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12.0へのアップグレード後にノードのアラートと通信できない

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環境

NetApp StorageGRID 12.0

問題

12.0にアップグレードすると、頻繁に 「Unable to communicate with node」 アラートが表示されます。
さらに、次のアラートも表示される場合があります：
  • Cassandra auto-compactor error
  • Cassandra compactions overloaded
  • Cassandra repair progress slow

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