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  1. HBase
  2. HBASE-25649

Complete the work on moving all the balancer related classes to hbase-balancer module

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    • Umbrella
    • Status: Resolved
    • Major
    • Resolution: Fixed
    • None
    • 3.0.0-alpha-1
    • Balancer
    • None
    • Reviewed
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      Introduced a ClusterInfoProvider as a bridge for LoadBalancer implementation to get cluster information and operate on the cluster, so the LoadBalancer implementation does not need to depend on HMaster/MasterServices directly. So then we could move most LoadBalancer related code to hbase-balancer module. MasterClusterInfoProvider is the actual implementation class for ClusterInfoProvider.

      Moved most unit tests for load balancer to hbase-balancer module, unless it requires starting a mini cluster.

      RSGroupBasedLoadBalancer and related code are still in hbase-server module. As we still have lots of migration and compatibility code, which makes it deeply tied togather with HMaster/MasterServices. We could try to move it again in 4.0.0, when we have purged the migration and compatibility code.
      Show
      Introduced a ClusterInfoProvider as a bridge for LoadBalancer implementation to get cluster information and operate on the cluster, so the LoadBalancer implementation does not need to depend on HMaster/MasterServices directly. So then we could move most LoadBalancer related code to hbase-balancer module. MasterClusterInfoProvider is the actual implementation class for ClusterInfoProvider. Moved most unit tests for load balancer to hbase-balancer module, unless it requires starting a mini cluster. RSGroupBasedLoadBalancer and related code are still in hbase-server module. As we still have lots of migration and compatibility code, which makes it deeply tied togather with HMaster/MasterServices. We could try to move it again in 4.0.0, when we have purged the migration and compatibility code.

    Description

      This is the follow up issue of HBASE-23933, where we set up the new hbase-balancer module and moved several classes into it.

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          is related to

          Umbrella - An overarching type made of sub-tasks HBASE-25675 Shrink size of hbase-server module

          • Major - Major loss of function.
          • Open

          Umbrella - An overarching type made of sub-tasks HBASE-25953 Move rs group related balancer code to hbase-balancer module

          • Major - Major loss of function.
          • Open
          relates to

          Umbrella - An overarching type made of sub-tasks HBASE-25832 Performance improvements for StochasticLoadBalancer

          • Major - Major loss of function.
          • Open

          Umbrella - An overarching type made of sub-tasks HBASE-25826 Revisit the synchronization of balancer implementation

          • Major - Major loss of function.
          • Resolved
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              zhangduo Duo Zhang
              zhangduo Duo Zhang
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                Updated:
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