Mingliang Liu created HADOOP-13031: -------------------------------------- Summary: Refactor the code that maintains rack-aware counters in FileSystem$Statistics Key: HADOOP-13031 URL: https://issues.apache.org/jira/browse/HADOOP-13031 Project: Hadoop Common Issue Type: Improvement Reporter: Mingliang Liu Priority: Minor
According to discussion in [HDFS-10175], using a composite (e.g. enum map, array) data structure to manage the distance->bytesRead mapping will probably make the code simpler. # {{StatisticsData}} will be a bit shorter by delegating the operations to the composite data structure. # The {{incrementBytesReadByDistance(int distance, long newBytes)}} and {{getBytesReadByDistance(int distance)}} which switch-case all hard-code variables, may be simplified as we can set/get the {{bytesRead}} by distance directly from map/array. This jira is to track the discussion and effort of refactoring the code that maintains rack-aware counters. -- This message was sent by Atlassian JIRA (v6.3.4#6332)