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https://issues.apache.org/jira/browse/TEZ-4192?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17123381#comment-17123381
 ] 

TezQA commented on TEZ-4192:
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| (/) *{color:green}+1 overall{color}* |
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|| Vote || Subsystem || Runtime || Comment ||
| {color:blue}0{color} | {color:blue} reexec {color} | {color:blue} 19m 
42s{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. {color} |
| {color:green}+1{color} | {color:green} test4tests {color} | {color:green}  0m 
 0s{color} | {color:green} The patch appears to include 9 new or modified test 
files. {color} |
|| || || || {color:brown} master Compile Tests {color} ||
| {color:blue}0{color} | {color:blue} mvndep {color} | {color:blue}  0m 
19s{color} | {color:blue} Maven dependency ordering for branch {color} |
| {color:green}+1{color} | {color:green} mvninstall {color} | {color:green}  4m 
47s{color} | {color:green} master passed {color} |
| {color:green}+1{color} | {color:green} compile {color} | {color:green}  1m 
12s{color} | {color:green} master passed {color} |
| {color:green}+1{color} | {color:green} checkstyle {color} | {color:green}  1m 
 7s{color} | {color:green} master passed {color} |
| {color:green}+1{color} | {color:green} javadoc {color} | {color:green}  1m 
19s{color} | {color:green} master passed {color} |
| {color:blue}0{color} | {color:blue} spotbugs {color} | {color:blue}  0m 
35s{color} | {color:blue} Used deprecated FindBugs config; considering 
switching to SpotBugs. {color} |
| {color:green}+1{color} | {color:green} findbugs {color} | {color:green}  2m 
38s{color} | {color:green} master passed {color} |
|| || || || {color:brown} Patch Compile Tests {color} ||
| {color:blue}0{color} | {color:blue} mvndep {color} | {color:blue}  0m  
8s{color} | {color:blue} Maven dependency ordering for patch {color} |
| {color:green}+1{color} | {color:green} mvninstall {color} | {color:green}  0m 
50s{color} | {color:green} the patch passed {color} |
| {color:green}+1{color} | {color:green} compile {color} | {color:green}  0m 
49s{color} | {color:green} the patch passed {color} |
| {color:green}+1{color} | {color:green} javac {color} | {color:green}  0m 
49s{color} | {color:green} the patch passed {color} |
| {color:orange}-0{color} | {color:orange} checkstyle {color} | {color:orange}  
0m 22s{color} | {color:orange} tez-dag: The patch generated 12 new + 298 
unchanged - 5 fixed = 310 total (was 303) {color} |
| {color:orange}-0{color} | {color:orange} checkstyle {color} | {color:orange}  
0m  8s{color} | {color:orange} tez-ext-service-tests: The patch generated 3 new 
+ 11 unchanged - 0 fixed = 14 total (was 11) {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} javadoc {color} | {color:green}  0m 
55s{color} | {color:green} the patch passed {color} |
| {color:green}+1{color} | {color:green} findbugs {color} | {color:green}  2m 
37s{color} | {color:green} the patch passed {color} |
|| || || || {color:brown} Other Tests {color} ||
| {color:green}+1{color} | {color:green} unit {color} | {color:green}  1m 
43s{color} | {color:green} tez-api in the patch passed. {color} |
| {color:green}+1{color} | {color:green} unit {color} | {color:green}  3m 
58s{color} | {color:green} tez-dag in the patch passed. {color} |
| {color:green}+1{color} | {color:green} unit {color} | {color:green}  3m 
43s{color} | {color:green} tez-ext-service-tests in the patch passed. {color} |
| {color:green}+1{color} | {color:green} asflicense {color} | {color:green}  0m 
21s{color} | {color:green} The patch does not generate ASF License warnings. 
{color} |
| {color:black}{color} | {color:black} {color} | {color:black} 48m  8s{color} | 
{color:black} {color} |
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|| Subsystem || Report/Notes ||
| Docker | Client=19.03.11 Server=19.03.11 base: 
https://builds.apache.org/job/PreCommit-TEZ-Build/459/artifact/out/Dockerfile |
| JIRA Issue | TEZ-4192 |
| JIRA Patch URL | 
https://issues.apache.org/jira/secure/attachment/13004554/TEZ-4192.2.patch |
| Optional Tests | dupname asflicense javac javadoc unit spotbugs findbugs 
checkstyle compile |
| uname | Linux 15bcfb16f908 4.15.0-101-generic #102-Ubuntu SMP Mon May 11 
10:07:26 UTC 2020 x86_64 x86_64 x86_64 GNU/Linux |
| Build tool | maven |
| Personality | personality/tez.sh |
| git revision | master / 28cf7dc |
| Default Java | 1.8.0_252 |
| checkstyle | 
https://builds.apache.org/job/PreCommit-TEZ-Build/459/artifact/out/diff-checkstyle-tez-dag.txt
 |
| checkstyle | 
https://builds.apache.org/job/PreCommit-TEZ-Build/459/artifact/out/diff-checkstyle-tez-ext-service-tests.txt
 |
|  Test Results | 
https://builds.apache.org/job/PreCommit-TEZ-Build/459/testReport/ |
| Max. process+thread count | 830 (vs. ulimit of 5500) |
| modules | C: tez-api tez-dag tez-ext-service-tests U: . |
| Console output | 
https://builds.apache.org/job/PreCommit-TEZ-Build/459/console |
| versions | git=2.7.4 maven=3.3.9 findbugs=3.0.1 |
| Powered by | Apache Yetus 0.11.1 https://yetus.apache.org |


This message was automatically generated.



> Attach task specific info in scheduler and retrieve in communicator
> -------------------------------------------------------------------
>
>                 Key: TEZ-4192
>                 URL: https://issues.apache.org/jira/browse/TEZ-4192
>             Project: Apache Tez
>          Issue Type: Improvement
>    Affects Versions: 0.9.2
>            Reporter: Mustafa Iman
>            Assignee: Mustafa Iman
>            Priority: Major
>         Attachments: TEZ-4192.1.patch, TEZ-4192.2.patch
>
>          Time Spent: 10m
>  Remaining Estimate: 0h
>
> There is no way to pass information from scheduler to communicator. Sometimes 
> we want to let communicator know about extra properties of the task other 
> than its spec. One example is if a task is preemptable.
> When scheduler receives a task, its taskspec is already constructed. It is a 
> nice immutable object at this point. We do not want to modify and put more 
> info in it at that stage. So we pass a new piece of information to 
> TaskSchedulerContext#taskAllocated along with the allocation. This info is 
> passed to the communicator untouched. It is up to the communicator 
> implementation to make use of it. Communicator implementation needs to 
> override a new registerRunningTaskAttempt that accepts this additional object 
> along with all the other arguments in the original registerRunningTaskAttempt 
> method.
> The new registerRunningTaskAttempt method has a default implementation that 
> falls back to the old method. So if the user does not override the new 
> method, the same old behavior is preserved. Similarly on scheduler side, the 
> user needs to call new taskAllocated method to pass the additional info 
> object. If they use the old taskAllocated method, old behavior is preserved.
>  



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