LiAoNan created ZOOKEEPER-4057:
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Summary: NIOServerCnxnFactory.selectorThreads,using List instead
of HashSet is better
Key: ZOOKEEPER-4057
URL: https://issues.apache.org/jira/browse/ZOOKEEPER-4057
Project: ZooKeeper
Issue Type: Improvement
Reporter: LiAoNan
{code:java}
private final Set<SelectorThread> selectorThreads = new
HashSet<SelectorThread>();
{code}
Using List costs less memory and computing than HashSet.
{code:java}
private final List<SelectorThread> selectorThreads = new ArrayList<>();
{code}
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