Sunil Kalva created YARN-11475:
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Summary: Support for a new flag to decide whether to delete or
retain the NM local state with a decommission command
Key: YARN-11475
URL: https://issues.apache.org/jira/browse/YARN-11475
Project: Hadoop YARN
Issue Type: New Feature
Components: client, nodemanager, resourcemanager
Reporter: Sunil Kalva
Assignee: Sunil Kalva
We want to retain NM local state store while decommissioning the NM node in a
few cases. For example, if there are any auxiliary services(for example
external spark shuffle service) running and have created local data then when
we decommission and recommission after upgrades, we want to retain the NM local
state store so that these services keep serving the earlier data.
This change is about passing a new flag from yarn admin CLI (-deleteState
default true) with refreshNodes command to RM, and then sending the same to the
NM along with noderefresh response to NM from RM.
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