Checking the Commissioning Result

Scenario

You must have permission to access WebUI. If not, contact the admin to obtain an account and password.

Procedure

• Check the running result by obtaining the MapReduce log.

  As shown below, the console outputs the application running result.

  3614 [main] INFO  org.apache.hadoop.hdfs.PeerCache  - SocketCache disabled.
  10159 [main] INFO  org.apache.hadoop.mapreduce.lib.input.FileInputFormat  - Total input files to process : 2
  11378 [main] INFO  org.apache.hadoop.mapreduce.JobSubmitter  - number of splits:2
  12707 [main] INFO  org.apache.hadoop.mapreduce.JobSubmitter  - Submitting tokens for job: job_1468241424339_0002
  16434 [main] INFO  org.apache.hadoop.yarn.client.api.impl.YarnClientImpl  - Submitted application application_1468241424339_0002
  16656 [main] INFO  org.apache.hadoop.mapreduce.Job  - The url to track the job: http://10-120-180-170:8088/proxy/application_1468241424339_0002/
  16657 [main] INFO  org.apache.hadoop.mapreduce.Job  - Running job: job_1468241424339_0002
  31177 [main] INFO  org.apache.hadoop.mapreduce.Job  - Job job_1468241424339_0002 running in uber mode : false
  31200 [main] INFO  org.apache.hadoop.mapreduce.Job  -  map 0% reduce 0%
  45893 [main] INFO  org.apache.hadoop.mapreduce.Job  -  map 100% reduce 0%
  57172 [main] INFO  org.apache.hadoop.mapreduce.Job  -  map 100% reduce 100%
  58554 [main] INFO  org.apache.hadoop.mapreduce.Job  - Job job_1468241424339_0002 completed successfully
  58908 [main] INFO  org.apache.hadoop.mapreduce.Job  - Counters: 49
  File System Counters
  FILE: Number of bytes read=75
  FILE: Number of bytes written=436979
  FILE: Number of read operations=0
  FILE: Number of large read operations=0
  FILE: Number of write operations=0
  HDFS: Number of bytes read=674
  HDFS: Number of bytes written=23
  HDFS: Number of read operations=9
  HDFS: Number of large read operations=0
  HDFS: Number of write operations=2
  Job Counters 
  Launched map tasks=2
  Launched reduce tasks=1
  Data-local map tasks=2
  Total time spent by all maps in occupied slots (ms)=206088
  Total time spent by all reduces in occupied slots (ms)=73824
  Total time spent by all map tasks (ms)=25761
  Total time spent by all reduce tasks (ms)=9228
  Total vcore-seconds taken by all map tasks=25761
  Total vcore-seconds taken by all reduce tasks=9228
  Total megabyte-seconds taken by all map tasks=105517056
  Total megabyte-seconds taken by all reduce tasks=37797888
  Map-Reduce Framework
  Map input records=26
  Map output records=16
  Map output bytes=186
  Map output materialized bytes=114
  Input split bytes=230
  Combine input records=16
  Combine output records=6
  Reduce input groups=3
  Reduce shuffle bytes=114
  Reduce input records=6
  Reduce output records=2
  Spilled Records=12
  Shuffled Maps =2
  Failed Shuffles=0
  Merged Map outputs=2
  GC time elapsed (ms)=356
  CPU time spent (ms)=2860
  Physical memory (bytes) snapshot=1601576960
  Virtual memory (bytes) snapshot=12999819264
  Total committed heap usage (bytes)=2403336192
  Shuffle Errors
  BAD_ID=0
  CONNECTION=0
  IO_ERROR=0
  WRONG_LENGTH=0
  WRONG_MAP=0
  WRONG_REDUCE=0
  File Input Format Counters 
  Bytes Read=444
  File Output Format Counters 
  Bytes Written=23

  

  In the Windows environment, the following exception occurs but does not affect services.

  java.io.IOException: Could not locate executable null\bin\winutils.exe in the Hadoop binaries.

• Check the running result by using MapReduce WebUI.

  LLog in to FusionInsight Manager as a user who has the permission to view task and choose Cluster > Name of the desired cluster > Services > Mapreduce > JobHistoryServer. On the web page that is displayed, view the task execution status.

  Figure 1 JobHistory Web UI
  
• Check the running result by using YARN WebUI.
  Log in to FusionInsight Manager as a user who has the permission to view task and choose Cluster > Name of the desired cluster > Services > Yarn > ResourceManager(Active). On the web page that is displayed, view the task execution status.

  Figure 2 ResourceManager Web UI
  
• View MapReduce logs to learn application running conditions.

  MapReduce logs offers immediate visibility into application running conditions. You can adjust application programs based on the logs.