Elasticsearch pod become unable after the cluster scaling down

Solution Unverified - Updated -

Issue

  • The elasticsearch cluster with 3 pods was failed after scaling down 3 -> 1 pods.
  • The scaling down 3 -> 2 pods was also failed with OutOfMemoryError Error.

Environment

  • OpenShift Container Platform
    • 3.9
  • Elasticsearch
    • 2.4.x

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