hadoop jar hadoop-mapreduce-examples-2.6.0-cdh5.15.1.jar pi 2 3 报错

来源：1-1 课程导学

weixin_慕慕5408511

2021-10-04

java.io.FileNotFoundException: File does not exist: hdfs://hadoop:8020/user/root/QuasiMonteCarlo_1728033444592_1355480435/out/reduce-out
at org.apache.hadoop.hdfs.DistributedFileSystem$20.doCall(DistributedFileSystem.java:1270)
at org.apache.hadoop.hdfs.DistributedFileSystem $20 . d o C a l l (D i s t r i b u t e d F i l e S y s t e m . j a v a : 1262) a t o r g . a p a c h e . h a d o o p . f s . F i l e S y s t e m L i n k R e s o l v e r . r e s o l v e (F i l e S y s t e m L i n k R e s o l v e r . j a v a : 81) a t o r g . a p a c h e . h a d o o p . h d f s . D i s t r i b u t e d F i l e S y s t e m . g e t F i l e S t a t u s (D i s t r i b u t e d F i l e S y s t e m . j a v a : 1262) a t o r g . a p a c h e . h a d o o p . i o . S e q u e n c e F i l e$ Reader.(SequenceFile.java:1820)
at org.apache.hadoop.io.SequenceFile $R e a d e r . < i n i t > (S e q u e n c e F i l e . j a v a : 1844) a t o r g . a p a c h e . h a d o o p . e x a m p l e s . Q u a s i M o n t e C a r l o . e s t i m a t e P i (Q u a s i M o n t e C a r l o . j a v a : 314) a t o r g . a p a c h e . h a d o o p . e x a m p l e s . Q u a s i M o n t e C a r l o . r u n (Q u a s i M o n t e C a r l o . j a v a : 354) a t o r g . a p a c h e . h a d o o p . u t i l . T o o l R u n n e r . r u n (T o o l R u n n e r . j a v a : 70) a t o r g . a p a c h e . h a d o o p . e x a m p l e s . Q u a s i M o n t e C a r l o . m a i n (Q u a s i M o n t e C a r l o . j a v a : 363) a t s u n . r e f l e c t . N a t i v e M e t h o d A c c e s s o r I m p l . i n v o k e 0 (N a t i v e M e t h o d) a t s u n . r e f l e c t . N a t i v e M e t h o d A c c e s s o r I m p l . i n v o k e (N a t i v e M e t h o d A c c e s s o r I m p l . j a v a : 62) a t s u n . r e f l e c t . D e l e g a t i n g M e t h o d A c c e s s o r I m p l . i n v o k e (D e l e g a t i n g M e t h o d A c c e s s o r I m p l . j a v a : 43) a t j a v a . l a n g . r e f l e c t . M e t h o d . i n v o k e (M e t h o d . j a v a : 498) a t o r g . a p a c h e . h a d o o p . u t i l . P r o g r a m D r i v e r$ 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:226)
at org.apache.hadoop.util.RunJar.main(RunJar.java:141)