We have ambari cluster with 134 DATANODE machines,
in YARN --> CONFIG
configured as the following:
we want to remove the - /var/hadoop/yarn/local
from the configuration , and that required also YARN restart and maybe other services restart
we intend to do this action to avoid writing to the local disk ( /var )
since we have 143 data-node machines in our ambari cluster
we worry about this action of removing the line /var/hadoop/yarn/local from yarn.nodemanager.local-dirs ,
or maybe we can do it safety ?
we will happy to get hortonworks opinion
we know that generally not a good idea to use /hadoop/yarn/local for yarn.nodemanager.log-dirs which are container logs. Typically, we prefer to direct only these logs to all the Data mount points (like /grid/sdb/hadoop/yarn/local ).