Examples of com.google.common.base.Stopwatch.elapsedTime()

com.google.common.base.Stopwatch.elapsedTime()
Returns the current elapsed time shown on this stopwatch, expressed in the desired time unit, with any fraction rounded down.
Note that the overhead of measurement can be more than a microsecond, so it is generally not useful to specify {@link TimeUnit#NANOSECONDS}precision here.

          LOG.info("Table '{}' exists now. Assuming that another process concurrently created it.", tableName);
          return;
        } else {
          TimeUnit.NANOSECONDS.sleep(sleepTime);
        }
      } while (stopwatch.elapsedTime(timeoutUnit) < timeout);
    } catch (InterruptedException e) {
      LOG.warn("Sleeping thread interrupted.");
    }
    LOG.error("Table '{}' does not exist after waiting {} ms. Giving up.", tableName, MAX_CREATE_TABLE_WAIT);
  }

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      }
      totalBytes += read;
    }
    streamTimer.stop();


    double throughput = (double)totalBytes / streamTimer.elapsedTime(TimeUnit.SECONDS);


    System.out.println("HDFS streaming: ");
    System.out.println("total time to open: " + fileOpenTimer.elapsedMillis() + " ms");
    System.out.println("total time to read: " + streamTimer.elapsedMillis() + " ms");
    System.out.println("total bytes: " + totalBytes + " bytes ("

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    scanner.close();
    table.close();


    ScanMetrics metrics = ProtobufUtil.toScanMetrics(scan.getAttribute(Scan.SCAN_ATTRIBUTES_METRICS_DATA));
    long totalBytes = metrics.countOfBytesInResults.get();
    double throughput = (double)totalBytes / scanTimer.elapsedTime(TimeUnit.SECONDS);
    double throughputRows = (double)numRows / scanTimer.elapsedTime(TimeUnit.SECONDS);
    double throughputCells = (double)numCells / scanTimer.elapsedTime(TimeUnit.SECONDS);


    System.out.println("HBase scan: ");
    System.out.println("total time to open table: " + tableOpenTimer.elapsedMillis() + " ms");

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    table.close();


    ScanMetrics metrics = ProtobufUtil.toScanMetrics(scan.getAttribute(Scan.SCAN_ATTRIBUTES_METRICS_DATA));
    long totalBytes = metrics.countOfBytesInResults.get();
    double throughput = (double)totalBytes / scanTimer.elapsedTime(TimeUnit.SECONDS);
    double throughputRows = (double)numRows / scanTimer.elapsedTime(TimeUnit.SECONDS);
    double throughputCells = (double)numCells / scanTimer.elapsedTime(TimeUnit.SECONDS);


    System.out.println("HBase scan: ");
    System.out.println("total time to open table: " + tableOpenTimer.elapsedMillis() + " ms");
    System.out.println("total time to open scanner: " + scanOpenTimer.elapsedMillis() + " ms");

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    ScanMetrics metrics = ProtobufUtil.toScanMetrics(scan.getAttribute(Scan.SCAN_ATTRIBUTES_METRICS_DATA));
    long totalBytes = metrics.countOfBytesInResults.get();
    double throughput = (double)totalBytes / scanTimer.elapsedTime(TimeUnit.SECONDS);
    double throughputRows = (double)numRows / scanTimer.elapsedTime(TimeUnit.SECONDS);
    double throughputCells = (double)numCells / scanTimer.elapsedTime(TimeUnit.SECONDS);


    System.out.println("HBase scan: ");
    System.out.println("total time to open table: " + tableOpenTimer.elapsedMillis() + " ms");
    System.out.println("total time to open scanner: " + scanOpenTimer.elapsedMillis() + " ms");
    System.out.println("total time to scan: " + scanTimer.elapsedMillis() + " ms");

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    scanTimer.stop();
    scanner.close();


    ScanMetrics metrics = scanner.getScanMetrics();
    long totalBytes = metrics.countOfBytesInResults.get();
    double throughput = (double)totalBytes / scanTimer.elapsedTime(TimeUnit.SECONDS);
    double throughputRows = (double)numRows / scanTimer.elapsedTime(TimeUnit.SECONDS);
    double throughputCells = (double)numCells / scanTimer.elapsedTime(TimeUnit.SECONDS);


    System.out.println("HBase scan snapshot: ");
    System.out.println("total time to restore snapshot: " + snapshotRestoreTimer.elapsedMillis() + " ms");

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    scanner.close();


    ScanMetrics metrics = scanner.getScanMetrics();
    long totalBytes = metrics.countOfBytesInResults.get();
    double throughput = (double)totalBytes / scanTimer.elapsedTime(TimeUnit.SECONDS);
    double throughputRows = (double)numRows / scanTimer.elapsedTime(TimeUnit.SECONDS);
    double throughputCells = (double)numCells / scanTimer.elapsedTime(TimeUnit.SECONDS);


    System.out.println("HBase scan snapshot: ");
    System.out.println("total time to restore snapshot: " + snapshotRestoreTimer.elapsedMillis() + " ms");
    System.out.println("total time to open scanner: " + scanOpenTimer.elapsedMillis() + " ms");

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    ScanMetrics metrics = scanner.getScanMetrics();
    long totalBytes = metrics.countOfBytesInResults.get();
    double throughput = (double)totalBytes / scanTimer.elapsedTime(TimeUnit.SECONDS);
    double throughputRows = (double)numRows / scanTimer.elapsedTime(TimeUnit.SECONDS);
    double throughputCells = (double)numCells / scanTimer.elapsedTime(TimeUnit.SECONDS);


    System.out.println("HBase scan snapshot: ");
    System.out.println("total time to restore snapshot: " + snapshotRestoreTimer.elapsedMillis() + " ms");
    System.out.println("total time to open scanner: " + scanOpenTimer.elapsedMillis() + " ms");
    System.out.println("total time to scan: " + scanTimer.elapsedMillis() + " ms");

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    Counters counters = job.getCounters();
    long numRows = counters.findCounter(ScanCounter.NUM_ROWS).getValue();
    long numCells = counters.findCounter(ScanCounter.NUM_CELLS).getValue();


    long totalBytes = counters.findCounter(HBASE_COUNTER_GROUP_NAME, "BYTES_IN_RESULTS").getValue();
    double throughput = (double)totalBytes / scanTimer.elapsedTime(TimeUnit.SECONDS);
    double throughputRows = (double)numRows / scanTimer.elapsedTime(TimeUnit.SECONDS);
    double throughputCells = (double)numCells / scanTimer.elapsedTime(TimeUnit.SECONDS);


    System.out.println("HBase scan mapreduce: ");
    System.out.println("total time to open scanner: " + scanOpenTimer.elapsedMillis() + " ms");

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    long numRows = counters.findCounter(ScanCounter.NUM_ROWS).getValue();
    long numCells = counters.findCounter(ScanCounter.NUM_CELLS).getValue();


    long totalBytes = counters.findCounter(HBASE_COUNTER_GROUP_NAME, "BYTES_IN_RESULTS").getValue();
    double throughput = (double)totalBytes / scanTimer.elapsedTime(TimeUnit.SECONDS);
    double throughputRows = (double)numRows / scanTimer.elapsedTime(TimeUnit.SECONDS);
    double throughputCells = (double)numCells / scanTimer.elapsedTime(TimeUnit.SECONDS);


    System.out.println("HBase scan mapreduce: ");
    System.out.println("total time to open scanner: " + scanOpenTimer.elapsedMillis() + " ms");
    System.out.println("total time to scan: " + scanTimer.elapsedMillis() + " ms");

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