The Map tasks logs should have the value of input split it processed
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Key: MAPREDUCE-3678
URL: https://issues.apache.org/jira/browse/MAPREDUCE-3678
Project: Hadoop Map/Reduce
Issue Type: New Feature
Components: nodemanager, tasktracker
Affects Versions: 1.0.0, 0.20.205.0, 0.20.203.0
Environment: Linux red hat.
Reporter: Bejoy KS
It would be easier to debug some corner in tasks if we knew what was the input
split processed by that task. Map reduce task tracker log should accommodate
the same. Also in the jobdetails web UI, the split also should be displayed
along with the Split Locations.
Sample as
Input Split
hdfs://myserver:9000/userdata/sampleapp/inputdir/file1.csv - <split no>/<offset
from beginning of file>
This would be much beneficial to nail down some data quality issues in large
data volume processing.
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