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Wei-Chiu Chuang commented on HDFS-15975: ---------------------------------------- Note: DFSHedgedReadMetrics is a Private scope class. However, it is returned by DistributedFileSystem#getHedgedReadMetrics() (it is a semi-public class) so it's a potential breaker. > Use LongAdder instead of AtomicLong > ----------------------------------- > > Key: HDFS-15975 > URL: https://issues.apache.org/jira/browse/HDFS-15975 > Project: Hadoop HDFS > Issue Type: Wish > Reporter: tomscut > Assignee: tomscut > Priority: Minor > Labels: pull-request-available > Fix For: 3.3.1, 3.4.0 > > Time Spent: 6h 10m > Remaining Estimate: 0h > > When counting some indicators, we can use LongAdder instead of AtomicLong to > improve performance. The long value is not an atomic snapshot in LongAdder, > but I think we can tolerate that. -- This message was sent by Atlassian Jira (v8.3.4#803005) --------------------------------------------------------------------- To unsubscribe, e-mail: hdfs-issues-unsubscr...@hadoop.apache.org For additional commands, e-mail: hdfs-issues-h...@hadoop.apache.org