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https://issues.apache.org/jira/browse/HDFS-16646?focusedWorklogId=787081&page=com.atlassian.jira.plugin.system.issuetabpanels:worklog-tabpanel#worklog-787081
]
ASF GitHub Bot logged work on HDFS-16646:
-----------------------------------------
Author: ASF GitHub Bot
Created on: 01/Jul/22 12:38
Start Date: 01/Jul/22 12:38
Worklog Time Spent: 10m
Work Description: hadoop-yetus commented on PR #4519:
URL: https://github.com/apache/hadoop/pull/4519#issuecomment-1172302498
:confetti_ball: **+1 overall**
| Vote | Subsystem | Runtime | Logfile | Comment |
|:----:|----------:|--------:|:--------:|:-------:|
| +0 :ok: | reexec | 0m 39s | | Docker mode activated. |
|||| _ Prechecks _ |
| +1 :green_heart: | dupname | 0m 1s | | No case conflicting files
found. |
| +0 :ok: | codespell | 0m 0s | | codespell was not available. |
| +0 :ok: | detsecrets | 0m 0s | | detect-secrets was not available.
|
| +0 :ok: | xmllint | 0m 0s | | xmllint was not available. |
| +1 :green_heart: | @author | 0m 0s | | The patch does not contain
any @author tags. |
| +1 :green_heart: | test4tests | 0m 0s | | The patch appears to
include 4 new or modified test files. |
|||| _ trunk Compile Tests _ |
| +1 :green_heart: | mvninstall | 38m 28s | | trunk passed |
| +1 :green_heart: | compile | 0m 57s | | trunk passed with JDK
Private Build-11.0.15+10-Ubuntu-0ubuntu0.20.04.1 |
| +1 :green_heart: | compile | 0m 47s | | trunk passed with JDK
Private Build-1.8.0_312-8u312-b07-0ubuntu1~20.04-b07 |
| +1 :green_heart: | checkstyle | 0m 42s | | trunk passed |
| +1 :green_heart: | mvnsite | 0m 52s | | trunk passed |
| +1 :green_heart: | javadoc | 0m 58s | | trunk passed with JDK
Private Build-11.0.15+10-Ubuntu-0ubuntu0.20.04.1 |
| +1 :green_heart: | javadoc | 1m 7s | | trunk passed with JDK
Private Build-1.8.0_312-8u312-b07-0ubuntu1~20.04-b07 |
| +1 :green_heart: | spotbugs | 1m 40s | | trunk passed |
| +1 :green_heart: | shadedclient | 21m 56s | | branch has no errors
when building and testing our client artifacts. |
|||| _ Patch Compile Tests _ |
| +1 :green_heart: | mvninstall | 0m 41s | | the patch passed |
| +1 :green_heart: | compile | 0m 43s | | the patch passed with JDK
Private Build-11.0.15+10-Ubuntu-0ubuntu0.20.04.1 |
| +1 :green_heart: | javac | 0m 43s | |
hadoop-hdfs-project_hadoop-hdfs-rbf-jdkPrivateBuild-11.0.15+10-Ubuntu-0ubuntu0.20.04.1
with JDK Private Build-11.0.15+10-Ubuntu-0ubuntu0.20.04.1 generated 0 new + 54
unchanged - 1 fixed = 54 total (was 55) |
| +1 :green_heart: | compile | 0m 37s | | the patch passed with JDK
Private Build-1.8.0_312-8u312-b07-0ubuntu1~20.04-b07 |
| +1 :green_heart: | javac | 0m 37s | |
hadoop-hdfs-project_hadoop-hdfs-rbf-jdkPrivateBuild-1.8.0_312-8u312-b07-0ubuntu1~20.04-b07
with JDK Private Build-1.8.0_312-8u312-b07-0ubuntu1~20.04-b07 generated 0 new
+ 54 unchanged - 1 fixed = 54 total (was 55) |
| +1 :green_heart: | blanks | 0m 0s | | The patch has no blanks
issues. |
| -0 :warning: | checkstyle | 0m 25s |
[/results-checkstyle-hadoop-hdfs-project_hadoop-hdfs-rbf.txt](https://ci-hadoop.apache.org/job/hadoop-multibranch/job/PR-4519/4/artifact/out/results-checkstyle-hadoop-hdfs-project_hadoop-hdfs-rbf.txt)
| hadoop-hdfs-project/hadoop-hdfs-rbf: The patch generated 1 new + 1
unchanged - 0 fixed = 2 total (was 1) |
| +1 :green_heart: | mvnsite | 0m 42s | | the patch passed |
| +1 :green_heart: | javadoc | 0m 37s | | the patch passed with JDK
Private Build-11.0.15+10-Ubuntu-0ubuntu0.20.04.1 |
| +1 :green_heart: | javadoc | 0m 56s | | the patch passed with JDK
Private Build-1.8.0_312-8u312-b07-0ubuntu1~20.04-b07 |
| +1 :green_heart: | spotbugs | 1m 25s | | the patch passed |
| +1 :green_heart: | shadedclient | 21m 3s | | patch has no errors
when building and testing our client artifacts. |
|||| _ Other Tests _ |
| +1 :green_heart: | unit | 22m 54s | | hadoop-hdfs-rbf in the patch
passed. |
| +1 :green_heart: | asflicense | 0m 50s | | The patch does not
generate ASF License warnings. |
| | | 120m 51s | | |
| Subsystem | Report/Notes |
|----------:|:-------------|
| Docker | ClientAPI=1.41 ServerAPI=1.41 base:
https://ci-hadoop.apache.org/job/hadoop-multibranch/job/PR-4519/4/artifact/out/Dockerfile
