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Hadoop QA commented on HADOOP-11552: ------------------------------------ | (x) *{color:red}-1 overall{color}* | \\ \\ || 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 1s{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} 6m 45s{color} | {color:green} trunk passed {color} | | {color:green}+1{color} | {color:green} compile {color} | {color:green} 9m 35s{color} | {color:green} trunk passed {color} | | {color:green}+1{color} | {color:green} checkstyle {color} | {color:green} 0m 32s{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 18s{color} | {color:green} trunk passed {color} | | {color:green}+1{color} | {color:green} findbugs {color} | {color:green} 1m 23s{color} | {color:green} trunk passed {color} | | {color:green}+1{color} | {color:green} javadoc {color} | {color:green} 0m 48s{color} | {color:green} trunk passed {color} | | {color:green}+1{color} | {color:green} mvninstall {color} | {color:green} 0m 37s{color} | {color:green} the patch passed {color} | | {color:green}+1{color} | {color:green} compile {color} | {color:green} 9m 10s{color} | {color:green} the patch passed {color} | | {color:green}+1{color} | {color:green} cc {color} | {color:green} 9m 10s{color} | {color:green} the patch passed {color} | | {color:green}+1{color} | {color:green} javac {color} | {color:green} 9m 10s{color} | {color:green} the patch passed {color} | | {color:orange}-0{color} | {color:orange} checkstyle {color} | {color:orange} 0m 34s{color} | {color:orange} hadoop-common-project/hadoop-common: The patch generated 79 new + 276 unchanged - 0 fixed = 355 total (was 276) {color} | | {color:green}+1{color} | {color:green} mvnsite {color} | {color:green} 1m 0s{color} | {color:green} the patch passed {color} | | {color:green}+1{color} | {color:green} mvneclipse {color} | {color:green} 0m 18s{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 34s{color} | {color:red} hadoop-common-project/hadoop-common generated 3 new + 0 unchanged - 0 fixed = 3 total (was 0) {color} | | {color:green}+1{color} | {color:green} javadoc {color} | {color:green} 0m 49s{color} | {color:green} the patch passed {color} | | {color:green}+1{color} | {color:green} unit {color} | {color:green} 8m 22s{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. {color} | | {color:black}{color} | {color:black} {color} | {color:black} 45m 26s{color} | {color:black} {color} | \\ \\ || 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$RpcCall.sendDeferedResponse() At Server.java:[line 941] | | | Invocation of toString on Server$Call.clientId in org.apache.hadoop.ipc.Server$RpcCall.setDeferredError(Throwable) At Server.java:in org.apache.hadoop.ipc.Server$RpcCall.setDeferredError(Throwable) At Server.java:[line 985] | | | Invocation of toString on Server$Call.clientId in org.apache.hadoop.ipc.Server$RpcCall.setDeferredResponse(Writable) At Server.java:in org.apache.hadoop.ipc.Server$RpcCall.setDeferredResponse(Writable) At Server.java:[line 959] | \\ \\ || Subsystem || Report/Notes || | Docker | Image:yetus/hadoop:a9ad5d6 | | JIRA Issue | HADOOP-11552 | | JIRA Patch URL | https://issues.apache.org/jira/secure/attachment/12838809/HADOOP-11552.05.patch | | Optional Tests | asflicense compile javac javadoc mvninstall mvnsite unit findbugs checkstyle cc | | uname | Linux 807b14e2d261 3.13.0-36-lowlatency #63-Ubuntu SMP PREEMPT Wed Sep 3 21:56:12 UTC 2014 x86_64 x86_64 x86_64 GNU/Linux | | Build tool | maven | | Personality | /testptch/hadoop/patchprocess/precommit/personality/provided.sh | | git revision | trunk / 6efb8c9 | | Default Java | 1.8.0_101 | | findbugs | v3.0.0 | | checkstyle | https://builds.apache.org/job/PreCommit-HADOOP-Build/11058/artifact/patchprocess/diff-checkstyle-hadoop-common-project_hadoop-common.txt | | findbugs | https://builds.apache.org/job/PreCommit-HADOOP-Build/11058/artifact/patchprocess/new-findbugs-hadoop-common-project_hadoop-common.html | | Test Results | https://builds.apache.org/job/PreCommit-HADOOP-Build/11058/testReport/ | | modules | C: hadoop-common-project/hadoop-common U: hadoop-common-project/hadoop-common | | Console output | https://builds.apache.org/job/PreCommit-HADOOP-Build/11058/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-11552.1.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. -- This message was sent by Atlassian JIRA (v6.3.4#6332) --------------------------------------------------------------------- To unsubscribe, e-mail: common-issues-unsubscr...@hadoop.apache.org For additional commands, e-mail: common-issues-h...@hadoop.apache.org