Balancer provides a substantial RPC load on NameNode. It would be good to divert Balancer RPCs getBlocks(), etc. to ObserverNode. The main problem is that Balancer uses NamenodeProtocol, while ORPP currently supports only ClientProtocol.
- breaks
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HDFS-15032 Balancer crashes when it fails to contact an unavailable NN via ObserverReadProxyProvider
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- Resolved
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- is related to
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HDFS-13183 Standby NameNode process getBlocks request to reduce Active load
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- Resolved
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- relates to
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HDFS-14245 Class cast error in GetGroups with ObserverReadProxyProvider
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- Resolved
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HDFS-14979 [Observer Node] Balancer should submit getBlocks to Observer Node when possible
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- Resolved
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