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22da5cf89e
This commit adds the max_running_jobs setting from elasticsearch.yml into a node attribute called ml.max_open_jobs. Previously there was an assumption that max_running_jobs would be the same for all nodes in the cluster. However, during a rolling cluster restart where the value of the setting is being changed this clearly cannot be the case, and would cause unexpected/unpredictable limits to be used during the period when different nodes had different settings. For backwards compatibility, if another node in the cluster has not added its setting for max_running_jobs to the cluster state then the old (flawed but better than nothing) approach is applied, i.e. assume the remote node's setting for max_running_jobs is equal to that of the node deciding the job allocation. Relates elastic/x-pack-elasticsearch#2185 Original commit: elastic/x-pack-elasticsearch@1e62b89183