readLine(line) > 0) {
          answer = line.getBytes();
          splitKeyVal(answer, line.getLength(), key, val);
          output.collect(key, val);
          line.clear();
          numRecWritten_++;
          long now = System.currentTimeMillis();
          if (now-lastStdoutReport > reporterOutDelay_) {
            lastStdoutReport = now;
            String hline = "Records R/W=" + numRecRead_ + "/" + numRecWritten_;
            reporter.setStatus(hline);
            logprintln(hline);
            logflush();
          }
        }
        if (lineReader != null) {
          lineReader.close();
        }
        if (clientIn_ != null) {
          clientIn_.close();
          clientIn_ = null;
          LOG.info("MROutputThread done");
        }
      } catch (Throwable th) {
        outerrThreadsThrowable = th;
        LOG.warn(StringUtils.stringifyException(th));
        try {
          if (lineReader != null) {
            lineReader.close();
          }
          if (clientIn_ != null) {
            clientIn_.close();
            clientIn_ = null;
          }
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      this.reporter = reporter;
    }
     
    public void run() {
      Text line = new Text();
      LineReader lineReader = null;
      try {
        lineReader = new LineReader((InputStream)clientErr_, job_);
        while (lineReader.readLine(line) > 0) {
          String lineStr = line.toString();
          if (matchesReporter(lineStr)) {
            if (matchesCounter(lineStr)) {
              incrCounter(lineStr);
            } else if (matchesStatus(lineStr)) {
              setStatus(lineStr);
            } else {
              LOG.warn("Cannot parse reporter line: " + lineStr);
            }
          } else {
            System.err.println(lineStr);
          }
          long now = System.currentTimeMillis();
          if (reporter != null && now-lastStderrReport > reporterErrDelay_) {
            lastStderrReport = now;
            reporter.progress();
          }
          line.clear();
        }
        if (lineReader != null) {
          lineReader.close();
        }
        if (clientErr_ != null) {
          clientErr_.close();
          clientErr_ = null;
          LOG.info("MRErrorThread done");
        }
      } catch (Throwable th) {
        outerrThreadsThrowable = th;
        LOG.warn(StringUtils.stringifyException(th));
        try {
          if (lineReader != null) {
            lineReader.close();
          }
          if (clientErr_ != null) {
            clientErr_.close();
            clientErr_ = null;
          }
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  private LineReader  lineReader;
  private InputStream in;
  private Text        row;

  public void initialize(InputStream in, Configuration conf, Properties tbl) throws IOException {
    lineReader = new LineReader(in, conf);
    this.in = in;
  }
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  private LineReader  lineReader;
  private InputStream in;
  private Text        row;

  public void initialize(InputStream in, Configuration conf) throws IOException {
    lineReader = new LineReader(in, conf);
    this.in = in;
  }
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      this.name = name;
      setDaemon(true);
    }

    public void run() {
      LineReader lineReader = null;
      try {
        Text row = new Text();
        lineReader = new LineReader((InputStream)in, hconf);

        while(true) {
          row.clear();
          long bytes = lineReader.readLine(row);
          if(bytes <= 0) {
            break;
          }
          proc.processLine(row);
        }
        LOG.info("StreamThread "+name+" done");

      } catch (Throwable th) {
        scriptError = th;
        LOG.warn(StringUtils.stringifyException(th));
      } finally {
        try {
          if(lineReader != null) {
            lineReader.close();
          }
          in.close();
          proc.close();
        } catch (Exception e) {
          LOG.warn(name + ": error in closing ..");
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                                             (str.getBytes("UTF-8")),
                                           defaultConf);
  }
 
  public void testUTF8() throws Exception {
    LineReader in = makeStream("abcd\u20acbdcd\u20ac");
    Text line = new Text();
    in.readLine(line);
    assertEquals("readLine changed utf8 characters",
                 "abcd\u20acbdcd\u20ac", line.toString());
    in = makeStream("abc\u200axyz");
    in.readLine(line);
    assertEquals("split on fake newline", "abc\u200axyz", line.toString());
  }
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    in.readLine(line);
    assertEquals("split on fake newline", "abc\u200axyz", line.toString());
  }

  public void testNewLines() throws Exception {
    LineReader in = makeStream("a\nbb\n\nccc\rdddd\r\neeeee");
    Text out = new Text();
    in.readLine(out);
    assertEquals("line1 length", 1, out.getLength());
    in.readLine(out);
    assertEquals("line2 length", 2, out.getLength());
    in.readLine(out);
    assertEquals("line3 length", 0, out.getLength());
    in.readLine(out);
    assertEquals("line4 length", 3, out.getLength());
    in.readLine(out);
    assertEquals("line5 length", 4, out.getLength());
    in.readLine(out);
    assertEquals("line5 length", 5, out.getLength());
    assertEquals("end of file", 0, in.readLine(out));
  }
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   * @throws Exception
   */
  public static void main(String[] args) throws Exception {
    for(String arg: args) {
      System.out.println("Working on " + arg);
      LineReader reader = makeStream(unquote(arg));
      Text line = new Text();
      int size = reader.readLine(line);
      while (size > 0) {
        System.out.println("Got: " + line.toString());
        size = reader.readLine(line);
      }
      reader.close();
    }
  }
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Related Classes of org.apache.hadoop.mapred.LineRecordReader.LineReader

  • org.apache.hadoop.hive.ql.exec.ScriptOperator$StreamThread
  • org.apache.hadoop.hive.ql.exec.TextRecordReader
  • org.apache.hadoop.hive.ql.index.compact.HiveCompactIndexResult
  • org.apache.hadoop.hive.ql.index.HiveIndexResult
  • org.apache.hadoop.mapred.lib.NLineInputFormat
  • org.apache.hadoop.mapred.TestKeyValueTextInputFormat
  • org.apache.hadoop.mapred.TestTextInputFormat
  • org.apache.hadoop.streaming.PipeMapRed$MRErrorThread
  • org.apache.hadoop.streaming.PipeMapRed$MROutputThread
  • org.apache.hadoop.streaming.TestStreamedMerge$SideEffectConsumer
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