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https://issues.apache.org/jira/browse/HADOOP-11552?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15671402#comment-15671402
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Hadoop QA commented on HADOOP-11552:
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| (x) *{color:red}-1 overall{color}* |
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|| Vote || Subsystem || Runtime || Comment ||
| {color:blue}0{color} | {color:blue} reexec {color} | {color:blue} 0m
15s{color} | {color:blue} Docker mode activated. {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 4 new or modified test
files. {color} |
| {color:green}+1{color} | {color:green} mvninstall {color} | {color:green} 8m
7s{color} | {color:green} trunk passed {color} |
| {color:green}+1{color} | {color:green} compile {color} | {color:green} 10m
0s{color} | {color:green} trunk passed {color} |
| {color:green}+1{color} | {color:green} checkstyle {color} | {color:green} 0m
31s{color} | {color:green} trunk passed {color} |
| {color:green}+1{color} | {color:green} mvnsite {color} | {color:green} 1m
2s{color} | {color:green} trunk passed {color} |
| {color:green}+1{color} | {color:green} mvneclipse {color} | {color:green} 0m
19s{color} | {color:green} trunk passed {color} |
| {color:green}+1{color} | {color:green} findbugs {color} | {color:green} 1m
25s{color} | {color:green} trunk passed {color} |
| {color:green}+1{color} | {color:green} javadoc {color} | {color:green} 0m
45s{color} | {color:green} trunk passed {color} |
| {color:green}+1{color} | {color:green} mvninstall {color} | {color:green} 0m
36s{color} | {color:green} the patch passed {color} |
| {color:green}+1{color} | {color:green} compile {color} | {color:green} 9m
6s{color} | {color:green} the patch passed {color} |
| {color:green}+1{color} | {color:green} cc {color} | {color:green} 9m
6s{color} | {color:green} the patch passed {color} |
| {color:green}+1{color} | {color:green} javac {color} | {color:green} 9m
6s{color} | {color:green} the patch passed {color} |
| {color:orange}-0{color} | {color:orange} checkstyle {color} | {color:orange}
0m 32s{color} | {color:orange} hadoop-common-project/hadoop-common: The patch
generated 38 new + 275 unchanged - 1 fixed = 313 total (was 276) {color} |
| {color:green}+1{color} | {color:green} mvnsite {color} | {color:green} 1m
5s{color} | {color:green} the patch passed {color} |
| {color:green}+1{color} | {color:green} mvneclipse {color} | {color:green} 0m
19s{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:red}-1{color} | {color:red} findbugs {color} | {color:red} 1m
53s{color} | {color:red} hadoop-common-project/hadoop-common generated 1 new +
0 unchanged - 0 fixed = 1 total (was 0) {color} |
| {color:green}+1{color} | {color:green} javadoc {color} | {color:green} 0m
45s{color} | {color:green} the patch passed {color} |
| {color:green}+1{color} | {color:green} unit {color} | {color:green} 7m
41s{color} | {color:green} hadoop-common in the patch passed. {color} |
| {color:green}+1{color} | {color:green} asflicense {color} | {color:green} 0m
32s{color} | {color:green} The patch does not generate ASF License warnings.
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| {color:black}{color} | {color:black} {color} | {color:black} 46m 40s{color} |
{color:black} {color} |
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|| Reason || Tests ||
| FindBugs | module:hadoop-common-project/hadoop-common |
| | Invocation of toString on Server$Call.clientId in
org.apache.hadoop.ipc.Server$RpcCall.sendDeferedResponse() At Server.java:in
org.apache.hadoop.ipc.Server$RpcCall.sendDeferedResponse() At
Server.java:[line 945] |
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|| Subsystem || Report/Notes ||
| Docker | Image:yetus/hadoop:a9ad5d6 |
| JIRA Issue | HADOOP-11552 |
| JIRA Patch URL |
https://issues.apache.org/jira/secure/attachment/12839098/HADOOP-11552.06.patch
|
| Optional Tests | asflicense compile javac javadoc mvninstall mvnsite
unit findbugs checkstyle cc |
| uname | Linux 45e626f7a172 3.13.0-95-generic #142-Ubuntu SMP Fri Aug 12
17:00:09 UTC 2016 x86_64 x86_64 x86_64 GNU/Linux |
| Build tool | maven |
| Personality | /testptch/hadoop/patchprocess/precommit/personality/provided.sh
|
| git revision | trunk / 7ef290c |
| Default Java | 1.8.0_111 |
| findbugs | v3.0.0 |
| checkstyle |
https://builds.apache.org/job/PreCommit-HADOOP-Build/11079/artifact/patchprocess/diff-checkstyle-hadoop-common-project_hadoop-common.txt
|
| findbugs |
https://builds.apache.org/job/PreCommit-HADOOP-Build/11079/artifact/patchprocess/new-findbugs-hadoop-common-project_hadoop-common.html
|
| Test Results |
https://builds.apache.org/job/PreCommit-HADOOP-Build/11079/testReport/ |
| modules | C: hadoop-common-project/hadoop-common U:
hadoop-common-project/hadoop-common |
| Console output |
https://builds.apache.org/job/PreCommit-HADOOP-Build/11079/console |
| Powered by | Apache Yetus 0.4.0-SNAPSHOT http://yetus.apache.org |
This message was automatically generated.
> Allow handoff on the server side for RPC requests
> -------------------------------------------------
>
> Key: HADOOP-11552
> URL: https://issues.apache.org/jira/browse/HADOOP-11552
> Project: Hadoop Common
> Issue Type: Improvement
> Components: ipc
> Reporter: Siddharth Seth
> Assignee: Siddharth Seth
> Labels: BB2015-05-TBR
> Attachments: HADOOP-11552.05.patch, HADOOP-11552.06.patch,
> HADOOP-11552.1.wip.txt, HADOOP-11552.2.txt, HADOOP-11552.3.txt,
> HADOOP-11552.3.txt, HADOOP-11552.4.txt
>
>
> An RPC server handler thread is tied up for each incoming RPC request. This
> isn't ideal, since this essentially implies that RPC operations should be
> short lived, and most operations which could take time end up falling back to
> a polling mechanism.
> Some use cases where this is useful.
> - YARN submitApplication - which currently submits, followed by a poll to
> check if the application is accepted while the submit operation is written
> out to storage. This can be collapsed into a single call.
> - YARN allocate - requests and allocations use the same protocol. New
> allocations are received via polling.
> The allocate protocol could be split into a request/heartbeat along with a
> 'awaitResponse'. The request/heartbeat is sent only when there's a request or
> on a much longer heartbeat interval. awaitResponse is always left active with
> the RM - and returns the moment something is available.
> MapReduce/Tez task to AM communication is another example of this pattern.
> The same pattern of splitting calls can be used for other protocols as well.
> This should serve to improve latency, as well as reduce network traffic since
> the keep-alive heartbeat can be sent less frequently.
> I believe there's some cases in HDFS as well, where the DN gets told to
> perform some operations when they heartbeat into the NN.
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