|
| GITHUB PR | https://github.com/apache/hadoop/pull/4519 |
| Optional Tests | dupname asflicense compile javac javadoc mvninstall
mvnsite unit shadedclient spotbugs checkstyle codespell detsecrets xmllint |
| uname | Linux 6d9312eae1ca 4.15.0-175-generic #184-Ubuntu SMP Thu Mar 24
17:48:36 UTC 2022 x86_64 x86_64 x86_64 GNU/Linux |
| Build tool | maven |
| Personality | dev-support/bin/hadoop.sh |
| git revision | trunk / ac1e8c928b2d6f14e0e1beb7f2e8a790cf517bc0 |
| Default Java | Private Build-1.8.0_312-8u312-b07-0ubuntu1~20.04-b07 |
| Multi-JDK versions | /usr/lib/jvm/java-11-openjdk-amd64:Private
Build-11.0.15+10-Ubuntu-0ubuntu0.20.04.1
/usr/lib/jvm/java-8-openjdk-amd64:Private
Build-1.8.0_312-8u312-b07-0ubuntu1~20.04-b07 |
| Test Results |
https://ci-hadoop.apache.org/job/hadoop-multibranch/job/PR-4519/4/testReport/ |
| Max. process+thread count | 2817 (vs. ulimit of 5500) |
| modules | C: hadoop-hdfs-project/hadoop-hdfs-rbf U:
hadoop-hdfs-project/hadoop-hdfs-rbf |
| Console output |
https://ci-hadoop.apache.org/job/hadoop-multibranch/job/PR-4519/4/console |
| versions | git=2.25.1 maven=3.6.3 spotbugs=4.2.2 |
| Powered by | Apache Yetus 0.14.0 https://yetus.apache.org |
This message was automatically generated.
Issue Time Tracking
-------------------
Worklog Id: (was: 787081)
Time Spent: 50m (was: 40m)
> RBF: Support an elastic RouterRpcFairnessPolicyController
> ---------------------------------------------------------
>
> Key: HDFS-16646
> URL: https://issues.apache.org/jira/browse/HDFS-16646
> Project: Hadoop HDFS
> Issue Type: Improvement
> Reporter: ZanderXu
> Assignee: ZanderXu
> Priority: Major
> Labels: pull-request-available
> Time Spent: 50m
> Remaining Estimate: 0h
>
> As we all known, `StaticRouterRpcFairnessPolicyController` is very helpfully
> for RBF to minimize impact of clients connecting to healthy vs unhealthy
> nameNodes.
> But in prod environment, the traffic of clients accessing each NS and the
> pressure of downstream namenodes are dynamically changed. So if we only have
> one static permit conf, RBF cannot able to adapt to the changes in traffic to
> achieve optimal results.
> So here I propose an elastic RouterRpcFairnessPolicyController to help RBF
> adapt to traffic changes to achieve an optimal result.
> The overall idea is:
> * Each name service can configured the exclusive permits like
> `StaticRouterRpcFairnessPolicyController`
> * TotalPermits is more than sum(NsExclusivePermit) and mark TotalPermits -
> sum(NsExclusivePermit) as SharedPermits
> * Each name service can properly preempt the SharedPermits after it's own
> exclusive permits is used up.
> * But the maximum value of SharedPermits preempted by each nameservice should
> be limited. Such as 20% of SharedPermits.
> Suppose we have 200 handlers and 5 name services, and each name services
> configured different exclusive Permits, like:
> | NS1 | NS2 | NS3 | NS4 | NS5 | Concurrent NS |
> |-- | -- | -- | -- | -- | -- |
> | 9 | 11 | 8 | 12 | 10 | 50 |
> The `sum(NsExclusivePermit)` is 100, and the `SharedPermits =
> TotalPermits(200) - Sum(NsExclusivePermit)(100) = 100`
> Suppose we configure that each nameservice can preempt up to 20% of
> TotalPermits, marked as `elasticPercent`.
> Then from the point view of a single NS, the permits it may be can use are as
> follow:
> - Exclusive Permits, which is cannot be used by other name services.
> - Limited SharedPermits, whether is can use so many shared permits depends on
> the remaining number of SharedPermits, because the SharedPermits is be
> preempted by all nameservices.
> If we configure the `elasticPercent=100`, it means one nameservices can use
> up all SharedPermits.
> If we configure the `elasticPercent=0`, it means nameservice can only use
> it's exclusive Permits.
> If we configure the `elasticPercent=20`, it means that the RBF can tolerate 5
> unhealthy name services at the same time.
> In our prod environment, we configured as follow, and it works well:
> - RBF has 3000 handlers
> - Each nameservice has 10 exclusive permits
> - `elasticPercent` is 30%
> Of course, we need to configure reasonable parameters according to the prod
> traffic.
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