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ASF GitHub Bot logged work on HDDS-2166: ---------------------------------------- Author: ASF GitHub Bot Created on: 27/Sep/19 10:29 Start Date: 27/Sep/19 10:29 Worklog Time Spent: 10m Work Description: elek commented on issue #1505: HDDS-2166. Some RPC metrics are missing from SCM prometheus endpoint URL: https://github.com/apache/hadoop/pull/1505#issuecomment-535885148 Thanks @xiaoyuyao the review. I will commit it after a new jenkins build. Debug System.out.println is removed (from the patch and also from the previous method). ---------------------------------------------------------------- This is an automated message from the Apache Git Service. To respond to the message, please log on to GitHub and use the URL above to go to the specific comment. For queries about this service, please contact Infrastructure at: us...@infra.apache.org Issue Time Tracking ------------------- Worklog Id: (was: 319477) Time Spent: 1h 10m (was: 1h) > Some RPC metrics are missing from SCM prometheus endpoint > --------------------------------------------------------- > > Key: HDDS-2166 > URL: https://issues.apache.org/jira/browse/HDDS-2166 > Project: Hadoop Distributed Data Store > Issue Type: Bug > Reporter: Marton Elek > Assignee: Marton Elek > Priority: Major > Labels: pull-request-available > Time Spent: 1h 10m > Remaining Estimate: 0h > > In Hadoop metrics it's possible to register multiple metrics with the same > name but with different tags. For example each RpcServere has an own metrics > instance in SCM. > {code} > "name" : > "Hadoop:service=StorageContainerManager,name=RpcActivityForPort9860", > "name" : > "Hadoop:service=StorageContainerManager,name=RpcActivityForPort9863", > {code} > They are converted by PrometheusSink to a prometheus metric line with proper > name and tags. For example: > {code} > rpc_rpc_queue_time60s_num_ops{port="9860",servername="StorageContainerLocationProtocolService",context="rpc",hostname="72736061cbc5"} > 0 > {code} > The PrometheusSink uses a Map to cache all the recent values but > unfortunately the key contains only the name (rpc_rpc_queue_time60s_num_ops > in our example) but not the tags (port=...) > For this reason if there are multiple metrics with the same name, only the > first one will be displayed. > As a result in SCM only the metrics of the first RPC server can be exported > to the prometheus endpoint. -- 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