Jian He created MAPREDUCE-5568:
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Summary: JHS return invalid string for reducer completion
percentage if AM restarts with 0 reducer.
Key: MAPREDUCE-5568
URL: https://issues.apache.org/jira/browse/MAPREDUCE-5568
Project: Hadoop Map/Reduce
Issue Type: Bug
Reporter: Jian He
JobCLient shows like:
{code}
13/10/05 16:26:09 INFO mapreduce.Job: map 100% reduce NaN%
13/10/05 16:26:09 INFO mapreduce.Job: Job job_1381015536254_0001 completed
successfully
13/10/05 16:26:09 INFO mapreduce.Job: Counters: 26
File System Counters
FILE: Number of bytes read=0
FILE: Number of bytes written=76741
FILE: Number of read operations=0
FILE: Number of large read operations=0
FILE: Number of write operations=0
HDFS: Number of bytes read=48
HDFS: Number of bytes written=0
HDFS: Number of read operations=1
HDFS: Number of large read operations=0
HDFS: Number of write operations=0
{code}
With mapped job -status command, it shows:
{code}
Uber job : false
Number of maps: 1
Number of reduces: 0
map() completion: 1.0
reduce() completion: NaN
Job state: SUCCEEDED
retired: false
reason for failure:
{code}
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