[HBASE-25838] Use double instead of Double in StochasticLoadBalancer

• Type: Sub-task
• Status: Resolved
• Priority: Major
• Resolution: Fixed
• Fix Version/s: 3.0.0-alpha-1, 2.5.0, 2.4.3, 2.3.6
• Component/s: Balancer, Performance
• Hadoop Flags: Reviewed
• Assignee: Duo Zhang
• Reporter: Duo Zhang
• Created: 03/May/21 14:28
• Updated: 05/May/21 08:05
• Resolved: 05/May/21 08:05

Description

  // to save and report costs to JMX
  private Double curOverallCost = 0d;
  private Double[] tempFunctionCosts;
  private Double[] curFunctionCosts;

It seems we never do null check on these field or the elements, so I do not see any reason we should use Double here. Just use double instead.

Issue Links

• links to: GitHub Pull Request #3221