Go through official docs
- For the official docs of Yarn node label, plase see here.
Overview
- Node label is a way to group nodes with similiar characteristics and applications can specify where to run.
- Now only node partition is supported, which is:
- One node can have only one node partition, so a cluster is partitioned to serveral disjoint sub-clusters by node partitions.
- User need to configure how much resources of each partition can be used by different queues.
- There are two kinds of node partitions:
- Exclusive: containers will be allocated to nodes with exactly match node partition.
- Non-exclusive: if a partition is non-exclusive, it shares idle resource to container request DEFAULT partition.