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https://issues.apache.org/jira/browse/HDFS-14090?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17231108#comment-17231108
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Hadoop QA commented on HDFS-14090:
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|| Vote || Subsystem || Runtime || Logfile || Comment ||
| {color:blue}0{color} | {color:blue} reexec {color} | {color:blue} 0m
49s{color} | | {color:blue} Docker mode activated. {color} |
|| || || || {color:brown} Prechecks {color} || ||
| {color:green}+1{color} | {color:green} dupname {color} | {color:green} 0m
0s{color} | | {color:green} No case conflicting files found. {color} |
| {color:green}+1{color} | {color:green} @author {color} | {color:green} 0m
0s{color} | | {color:green} The patch does not contain any @author tags.
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| {color:green}+1{color} | {color:green} test4tests {color} | {color:green} 0m
0s{color} | | {color:green} The patch appears to include 3 new or modified
test files. {color} |
|| || || || {color:brown} trunk Compile Tests {color} || ||
| {color:green}+1{color} | {color:green} mvninstall {color} | {color:green} 23m
36s{color} | | {color:green} trunk passed {color} |
| {color:green}+1{color} | {color:green} compile {color} | {color:green} 0m
40s{color} | | {color:green} trunk passed with JDK
Ubuntu-11.0.9+11-Ubuntu-0ubuntu1.18.04.1 {color} |
| {color:green}+1{color} | {color:green} compile {color} | {color:green} 0m
31s{color} | | {color:green} trunk passed with JDK Private
Build-1.8.0_272-8u272-b10-0ubuntu1~18.04-b10 {color} |
| {color:green}+1{color} | {color:green} checkstyle {color} | {color:green} 0m
22s{color} | | {color:green} trunk passed {color} |
| {color:green}+1{color} | {color:green} mvnsite {color} | {color:green} 0m
38s{color} | | {color:green} trunk passed {color} |
| {color:green}+1{color} | {color:green} shadedclient {color} | {color:green}
18m 49s{color} | | {color:green} branch has no errors when building and
testing our client artifacts. {color} |
| {color:green}+1{color} | {color:green} javadoc {color} | {color:green} 0m
37s{color} | | {color:green} trunk passed with JDK
Ubuntu-11.0.9+11-Ubuntu-0ubuntu1.18.04.1 {color} |
| {color:green}+1{color} | {color:green} javadoc {color} | {color:green} 0m
49s{color} | | {color:green} trunk passed with JDK Private
Build-1.8.0_272-8u272-b10-0ubuntu1~18.04-b10 {color} |
| {color:blue}0{color} | {color:blue} spotbugs {color} | {color:blue} 1m
18s{color} | | {color:blue} Used deprecated FindBugs config; considering
switching to SpotBugs. {color} |
| {color:green}+1{color} | {color:green} findbugs {color} | {color:green} 1m
15s{color} | | {color:green} trunk passed {color} |
|| || || || {color:brown} Patch Compile Tests {color} || ||
| {color:green}+1{color} | {color:green} mvninstall {color} | {color:green} 0m
34s{color} | | {color:green} the patch passed {color} |
| {color:green}+1{color} | {color:green} compile {color} | {color:green} 0m
34s{color} | | {color:green} the patch passed with JDK
Ubuntu-11.0.9+11-Ubuntu-0ubuntu1.18.04.1 {color} |
| {color:green}+1{color} | {color:green} javac {color} | {color:green} 0m
34s{color} | | {color:green} the patch passed {color} |
| {color:green}+1{color} | {color:green} compile {color} | {color:green} 0m
28s{color} | | {color:green} the patch passed with JDK Private
Build-1.8.0_272-8u272-b10-0ubuntu1~18.04-b10 {color} |
| {color:green}+1{color} | {color:green} javac {color} | {color:green} 0m
28s{color} | | {color:green} the patch passed {color} |
| {color:green}+1{color} | {color:green} blanks {color} | {color:green} 0m
0s{color} | | {color:green} The patch has no blanks issues. {color} |
| {color:green}+1{color} | {color:green} checkstyle {color} | {color:green} 0m
16s{color} | | {color:green} the patch passed {color} |
| {color:green}+1{color} | {color:green} mvnsite {color} | {color:green} 0m
31s{color} | | {color:green} the patch passed {color} |
| {color:green}+1{color} | {color:green} xml {color} | {color:green} 0m
1s{color} | | {color:green} The patch has no ill-formed XML file. {color} |
| {color:green}+1{color} | {color:green} shadedclient {color} | {color:green}
16m 56s{color} | | {color:green} patch has no errors when building and testing
our client artifacts. {color} |
| {color:green}+1{color} | {color:green} javadoc {color} | {color:green} 0m
35s{color} | | {color:green} the patch passed with JDK
Ubuntu-11.0.9+11-Ubuntu-0ubuntu1.18.04.1 {color} |
| {color:green}+1{color} | {color:green} javadoc {color} | {color:green} 0m
52s{color} | | {color:green} the patch passed with JDK Private
Build-1.8.0_272-8u272-b10-0ubuntu1~18.04-b10 {color} |
| {color:green}+1{color} | {color:green} findbugs {color} | {color:green} 1m
21s{color} | | {color:green} the patch passed {color} |
|| || || || {color:brown} Other Tests {color} || ||
| {color:green}+1{color} | {color:green} unit {color} | {color:green} 9m
16s{color} | | {color:green} hadoop-hdfs-rbf in the patch passed. {color} |
| {color:green}+1{color} | {color:green} asflicense {color} | {color:green} 0m
41s{color} | | {color:green} The patch does not generate ASF License warnings.
