Incorrect values being displayed for blacklisted_maps and blacklisted_reduces
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Key: MAPREDUCE-1381
URL: https://issues.apache.org/jira/browse/MAPREDUCE-1381
Project: Hadoop Map/Reduce
Issue Type: Bug
Components: jobtracker
Affects Versions: 0.20.1
Reporter: Ramya R
Priority: Minor
Fix For: 0.20.2
blacklisted_maps and blacklisted_reduces metrics collected displays wrong
values. For example when trackers_blacklisted=6 and with each TT having 6 map
slots and 2 reduce slots, blacklisted_maps should be 36 and blacklisted_reduces
should be 12. However I observed values which were not expected. Below is a
snapshot of the metrics obtained:
mapred.jobtracker: hostName=<hostname>, sessionId=, *blacklisted_maps=24*,
*blacklisted_reduces=8*, jobs_completed=136, jobs_failed=26, jobs_killed=0,
jobs_preparing=0, jobs_running=13, jobs_submitted=165, map_slots=2748,
maps_completed=76501, maps_failed=8741, maps_killed=0, maps_launched=88199,
occupied_map_slots=1902, occupied_reduce_slots=902, reduce_slots=916,
reduces_completed=21927, reduces_failed=184, reduces_killed=0,
reduces_launched=23027, reserved_map_slots=0, reserved_reduce_slots=0,
running_maps=1902, running_reduces=902, trackers=464, *trackers_blacklisted=6*,
trackers_decommissioned=1, waiting_maps=-1741, waiting_reduces=2042
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