Question

嗨，如果我想编码“直到输入文件的末尾没有”来找出编写程序的代码我认为这是由于错误造成的。非常感谢

            15/07/01 13:05:11 INFO mapreduce.Job: Task Id : attempt_1435769899158_0001_m_000000_1, Status : FAILED
Error: java.lang.ArrayIndexOutOfBoundsException: 1
            15/07/01 13:05:28 INFO mapreduce.Job: Job job_1435769899158_0001 failed with state FAILED due to: Task failed task_1435769899158_0001_m_000000
Job failed as tasks failed. failedMaps:1 failedReduces:0


code:

    import java.io.IOException;
    import java.util.*;

    import org.apache.hadoop.fs.Path;
    import org.apache.hadoop.conf.*;
    import org.apache.hadoop.io.*;
    import org.apache.hadoop.mapreduce.*;
    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.mapreduce.lib.output.TextOutputFormat;

    public class MatrixSum {

    public static class Map extends Mapper<LongWritable, Text, Text, Text> {
        public void map(LongWritable key, Text value, Context context) throws IOException, InterruptedException {
            Configuration conf = context.getConfiguration();
            String line = value.toString();
            String[] indicesAndValue = line.split(",");
            Text outputKey = new Text();
            Text outputValue = new Text();

//只要输入文件不是结尾??????

            if (indicesAndValue[0].equals("A")) {
                    outputKey.set(indicesAndValue[1] + "," + indicesAndValue[2]);
                    outputValue.set("A," + indicesAndValue[2] + "," + indicesAndValue[3]);
                    context.write(outputKey, outputValue);

            } else {
                    outputKey.set(indicesAndValue[1] + "," + indicesAndValue[2]);
                    outputValue.set("B," + indicesAndValue[2] + "," + indicesAndValue[3]);
                    context.write(outputKey, outputValue);
                }
            }
        }
    }

Answer 1

**问题解决了：在IF IF放开之前，直到输入文件的结尾和空行才能读取。它读起来像一个空行显示错误信息。 **

// add this code somewhere to your constructor of your page or content dialog - where the problematic TextBox is located
Windows.UI.ViewManagement.InputPane.GetForCurrentView().Showing += (s, args) =>
{
    const double extraHeightBuffer = 20.0;

    UIElement focused = FocusManager.GetFocusedElement() as UIElement;
    if (null != focused)
    {
        GeneralTransform gt = focused.TransformToVisual(this);
        Point focusedPoint = gt.TransformPoint(new Point(0, focused.RenderSize.Height - 1));
        double bottomOfFocused = focusedPoint.Y + extraHeightBuffer;
        if (bottomOfFocused > args.OccludedRect.Top)
        {
            var trans = new TranslateTransform();
            trans.Y = -(bottomOfFocused - args.OccludedRect.Top);
            this.RenderTransform = trans;
        }
        args.EnsuredFocusedElementInView = true;
    }
};

Windows.UI.ViewManagement.InputPane.GetForCurrentView().Hiding += (s, args) =>
{
    var trans = new TranslateTransform();
    trans.Y = 0;
    this.RenderTransform = trans;
    args.EnsuredFocusedElementInView = false;
};

直到输入文件的结束代码不是

1 个答案: