[ 
https://issues.apache.org/jira/browse/TEZ-4199?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17159594#comment-17159594
 ] 

TezQA commented on TEZ-4199:
----------------------------

| (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 
45s{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 2 new or modified test 
files. {color} |
|| || || || {color:brown} master Compile Tests {color} ||
| {color:green}+1{color} | {color:green} mvninstall {color} | {color:green}  3m 
50s{color} | {color:green} master passed {color} |
| {color:green}+1{color} | {color:green} compile {color} | {color:green}  0m 
25s{color} | {color:green} master passed {color} |
| {color:green}+1{color} | {color:green} checkstyle {color} | {color:green}  0m 
22s{color} | {color:green} master passed {color} |
| {color:green}+1{color} | {color:green} javadoc {color} | {color:green}  0m 
29s{color} | {color:green} master passed {color} |
| {color:blue}0{color} | {color:blue} spotbugs {color} | {color:blue}  0m 
57s{color} | {color:blue} Used deprecated FindBugs config; considering 
switching to SpotBugs. {color} |
| {color:red}-1{color} | {color:red} findbugs {color} | {color:red}  0m 
55s{color} | {color:red} tez-runtime-library in master has 1 extant findbugs 
warnings. {color} |
|| || || || {color:brown} Patch Compile Tests {color} ||
| {color:green}+1{color} | {color:green} mvninstall {color} | {color:green}  0m 
17s{color} | {color:green} the patch passed {color} |
| {color:green}+1{color} | {color:green} compile {color} | {color:green}  0m 
17s{color} | {color:green} the patch passed {color} |
| {color:green}+1{color} | {color:green} javac {color} | {color:green}  0m 
17s{color} | {color:green} the patch passed {color} |
| {color:orange}-0{color} | {color:orange} checkstyle {color} | {color:orange}  
0m 15s{color} | {color:orange} tez-runtime-library: The patch generated 4 new + 
123 unchanged - 4 fixed = 127 total (was 127) {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 
16s{color} | {color:green} the patch passed {color} |
| {color:green}+1{color} | {color:green} findbugs {color} | {color:green}  0m 
50s{color} | {color:green} the patch passed {color} |
|| || || || {color:brown} Other Tests {color} ||
| {color:green}+1{color} | {color:green} unit {color} | {color:green}  4m 
31s{color} | {color:green} tez-runtime-library in the patch passed. {color} |
| {color:green}+1{color} | {color:green} asflicense {color} | {color:green}  0m 
 8s{color} | {color:green} The patch does not generate ASF License warnings. 
{color} |
| {color:black}{color} | {color:black} {color} | {color:black} 14m 10s{color} | 
{color:black} {color} |
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|| Subsystem || Report/Notes ||
| Docker | ClientAPI=1.40 ServerAPI=1.40 base: 
https://builds.apache.org/job/PreCommit-TEZ-Build/484/artifact/out/Dockerfile |
| JIRA Issue | TEZ-4199 |
| JIRA Patch URL | 
https://issues.apache.org/jira/secure/attachment/13007824/TEZ-4199.3.patch |
| Optional Tests | dupname asflicense javac javadoc unit spotbugs findbugs 
checkstyle compile |
| uname | Linux 6832f0fd919d 4.15.0-58-generic #64-Ubuntu SMP Tue Aug 6 
11:12:41 UTC 2019 x86_64 x86_64 x86_64 GNU/Linux |
| Build tool | maven |
| Personality | personality/tez.sh |
| git revision | master / 5944982cd |
| Default Java | Private Build-1.8.0_252-8u252-b09-1~18.04-b09 |
| findbugs | 
https://builds.apache.org/job/PreCommit-TEZ-Build/484/artifact/out/branch-findbugs-tez-runtime-library-warnings.html
 |
| checkstyle | 
https://builds.apache.org/job/PreCommit-TEZ-Build/484/artifact/out/diff-checkstyle-tez-runtime-library.txt
 |
|  Test Results | 
https://builds.apache.org/job/PreCommit-TEZ-Build/484/testReport/ |
| Max. process+thread count | 152 (vs. ulimit of 5500) |
| modules | C: tez-runtime-library U: tez-runtime-library |
| Console output | 
https://builds.apache.org/job/PreCommit-TEZ-Build/484/console |
| versions | git=2.17.1 maven=3.6.0 findbugs=3.0.1 |
| Powered by | Apache Yetus 0.12.0 https://yetus.apache.org |


This message was automatically generated.



> MergeManager::finalMerge should make use of compression 
> --------------------------------------------------------
>
>                 Key: TEZ-4199
>                 URL: https://issues.apache.org/jira/browse/TEZ-4199
>             Project: Apache Tez
>          Issue Type: Improvement
>            Reporter: Rajesh Balamohan
>            Assignee: Mustafa Iman
>            Priority: Major
>         Attachments: Screenshot 2020-07-13 at 2.25.11 PM.png, 
> TEZ-4199.1.patch, TEZ-4199.2.patch, TEZ-4199.2.patch, TEZ-4199.3.patch
>
>          Time Spent: 10m
>  Remaining Estimate: 0h
>
> [https://github.com/apache/tez/blob/master/tez-runtime-library/src/main/java/org/apache/tez/runtime/library/common/shuffle/orderedgrouped/MergeManager.java#L1304]
>  
> Passed on codec is not used in TezMerger.
>  
> !Screenshot 2020-07-13 at 2.25.11 PM.png|width=662,height=490!



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