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# ask-community
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Tomakhina Olha

02/11/2023, 2:16 PM
hi! When using DynamicOutput and .map function sometimes I receive function on the dynamic op. I see in stackoverflow that increasing memory helps… But there are 32GB of Memory at ec2 instance for all docker containters without limits… and one uses ~ 0.5-2gb really. ENGINE_EVENT
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Multiprocess executor: child process for step load_news_urls[20211230121700] was terminated by signal 7 (SIGBUS).
dagster._core.executor.child_process_executor.ChildProcessCrashException

Stack Trace:
  File "/usr/local/lib/python3.10/site-packages/dagster/_core/executor/multiprocess.py", line 240, in execute
    event_or_none = next(step_iter)
,  File "/usr/local/lib/python3.10/site-packages/dagster/_core/executor/multiprocess.py", line 357, in execute_step_out_of_process
    for ret in execute_child_process_command(multiproc_ctx, command):
,  File "/usr/local/lib/python3.10/site-packages/dagster/_core/executor/child_process_executor.py", line 174, in execute_child_process_command
    raise ChildProcessCrashException(exit_code=process.exitcode)
STEP_FAILURE
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dagster._core.executor.child_process_executor.ChildProcessCrashException

Stack Trace:
  File "/usr/local/lib/python3.10/site-packages/dagster/_core/executor/multiprocess.py", line 240, in execute
    event_or_none = next(step_iter)
,  File "/usr/local/lib/python3.10/site-packages/dagster/_core/executor/multiprocess.py", line 357, in execute_step_out_of_process
    for ret in execute_child_process_command(multiproc_ctx, command):
,  File "/usr/local/lib/python3.10/site-packages/dagster/_core/executor/child_process_executor.py", line 174, in execute_child_process_command
    raise ChildProcessCrashException(exit_code=process.exitcode)
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