I'm trying to run very simple task with mapreduce.   mapper.py:   #!/usr/bin/env python import sys for line in sys.stdin: print line my txt file:     qwerty asdfgh zxc     Command line to run the job:   hadoop jar /usr/lib/hadoop-0.20-mapreduce/contrib/streaming/hadoop-streaming-2.6.0-mr1-cdh5.8.0.jar \ -input /user/cloudera/In/test.txt \ -output /user/cloudera/test \ -mapper /home/cloudera/Documents/map.py \ -file /home/cloudera/Documents/map.py     Error:   INFO mapreduce.Job: Task Id : attempt_1490617885665_0008_m_000001_0, Status : FAILED Error: java.lang.RuntimeException: PipeMapRed.waitOutputThreads(): subprocess failed with code 127 at org.apache.hadoop.streaming.PipeMapRed.waitOutputThreads(PipeMapRed.java:325) at org.apache.hadoop.streaming.PipeMapRed.mapRedFinished(PipeMapRed.java:538) at org.apache.hadoop.streaming.PipeMapper.close(PipeMapper.java:130) at org.apache.hadoop.mapred.MapRunner.run(MapRunner.java:61) at org.apache.hadoop.streaming.PipeMapRunner.run(PipeMapRunner.java:34) at org.apache.hadoop.mapred.MapTask.runOldMapper(MapTask.java:453) at org.apache.hadoop.mapred.MapTask.run(MapTask.java:343) at org.apache.hadoop.mapred.YarnChild$2.run(YarnChild.java:164) at java.security.AccessController.doPrivileged(Native Method) at javax.security.auth.Subject.doAs(Subject.java:415) at org.apache.hadoop.security.UserGroupInformation.doAs(UserGroupInformation.java:1693) at org.apache.hadoop.mapred.YarnChild.main(YarnChild.java:158)     How to fix this and run the code? When I use  cat /home/cloudera/Documents/test.txt | python /home/cloudera/Documents/map.py it works fine     ... View more

Hello everybody   I got some problem with Hive. I downloaded the Cloudera QuickStart VM and have been using it for some time. Now I get a message at "checking current configuration" step in Hue:   Hive The application won't work without a running HiveServer2.    In command line I get:  >service hive-server2 status   Hive Server2 is running [ OK ]   But when I try to use Hive I get an error: Could not connect to quickstart.cloudera:10000 (code THRIFTTRANSPORT): TTransportException('Could not connect to quickstart.cloudera:10000',)   How to fix this?   sudo netstat -tulp | grep :10000 gives me nothing. Also I restarted both hive-server2 and my virtual machine, but it didn't help.   ... View more