Mam zainstalowanego hadoopa wedug instrukcji: http://hostovita.pl/blog/jak-zainstalowac-hadoop-offline-ubuntu-16-04/ teoretycznie sam hadoop dziala.
Mam problem z uruchomieniem aplikacji (kod w komentarzu).
Blad przy dzialaniu:
hadoop@ubuntu:/usr/local/hadoop$ /usr/local/hadoop/bin/hadoop jar HadoopTest.jar data /data/input /data/output
17/05/16 20:33:55 INFO Configuration.deprecation: session.id is deprecated. Instead, use dfs.metrics.session-id
17/05/16 20:33:55 INFO jvm.JvmMetrics: Initializing JVM Metrics with processName=JobTracker, sessionId=
17/05/16 20:33:55 WARN mapreduce.JobResourceUploader: Hadoop command-line option parsing not performed. Implement the Tool interface and execute your application with ToolRunner to remedy this.
17/05/16 20:33:55 WARN mapreduce.JobResourceUploader: No job jar file set. User classes may not be found. See Job or Job#setJar(String).
17/05/16 20:33:55 INFO input.FileInputFormat: Total input files to process : 2
17/05/16 20:33:55 INFO mapreduce.JobSubmitter: Cleaning up the staging area file:/tmp/hadoop/mapred/staging/hadoop289170000/.staging/job_local289170000_0001
Exception in thread "main" java.lang.NullPointerException
at org.apache.hadoop.mapreduce.lib.input.FileInputFormat.getBlockIndex(FileInputFormat.java:450)
at org.apache.hadoop.mapreduce.lib.input.FileInputFormat.getSplits(FileInputFormat.java:419)
at org.apache.hadoop.mapreduce.JobSubmitter.writeNewSplits(JobSubmitter.java:303)
at org.apache.hadoop.mapreduce.JobSubmitter.writeSplits(JobSubmitter.java:320)
at org.apache.hadoop.mapreduce.JobSubmitter.submitJobInternal(JobSubmitter.java:198)
at org.apache.hadoop.mapreduce.Job$11.run(Job.java:1341)
at org.apache.hadoop.mapreduce.Job$11.run(Job.java:1338)
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:1807)
at org.apache.hadoop.mapreduce.Job.submit(Job.java:1338)
at org.apache.hadoop.mapreduce.Job.waitForCompletion(Job.java:1359)
at org.myorg.WordCount.main(WordCount.java:61)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)