{color} |
| {color:black}{color} | {color:black} {color} | {color:black} 82m 10s{color} |
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|| Subsystem || Report/Notes ||
| Docker | ClientAPI=1.40 ServerAPI=1.40 base:
https://ci-hadoop.apache.org/job/PreCommit-HDFS-Build/300/artifact/out/Dockerfile
|
| JIRA Issue | HDFS-14090 |
| JIRA Patch URL |
https://issues.apache.org/jira/secure/attachment/13015182/HDFS-14090.025.patch |
| Optional Tests | dupname asflicense compile javac javadoc mvninstall mvnsite
unit shadedclient findbugs checkstyle xml |
| uname | Linux 63f0cae27b36 4.15.0-112-generic #113-Ubuntu SMP Thu Jul 9
23:41:39 UTC 2020 x86_64 x86_64 x86_64 GNU/Linux |
| Build tool | maven |
| Personality | personality/hadoop.sh |
| git revision | trunk / f5e6be337b281cc04f13d5e68f9d5ba8fbba8761 |
| Default Java | Private Build-1.8.0_272-8u272-b10-0ubuntu1~18.04-b10 |
| Multi-JDK versions |
/usr/lib/jvm/java-11-openjdk-amd64:Ubuntu-11.0.9+11-Ubuntu-0ubuntu1.18.04.1
/usr/lib/jvm/java-8-openjdk-amd64:Private
Build-1.8.0_272-8u272-b10-0ubuntu1~18.04-b10 |
| Test Results |
https://ci-hadoop.apache.org/job/PreCommit-HDFS-Build/300/testReport/ |
| Max. process+thread count | 3271 (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/PreCommit-HDFS-Build/300/console |
| versions | git=2.17.1 maven=3.6.0 findbugs=4.0.6 |
| Powered by | Apache Yetus 0.14.0-SNAPSHOT https://yetus.apache.org |
This message was automatically generated.
> RBF: Improved isolation for downstream name nodes. {Static}
> -----------------------------------------------------------
>
> Key: HDFS-14090
> URL: https://issues.apache.org/jira/browse/HDFS-14090
> Project: Hadoop HDFS
> Issue Type: New Feature
> Reporter: CR Hota
> Assignee: Fengnan Li
> Priority: Major
> Attachments: HDFS-14090-HDFS-13891.001.patch,
> HDFS-14090-HDFS-13891.002.patch, HDFS-14090-HDFS-13891.003.patch,
> HDFS-14090-HDFS-13891.004.patch, HDFS-14090-HDFS-13891.005.patch,
> HDFS-14090.006.patch, HDFS-14090.007.patch, HDFS-14090.008.patch,
> HDFS-14090.009.patch, HDFS-14090.010.patch, HDFS-14090.011.patch,
> HDFS-14090.012.patch, HDFS-14090.013.patch, HDFS-14090.014.patch,
> HDFS-14090.015.patch, HDFS-14090.016.patch, HDFS-14090.017.patch,
> HDFS-14090.018.patch, HDFS-14090.019.patch, HDFS-14090.020.patch,
> HDFS-14090.021.patch, HDFS-14090.022.patch, HDFS-14090.023.patch,
> HDFS-14090.024.patch, HDFS-14090.025.patch, RBF_ Isolation design.pdf
>
>
> Router is a gateway to underlying name nodes. Gateway architectures, should
> help minimize impact of clients connecting to healthy clusters vs unhealthy
> clusters.
> For example - If there are 2 name nodes downstream, and one of them is
> heavily loaded with calls spiking rpc queue times, due to back pressure the
> same with start reflecting on the router. As a result of this, clients
> connecting to healthy/faster name nodes will also slow down as same rpc queue
> is maintained for all calls at the router layer. Essentially the same IPC
> thread pool is used by router to connect to all name nodes.
> Currently router uses one single rpc queue for all calls. Lets discuss how we
> can change the architecture and add some throttling logic for
> unhealthy/slow/overloaded name nodes.
> One way could be to read from current call queue, immediately identify
> downstream name node and maintain a separate queue for each underlying name
> node. Another simpler way is to maintain some sort of rate limiter configured
> for each name node and let routers drop/reject/send error requests after
> certain threshold.
> This won’t be a simple change as router’s ‘Server’ layer would need redesign
> and implementation. Currently this layer is the same as name node.
> Opening this ticket to discuss, design and implement this feature.
>
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