[
https://issues.apache.org/jira/browse/HDFS-17042?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17739979#comment-17739979
]
ASF GitHub Bot commented on HDFS-17042:
---------------------------------------
xinglin commented on PR #5804:
URL: https://github.com/apache/hadoop/pull/5804#issuecomment-1620620347
mvn install command failed, due to some transient network connection issue.
```
[ERROR] Plugin org.apache.maven.plugins:maven-failsafe-plugin:3.0.0-M1 or
one of its dependencies could not be resolved: Failed to read artifact
descriptor for org.apache.maven.plugins:maven-failsafe-plugin:jar:3.0.0-M1:
Could not transfer artifact
org.apache.maven.plugins:maven-failsafe-plugin:pom:3.0.0-M1 from/to central
(https://repo.maven.apache.org/maven2): Connection reset -> [Help 1]
```
Able to build locally.
```
~/p/h/branch-3.3 (HDFS-17042-branch-3.3)> mvn clean install -DskipTests
[INFO] Apache Hadoop Client Packaging Invariants for Test . SUCCESS [ 0.467
s]
[INFO] Apache Hadoop Client Packaging Integration Tests ... SUCCESS [ 0.204
s]
[INFO] Apache Hadoop Distribution ......................... SUCCESS [ 0.748
s]
[INFO] Apache Hadoop Client Modules ....................... SUCCESS [ 0.029
s]
[INFO] Apache Hadoop Tencent COS Support .................. SUCCESS [ 0.937
s]
[INFO] Apache Hadoop Cloud Storage ........................ SUCCESS [ 0.521
s]
[INFO] Apache Hadoop Cloud Storage Project ................ SUCCESS [ 0.029
s]
[INFO]
------------------------------------------------------------------------
[INFO] BUILD SUCCESS
[INFO]
------------------------------------------------------------------------
[INFO] Total time: 17:44 min
[INFO] Finished at: 2023-07-04T11:45:00-07:00
```
> Add rpcCallSuccesses and OverallRpcProcessingTime to RpcMetrics for Namenode
> ----------------------------------------------------------------------------
>
> Key: HDFS-17042
> URL: https://issues.apache.org/jira/browse/HDFS-17042
> Project: Hadoop HDFS
> Issue Type: Improvement
> Components: hdfs
> Affects Versions: 3.4.0, 3.3.9
> Reporter: Xing Lin
> Assignee: Xing Lin
> Priority: Major
> Labels: pull-request-available
> Fix For: 3.4.0
>
>
> We'd like to add two new types of metrics to the existing NN
> RpcMetrics/RpcDetailedMetrics. These two metrics can then be used as part of
> SLA/SLO for the HDFS service.
> * {_}RpcCallSuccesses{_}: it measures the number of RPC requests where they
> are successfully processed by a NN (e.g., with a response with an RpcStatus
> {_}RpcStatusProto.SUCCESS){_}{_}.{_} Then, together with {_}RpcQueueNumOps
> ({_}which refers the total number of RPC requests{_}){_}, we can derive the
> RpcErrorRate for our NN, as (RpcQueueNumOps - RpcCallSuccesses) /
> RpcQueueNumOps.
> * OverallRpcProcessingTime for each RPC method: this metric measures the
> overall RPC processing time for each RPC method at the NN. It covers the time
> from when a request arrives at the NN to when a response is sent back. We are
> already emitting processingTime for each RPC method today in
> RpcDetailedMetrics. We want to extend it to emit overallRpcProcessingTime for
> each RPC method, which includes enqueueTime, queueTime, processingTime,
> responseTime, and handlerTime.
>
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