运行 distcp 作业我遇到以下问题：几乎所有地图任务都被标记为成功，但附注说 Container 已被杀死。
在在线界面上，地图作业的日志显示：Progress 100.00 State SUCCEEDED
但在 Note 下，它表示几乎每次尝试 (~200) 容器都被 ApplicationMaster 杀死。容器被 ApplicationMaster 杀死。容器应要求被杀死。退出代码是 143
在与尝试关联的日志文件中，我可以看到一条日志显示任务“尝试_xxxxxxxxx_0”已完成。
对于所有作业/尝试，stderr 输出为空。
在查看应用程序主日志并遵循成功（但被杀死）的尝试之一时，我发现以下日志：
2017-01-05 10:27:22,772 INFO [AsyncDispatcher event handler] org.apache.hadoop.mapreduce.v2.app.job.impl.TaskImpl: Task succeeded with attempt attempt_1483370705805_4012_m_000000_0
2017-01-05 10:27:22,773 INFO [AsyncDispatcher event handler] org.apache.hadoop.mapreduce.v2.app.job.impl.TaskImpl: task_1483370705805_4012_m_000000 Task Transitioned from RUNNING to SUCCEEDED
2017-01-05 10:27:22,775 INFO [AsyncDispatcher event handler] org.apache.hadoop.mapreduce.v2.app.job.impl.JobImpl: Num completed Tasks: 1
2017-01-05 10:27:22,775 INFO [AsyncDispatcher event handler] org.apache.hadoop.mapreduce.v2.app.job.impl.JobImpl: job_1483370705805_4012Job Transitioned from RUNNING to COMMITTING
2017-01-05 10:27:22,776 INFO [CommitterEvent Processor #1] org.apache.hadoop.mapreduce.v2.app.commit.CommitterEventHandler: Processing the event EventType: JOB_COMMIT
2017-01-05 10:27:23,118 INFO [RMCommunicator Allocator] org.apache.hadoop.mapreduce.v2.app.rm.RMContainerAllocator: Before Scheduling: PendingReds:0 ScheduledMaps:0 ScheduledReds:0 AssignedMaps:1 AssignedReds:0 CompletedMaps:1 CompletedReds:0 ContAlloc:1 ContRel:0 HostLocal:0 RackLocal:0
2017-01-05 10:27:24,125 INFO [RMCommunicator Allocator] org.apache.hadoop.mapreduce.v2.app.rm.RMContainerAllocator: Received completed container container_e116_1483370705805_4012_01_000002
2017-01-05 10:27:24,126 INFO [RMCommunicator Allocator] org.apache.hadoop.mapreduce.v2.app.rm.RMContainerAllocator: After Scheduling: PendingReds:0 ScheduledMaps:0 ScheduledReds:0 AssignedMaps:0 AssignedReds:0 CompletedMaps:1 CompletedReds:0 ContAlloc:1 ContRel:0 HostLocal:0 RackLocal:0
2017-01-05 10:27:24,126 INFO [AsyncDispatcher event handler] org.apache.hadoop.mapreduce.v2.app.job.impl.TaskAttemptImpl: Diagnostics report from attempt_1483370705805_4012_m_000000_0: Container killed by the ApplicationMaster.
Container killed on request. Exit code is 143
Container exited with a non-zero exit code 143
我设置了“mapreduce.map.speculative=false”！
所有 MAP 任务都成功了（distcp 作业没有 REDUCE），但是 MAPREDUCE 进行了很长时间（几个小时），然后它成功了，distcp 作业完成了。
我正在运行'纱线版本'= Hadoop 2.5.0-cdh5.3.1
我应该担心这个吗？是什么导致容器被杀死？任何建议将不胜感激！