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star commented on HDFS-14403: ----------------------------- [~xkrogen], Impressive results. Can you give a detailed information about how much listStatus on a directory with one subdirectories and listStatus on a directory with 1000 subdirectories in your benckmark tests? Is it possible that scheduler with LockCostProvider schedules more low cost operations like listStatus on a directory with one subdirectories, which results in a lower queue time. Or it makes sense for LockCostProvider. > Cost-Based RPC FairCallQueue > ---------------------------- > > Key: HDFS-14403 > URL: https://issues.apache.org/jira/browse/HDFS-14403 > Project: Hadoop HDFS > Issue Type: Improvement > Components: ipc, namenode > Reporter: Erik Krogen > Assignee: Christopher Gregorian > Priority: Major > Labels: qos, rpc > Attachments: CostBasedFairCallQueueDesign_v0.pdf, HDFS-14403.001.patch > > > HADOOP-15016 initially described extensions to the Hadoop FairCallQueue > encompassing both cost-based analysis of incoming RPCs, as well as support > for reservations of RPC capacity for system/platform users. This JIRA intends > to track the former, as HADOOP-15016 was repurposed to more specifically > focus on the reservation portion of the work. -- This message was sent by Atlassian JIRA (v7.6.3#76005) --------------------------------------------------------------------- To unsubscribe, e-mail: hdfs-issues-unsubscr...@hadoop.apache.org For additional commands, e-mail: hdfs-issues-h...@hadoop.apache.org