Arpit Agarwal created HADOOP-11725: -------------------------------------- Summary: Minor cleanup of BlockPoolManager#getAllNamenodeThreads Key: HADOOP-11725 URL: https://issues.apache.org/jira/browse/HADOOP-11725 Project: Hadoop Common Issue Type: Bug Affects Versions: 2.6.0 Reporter: Arpit Agarwal Assignee: Arpit Agarwal Priority: Minor
{{BlockPoolManager#getAllNamenodeThreads}} can avoid unnecessary list to array conversion and vice versa by returning an UnmodifiableList. Since NN addition/removal is relatively rare we can just use a CopyOnWriteArrayList for concurrency. -- This message was sent by Atlassian JIRA (v6.3.4#6332)