执行wordcount程序出错

执行hadoop jar share/hadoop/mapreduce/hadoop-mapreduce-examples-3.1.3.jar wordcount /wcinput /wcoutput 命令时出现以下报错怎么解决啊

[ljx@Hadoop102 hadoop-3.1.3]$ hadoop jar share/hadoop/mapreduce/hadoop-mapreduce-examples-3.1.3.jar wordcount /wcinput /wcoutput
2022-09-12 11:12:16,245 INFO impl.MetricsConfig: loaded properties from hadoop-metrics2.properties
2022-09-12 11:12:16,305 INFO impl.MetricsSystemImpl: Scheduled Metric snapshot period at 10 second(s).
2022-09-12 11:12:16,305 INFO impl.MetricsSystemImpl: JobTracker metrics system started
2022-09-12 11:12:16,747 INFO mapreduce.JobSubmitter: Cleaning up the staging area file:/tmp/hadoop/mapred/staging/ljx1742679591/.staging/job_local1742679591_0001
org.apache.hadoop.mapreduce.lib.input.InvalidInputException: Input path does not exist: hdfs://hadoop102:8020/wcinput
at org.apache.hadoop.mapreduce.lib.input.FileInputFormat.singleThreadedListStatus(FileInputFormat.java:332)
at org.apache.hadoop.mapreduce.lib.input.FileInputFormat.listStatus(FileInputFormat.java:274)
at org.apache.hadoop.mapreduce.lib.input.FileInputFormat.getSplits(FileInputFormat.java:396)
at org.apache.hadoop.mapreduce.JobSubmitter.writeNewSplits(JobSubmitter.java:310)
at org.apache.hadoop.mapreduce.JobSubmitter.writeSplits(JobSubmitter.java:327)
at org.apache.hadoop.mapreduce.JobSubmitter.submitJobInternal(JobSubmitter.java:200)
at org.apache.hadoop.mapreduce.Job$11.run(Job.java:1570)
at org.apache.hadoop.mapreduce.Job$11.run(Job.java:1567)
at java.security.AccessController.doPrivileged(Native Method)
at javax.security.auth.Subject.doAs(Subject.java:422)
at org.apache.hadoop.security.UserGroupInformation.doAs(UserGroupInformation.java:1729)
at org.apache.hadoop.mapreduce.Job.submit(Job.java:1567)
at org.apache.hadoop.mapreduce.Job.waitForCompletion(Job.java:1588)
at org.apache.hadoop.examples.WordCount.main(WordCount.java:87)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at java.lang.reflect.Method.invoke(Method.java:498)
at org.apache.hadoop.util.ProgramDriver$ProgramDescription.invoke(ProgramDriver.java:71)
at org.apache.hadoop.util.ProgramDriver.run(ProgramDriver.java:144)
at org.apache.hadoop.examples.ExampleDriver.main(ExampleDriver.java:74)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at java.lang.reflect.Method.invoke(Method.java:498)
at org.apache.hadoop.util.RunJar.run(RunJar.java:318)
at org.apache.hadoop.util.RunJar.main(RunJar.java:232)

看一下你的输入路径是否存在hdfs://hadoop102:8020/wcinput

org.apache.hadoop.mapreduce.lib.input.InvalidInputException: Input path does not exist: hdfs://hadoop102:8020/wcinput
已经告诉你：存在非法的输入异常，后面原因：你的输入路径hdfs://hadoop102:8020/wcinput不存在，需要提前在hdfs上创建好输入路径，否则报错

输入得不对 ，类似这样得bin/hadoop jar hadoop-examples-1.2.1.jar wordcount hdfsInput hdfsOutput

/moudle/hadoop-3.3.0/bin/yarn jar /moudle/hadoop-3.3.0/share/hadoop/mapreduce/hadoop-mapreduce-examples-3.3.0.jar 
wordcount /hdfs /hadoop/output

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如上所示：
hdfs的目录上这个路径下 /wcinput 需要有你需要统计的文本，同时hdfs上的输出目录要存在，可以先创建输入输出目录，把统计文本上传到输入目录下

更多内容参考我的博客吧：
详细记录了各个大数据组件部署的详细步骤，以及相关问题解决方法：

https://blog.csdn.net/zhengzaifeidelushang/article/details/111353446

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