[
https://issues.apache.org/jira/browse/HDDS-2166?focusedWorklogId=316723&page=com.atlassian.jira.plugin.system.issuetabpanels:worklog-tabpanel#worklog-316723
]
ASF GitHub Bot logged work on HDDS-2166:
----------------------------------------
Author: ASF GitHub Bot
Created on: 23/Sep/19 14:46
Start Date: 23/Sep/19 14:46
Worklog Time Spent: 10m
Work Description: elek commented on pull request #1505: HDDS-2166. Some
RPC metrics are missing from SCM prometheus endpoint
URL: https://github.com/apache/hadoop/pull/1505
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.
See: https://issues.apache.org/jira/browse/HDDS-2166
----------------------------------------------------------------
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: 316723)
Remaining Estimate: 0h
Time Spent: 10m
> 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: Elek, Marton
> Assignee: Elek, Marton
> Priority: Major
> Labels: pull-request-available
> Time Spent: 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
