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https://issues.apache.org/jira/browse/MAPREDUCE-7183?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16898581#comment-16898581
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Hadoop QA commented on MAPREDUCE-7183:
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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 
48s{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 1 new or modified test 
files. {color} |
|| || || || {color:brown} trunk Compile Tests {color} ||
| {color:green}+1{color} | {color:green} mvninstall {color} | {color:green} 28m 
26s{color} | {color:green} trunk passed {color} |
| {color:green}+1{color} | {color:green} compile {color} | {color:green}  0m 
35s{color} | {color:green} trunk passed {color} |
| {color:green}+1{color} | {color:green} checkstyle {color} | {color:green}  0m 
25s{color} | {color:green} trunk passed {color} |
| {color:green}+1{color} | {color:green} mvnsite {color} | {color:green}  0m 
36s{color} | {color:green} trunk passed {color} |
| {color:green}+1{color} | {color:green} shadedclient {color} | {color:green} 
13m 54s{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  
2s{color} | {color:green} trunk passed {color} |
| {color:green}+1{color} | {color:green} javadoc {color} | {color:green}  0m 
30s{color} | {color:green} trunk 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 
31s{color} | {color:green} the patch passed {color} |
| {color:green}+1{color} | {color:green} javac {color} | {color:green}  0m 
31s{color} | {color:green} the patch passed {color} |
| {color:orange}-0{color} | {color:orange} checkstyle {color} | {color:orange}  
0m 17s{color} | {color:orange} 
hadoop-mapreduce-project/hadoop-mapreduce-client/hadoop-mapreduce-client-common:
 The patch generated 3 new + 46 unchanged - 1 fixed = 49 total (was 47) {color} 
|
| {color:green}+1{color} | {color:green} mvnsite {color} | {color:green}  0m 
34s{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} shadedclient {color} | {color:green} 
14m 54s{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  
6s{color} | {color:green} the patch passed {color} |
| {color:green}+1{color} | {color:green} javadoc {color} | {color:green}  0m 
23s{color} | {color:green} the patch passed {color} |
|| || || || {color:brown} Other Tests {color} ||
| {color:red}-1{color} | {color:red} unit {color} | {color:red}  1m  5s{color} 
| {color:red} hadoop-mapreduce-client-common in the patch failed. {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} 66m 25s{color} | 
{color:black} {color} |
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|| Reason || Tests ||
| Failed junit tests | hadoop.mapreduce.v2.jobhistory.TestJobHistoryUtils |
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|| Subsystem || Report/Notes ||
| Docker | Client=19.03.1 Server=19.03.1 Image:yetus/hadoop:bdbca0e53b4 |
| JIRA Issue | MAPREDUCE-7183 |
| JIRA Patch URL | 
https://issues.apache.org/jira/secure/attachment/12957838/MAPREDUCE-7183.patch |
| Optional Tests |  dupname  asflicense  compile  javac  javadoc  mvninstall  
mvnsite  unit  shadedclient  findbugs  checkstyle  |
| uname | Linux 51a6eddf7184 4.15.0-54-generic #58-Ubuntu SMP Mon Jun 24 
10:55:24 UTC 2019 x86_64 x86_64 x86_64 GNU/Linux |
| Build tool | maven |
| Personality | /testptch/patchprocess/precommit/personality/provided.sh |
| git revision | trunk / e872ceb |
| maven | version: Apache Maven 3.3.9 |
| Default Java | 1.8.0_222 |
| findbugs | v3.1.0-RC1 |
| checkstyle | 
https://builds.apache.org/job/PreCommit-MAPREDUCE-Build/7643/artifact/out/diff-checkstyle-hadoop-mapreduce-project_hadoop-mapreduce-client_hadoop-mapreduce-client-common.txt
 |
| unit | 
https://builds.apache.org/job/PreCommit-MAPREDUCE-Build/7643/artifact/out/patch-unit-hadoop-mapreduce-project_hadoop-mapreduce-client_hadoop-mapreduce-client-common.txt
 |
|  Test Results | 
https://builds.apache.org/job/PreCommit-MAPREDUCE-Build/7643/testReport/ |
| Max. process+thread count | 307 (vs. ulimit of 5500) |
| modules | C: 
hadoop-mapreduce-project/hadoop-mapreduce-client/hadoop-mapreduce-client-common 
U: 
hadoop-mapreduce-project/hadoop-mapreduce-client/hadoop-mapreduce-client-common 
|
| Console output | 
https://builds.apache.org/job/PreCommit-MAPREDUCE-Build/7643/console |
| Powered by | Apache Yetus 0.8.0   http://yetus.apache.org |


This message was automatically generated.



> Make app master recover history from latest history file that exists
> --------------------------------------------------------------------
>
>                 Key: MAPREDUCE-7183
>                 URL: https://issues.apache.org/jira/browse/MAPREDUCE-7183
>             Project: Hadoop Map/Reduce
>          Issue Type: Bug
>          Components: applicationmaster
>            Reporter: Mikayla Konst
>            Assignee: Mikayla Konst
>            Priority: Major
>         Attachments: MAPREDUCE-7183.patch
>
>
> When running a mapreduce job, when the original app master is killed, the new 
> app master normally attempts to recover by reading the jhist file that was 
> written by the app master from the previous app attempt (e.g. current app 
> attempt - 1).
> This is usually fine, but is a problem in the following situation:
>  # App master 1 writes history to jobid_1.jhist, then is killed
>  # App master 2 starts up but is killed before it has the chance to write any 
> history to jobid_2.jhist
>  # App master 3 attempts to recover, but it can't find jobid_2.jhist, so all 
> job progress is lost.
> This problem manifests as "Unable to parse prior job history, aborting 
> recovery" and "Could not parse the old history file. Will not have old 
> AMinfos" errors, all job progress being lost, and previous app attempts not 
> showing up in the job history UI.
> To fix this problem, if jobid_2.jhist is missing, app master 3 should just 
> recover using the history in jobid_1.jhist.
> Related JIRAs that mention this same problem:
> https://issues.apache.org/jira/browse/MAPREDUCE-4729
> https://issues.apache.org/jira/browse/MAPREDUCE-4767 



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