[ https://issues.apache.org/jira/browse/HADOOP-14502?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]
Erik Krogen updated HADOOP-14502: --------------------------------- Release Note: Remove the BlockReport(NumOps,AvgTime) metrics emitted under the NameNodeActivity context in favor of StorageBlockReport(NumOps,AvgTime) which more accurately represent the metric. Same for the corresponding quantile metrics. > Confusion/name conflict between NameNodeActivity#BlockReportNumOps and > RpcDetailedActivity#BlockReportNumOps > ------------------------------------------------------------------------------------------------------------ > > Key: HADOOP-14502 > URL: https://issues.apache.org/jira/browse/HADOOP-14502 > Project: Hadoop Common > Issue Type: Improvement > Components: metrics > Reporter: Erik Krogen > Assignee: Erik Krogen > Priority: Minor > Labels: Incompatible > Fix For: 3.0.0-alpha4 > > Attachments: HADOOP-14502.000.patch, HADOOP-14502.001.patch, > HADOOP-14502.002.patch > > > Currently the {{BlockReport(NumOps|AvgTime)}} metrics emitted under the > {{RpcDetailedActivity}} context and those emitted under the > {{NameNodeActivity}} context are actually reporting different things despite > having the same name. {{NameNodeActivity}} reports the count/time of _per > storage_ block reports, whereas {{RpcDetailedActivity}} reports the > count/time of _per datanode_ block reports. This makes for a confusing > experience with two metrics having the same name reporting different values. > We already have the {{StorageBlockReportsOps}} metric under > {{NameNodeActivity}}. Can we make {{StorageBlockReport}} a {{MutableRate}} > metric and remove {{NameNodeActivity#BlockReport}} metric? Open to other > suggestions about how to address this as well. The 3.0 release seems a good > time to make this incompatible change. -- This message was sent by Atlassian JIRA (v6.4.14#64029) --------------------------------------------------------------------- To unsubscribe, e-mail: common-issues-unsubscr...@hadoop.apache.org For additional commands, e-mail: common-issues-h...@hadoop.apache.org