duplicate "Map Completion Events" in tasktracker fetch status
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Key: HADOOP-3682
URL: https://issues.apache.org/jira/browse/HADOOP-3682
Project: Hadoop Core
Issue Type: Bug
Components: mapred
Affects Versions: 0.15.3
Reporter: Zheng Shao
Assignee: Zheng Shao
we saw duplicate "MapCompletionEvents" in FetchStatus from TaskTracker. This
prevents the ReduceTask from getting all the map locations, and the ReduceTask
is waiting forever.
This is a printout of the MapCompletionEvents from a FetchStatus from the
TaskTracker:
988 0 task_200806270248_6185_m_000980_0 980 Map
SUCCEEDED
989 0 task_200806270248_6185_m_000787_0 787 Map
SUCCEEDED
990 0 task_200806270248_6185_m_000749_0 749 Map
SUCCEEDED
991 0 task_200806270248_6185_m_000848_0 848 Map
SUCCEEDED
992 0 task_200806270248_6185_m_000919_0 919 Map
SUCCEEDED
993 0 task_200806270248_6185_m_000836_0 836 Map
SUCCEEDED
994 0 task_200806270248_6185_m_000838_0 838 Map
SUCCEEDED
995 0 task_200806270248_6185_m_000936_0 936 Map
SUCCEEDED
996 0 task_200806270248_6185_m_000933_0 933 Map
SUCCEEDED
997 0 task_200806270248_6185_m_000856_0 856 Map
SUCCEEDED
998 0 task_200806270248_6185_m_000885_0 885 Map
SUCCEEDED
999 0 task_200806270248_6185_m_000804_0 804 Map
SUCCEEDED
1000 0 task_200806270248_6185_m_000986_0 986 Map
SUCCEEDED *first copy begins*
1001 0 task_200806270248_6185_m_000999_0 999 Map
SUCCEEDED
1002 0 task_200806270248_6185_m_000990_0 990 Map
SUCCEEDED
1003 0 task_200806270248_6185_m_000985_0 985 Map
SUCCEEDED
1004 0 task_200806270248_6185_m_000968_0 968 Map
SUCCEEDED
1005 0 task_200806270248_6185_m_001000_0 1000 Map
SUCCEEDED
1006 0 task_200806270248_6185_m_000996_0 996 Map
SUCCEEDED
1007 0 task_200806270248_6185_m_000974_0 974 Map
SUCCEEDED
1008 0 task_200806270248_6185_m_000998_0 998 Map
SUCCEEDED
1009 0 task_200806270248_6185_m_000982_0 982 Map
SUCCEEDED
1010 0 task_200806270248_6185_m_001010_0 1010 Map
SUCCEEDED
1011 0 task_200806270248_6185_m_000959_0 959 Map
SUCCEEDED
1012 0 task_200806270248_6185_m_000991_0 991 Map
SUCCEEDED *first copy ends*
1013 0 task_200806270248_6185_m_000986_0 986 Map
SUCCEEDED *second copy begins*
1014 0 task_200806270248_6185_m_000999_0 999 Map
SUCCEEDED
1015 0 task_200806270248_6185_m_000990_0 990 Map
SUCCEEDED
1016 0 task_200806270248_6185_m_000985_0 985 Map
SUCCEEDED
1017 0 task_200806270248_6185_m_000968_0 968 Map
SUCCEEDED
1018 0 task_200806270248_6185_m_001000_0 1000 Map
SUCCEEDED
1019 0 task_200806270248_6185_m_000996_0 996 Map
SUCCEEDED
1020 0 task_200806270248_6185_m_000974_0 974 Map
SUCCEEDED
1021 0 task_200806270248_6185_m_000998_0 998 Map
SUCCEEDED
1022 0 task_200806270248_6185_m_000982_0 982 Map
SUCCEEDED
1023 0 task_200806270248_6185_m_001010_0 1010 Map
SUCCEEDED
1024 0 task_200806270248_6185_m_000959_0 959 Map
SUCCEEDED
1025 0 task_200806270248_6185_m_000991_0 991 Map
SUCCEEDED *second copy ends*
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