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Blocking hosts participation in any cluster activity
Request for enhancement to have slot allocations get blocked for spark drivers / executors on nodes that are already declared as blocked by EGO in a scenario in which the Instance Group has not yet been deployed to those nodes. Today, when a node is added, if a job gets dispatched to one of the newly added nodes by the spark master before the SIG is deployed, it takes the spark master a configured number of attempts in a configured amount of time for the spark master to block the node. This behavior makes those dispatched jobs fail and the overall performance is reduced. If those nodes were blocked at the spark level as well, performance would be enhanced as no executor would have to fail before being scheduled to a working node.
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