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Hadoop QA commented on HDFS-14090: ---------------------------------- | (/) *{color:green}+1 overall{color}* | \\ \\ || Vote || Subsystem || Runtime || Comment || | {color:blue}0{color} | {color:blue} reexec {color} | {color:blue} 0m 13s{color} | {color:blue} Docker mode activated. {color} | || || || || {color:brown} Prechecks {color} || | {color:green}+1{color} | {color:green} @author {color} | {color:green} 0m 0s{color} | {color:green} The patch does not contain any @author tags. {color} | | {color:green}+1{color} | {color:green} test4tests {color} | {color:green} 0m 0s{color} | {color:green} The patch appears to include 2 new or modified test files. {color} | || || || || {color:brown} HDFS-13891 Compile Tests {color} || | {color:green}+1{color} | {color:green} mvninstall {color} | {color:green} 19m 6s{color} | {color:green} HDFS-13891 passed {color} | | {color:green}+1{color} | {color:green} compile {color} | {color:green} 0m 31s{color} | {color:green} HDFS-13891 passed {color} | | {color:green}+1{color} | {color:green} checkstyle {color} | {color:green} 0m 20s{color} | {color:green} HDFS-13891 passed {color} | | {color:green}+1{color} | {color:green} mvnsite {color} | {color:green} 0m 34s{color} | {color:green} HDFS-13891 passed {color} | | {color:green}+1{color} | {color:green} shadedclient {color} | {color:green} 12m 15s{color} | {color:green} branch has no errors when building and testing our client artifacts. {color} | | {color:green}+1{color} | {color:green} findbugs {color} | {color:green} 1m 1s{color} | {color:green} HDFS-13891 passed {color} | | {color:green}+1{color} | {color:green} javadoc {color} | {color:green} 0m 35s{color} | {color:green} HDFS-13891 passed {color} | || || || || {color:brown} Patch Compile Tests {color} || | {color:green}+1{color} | {color:green} mvninstall {color} | {color:green} 0m 30s{color} | {color:green} the patch passed {color} | | {color:green}+1{color} | {color:green} compile {color} | {color:green} 0m 27s{color} | {color:green} the patch passed {color} | | {color:green}+1{color} | {color:green} javac {color} | {color:green} 0m 27s{color} | {color:green} the patch passed {color} | | {color:orange}-0{color} | {color:orange} checkstyle {color} | {color:orange} 0m 15s{color} | {color:orange} hadoop-hdfs-project/hadoop-hdfs-rbf: The patch generated 1 new + 0 unchanged - 0 fixed = 1 total (was 0) {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} whitespace {color} | {color:green} 0m 0s{color} | {color:green} The patch has no whitespace issues. {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} 12m 48s{color} | {color:green} patch has no errors when building and testing our client artifacts. {color} | | {color:green}+1{color} | {color:green} findbugs {color} | {color:green} 1m 4s{color} | {color:green} the patch passed {color} | | {color:green}+1{color} | {color:green} javadoc {color} | {color:green} 0m 32s{color} | {color:green} the patch passed {color} | || || || || {color:brown} Other Tests {color} || | {color:green}+1{color} | {color:green} unit {color} | {color:green} 22m 8s{color} | {color:green} hadoop-hdfs-rbf in the patch passed. {color} | | {color:green}+1{color} | {color:green} asflicense {color} | {color:green} 0m 26s{color} | {color:green} The patch does not generate ASF License warnings. {color} | | {color:black}{color} | {color:black} {color} | {color:black} 74m 5s{color} | {color:black} {color} | \\ \\ || Subsystem || Report/Notes || | Docker | Client=17.05.0-ce Server=17.05.0-ce Image:yetus/hadoop:bdbca0e | | JIRA Issue | HDFS-14090 | | JIRA Patch URL | https://issues.apache.org/jira/secure/attachment/12971371/HDFS-14090-HDFS-13891.003.patch | | Optional Tests | dupname asflicense compile javac javadoc mvninstall mvnsite unit shadedclient findbugs checkstyle xml | | uname | Linux 02361cad0f61 4.4.0-143-generic #169~14.04.2-Ubuntu SMP Wed Feb 13 15:00:41 UTC 2019 x86_64 x86_64 x86_64 GNU/Linux | | Build tool | maven | | Personality | /testptch/patchprocess/precommit/personality/provided.sh | | git revision | HDFS-13891 / bee9fff | | maven | version: Apache Maven 3.3.9 | | Default Java | 1.8.0_212 | | findbugs | v3.1.0-RC1 | | checkstyle | https://builds.apache.org/job/PreCommit-HDFS-Build/26932/artifact/out/diff-checkstyle-hadoop-hdfs-project_hadoop-hdfs-rbf.txt | | Test Results | https://builds.apache.org/job/PreCommit-HDFS-Build/26932/testReport/ | | Max. process+thread count | 1041 (vs. ulimit of 10000) | | modules | C: hadoop-hdfs-project/hadoop-hdfs-rbf U: hadoop-hdfs-project/hadoop-hdfs-rbf | | Console output | https://builds.apache.org/job/PreCommit-HDFS-Build/26932/console | | Powered by | Apache Yetus 0.8.0 http://yetus.apache.org | This message was automatically generated. > RBF: Improved isolation for downstream name nodes. > -------------------------------------------------- > > Key: HDFS-14090 > URL: https://issues.apache.org/jira/browse/HDFS-14090 > Project: Hadoop HDFS > Issue Type: Sub-task > Reporter: CR Hota > Assignee: CR Hota > Priority: Major > Attachments: HDFS-14090-HDFS-13891.001.patch, > HDFS-14090-HDFS-13891.002.patch, HDFS-14090-HDFS-13891.003.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. > -- This message was sent by Atlassian JIRA (v7.6.3#76005) --------------------------------------------------------------------- To unsubscribe, e-mail: hdfs-issues-unsubscr...@hadoop.apache.org For additional commands, e-mail: hdfs-issues-h...@hadoop.apache.org