[HDDS-15070] support of multiple raft groups to handle OM bucket related write requests#10104
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…ed write requests
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* fix double buffer flash issue for the case of multiple RAFT groups * fix inconsistency issue between the main RAFT group and the bucket related RAFT groups * fix client side global proxy contention * fix bucket to raft group assigner
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What changes were proposed in this pull request:
Separate RAFT groups and state machines to handle bucket-related write requests on the OM side for parallelizing purposes of the highly contention write requests (single leader OM is a bottleneck)
What is the link to the Apache JIRA
https://issues.apache.org/jira/browse/HDDS-15070
How was this patch tested?
Manual testing, new unit tests, new acceptance tests