signals - Why spark executor receives SIGTERM? -

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i using spark api (spark core api, not stream,sql etc.) see kind of error in spark dumped log: spark environment: 1.3.1 yarn-client

error executor.coarsegrainedexecutorbackend: received signal 15: sigterm
  1. who triggers sigterm. yarn,spark or myself?
  2. will signal terminate spark executor? if not, wow affect spark program.

i press ctrl+c, whould sigint. if yarn kill executor, sigkill.

you find reason in yarn logs. if activated log aggregation, can type

yarn logs -applicationid [app_id]

and lookup exceptions.


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