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From "Hadoop QA (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (MAPREDUCE-6459) native task crashes when merging spilled file on ppc64
Date Mon, 15 May 2017 08:18:04 GMT

    [ https://issues.apache.org/jira/browse/MAPREDUCE-6459?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16010140#comment-16010140
] 

Hadoop QA commented on MAPREDUCE-6459:
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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 32s {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:red}-1{color} | {color:red} test4tests {color} | {color:red} 0m 0s {color} | {color:red}
The patch doesn't appear to include any new or modified tests. Please justify why no new tests
are needed for this patch. Also please list what manual steps were performed to verify this
patch. {color} |
| {color:green}+1{color} | {color:green} mvninstall {color} | {color:green} 12m 54s {color}
| {color:green} trunk passed {color} |
| {color:green}+1{color} | {color:green} compile {color} | {color:green} 0m 37s {color} |
{color:green} trunk passed {color} |
| {color:green}+1{color} | {color:green} mvnsite {color} | {color:green} 0m 15s {color} |
{color:green} trunk passed {color} |
| {color:green}+1{color} | {color:green} mvneclipse {color} | {color:green} 0m 13s {color}
| {color:green} trunk passed {color} |
| {color:green}+1{color} | {color:green} mvninstall {color} | {color:green} 0m 13s {color}
| {color:green} the patch passed {color} |
| {color:green}+1{color} | {color:green} compile {color} | {color:green} 0m 36s {color} |
{color:green} the patch passed {color} |
| {color:green}+1{color} | {color:green} cc {color} | {color:green} 0m 36s {color} | {color:green}
the patch passed {color} |
| {color:green}+1{color} | {color:green} javac {color} | {color:green} 0m 36s {color} | {color:green}
the patch passed {color} |
| {color:green}+1{color} | {color:green} mvnsite {color} | {color:green} 0m 14s {color} |
{color:green} the patch passed {color} |
| {color:green}+1{color} | {color:green} mvneclipse {color} | {color:green} 0m 11s {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} unit {color} | {color:green} 1m 52s {color} | {color:green}
hadoop-mapreduce-client-nativetask in the patch passed. {color} |
| {color:green}+1{color} | {color:green} asflicense {color} | {color:green} 0m 16s {color}
| {color:green} The patch does not generate ASF License warnings. {color} |
| {color:black}{color} | {color:black} {color} | {color:black} 18m 8s {color} | {color:black}
{color} |
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|| Subsystem || Report/Notes ||
| Docker |  Image:yetus/hadoop:14b5c93 |
| JIRA Patch URL | https://issues.apache.org/jira/secure/attachment/12868020/MAPREDUCE-6459.002.patch
|
| JIRA Issue | MAPREDUCE-6459 |
| Optional Tests |  asflicense  compile  cc  mvnsite  javac  unit  |
| uname | Linux bd2d77e70502 4.4.0-43-generic #63-Ubuntu SMP Wed Oct 12 13:48:03 UTC 2016
x86_64 x86_64 x86_64 GNU/Linux |
| Build tool | maven |
| Personality | /testptch/hadoop/patchprocess/precommit/personality/provided.sh |
| git revision | trunk / 6600abb |
| Default Java | 1.8.0_121 |
|  Test Results | https://builds.apache.org/job/PreCommit-MAPREDUCE-Build/6980/testReport/
|
| modules | C: hadoop-mapreduce-project/hadoop-mapreduce-client/hadoop-mapreduce-client-nativetask
U: hadoop-mapreduce-project/hadoop-mapreduce-client/hadoop-mapreduce-client-nativetask |
| Console output | https://builds.apache.org/job/PreCommit-MAPREDUCE-Build/6980/console |
| Powered by | Apache Yetus 0.3.0   http://yetus.apache.org |


This message was automatically generated.



> native task crashes when merging spilled file on ppc64
> ------------------------------------------------------
>
>                 Key: MAPREDUCE-6459
>                 URL: https://issues.apache.org/jira/browse/MAPREDUCE-6459
>             Project: Hadoop Map/Reduce
>          Issue Type: Bug
>    Affects Versions: 2.6.0
>         Environment: Linux version 2.6.32-431.el6.ppc64
>            Reporter: Tao Jie
>            Assignee: Tao Jie
>         Attachments: MAPREDUCE-6459.001.patch, MAPREDUCE-6459.002.patch, ppc64_error.txt
>
>
> when running native task on ppc64´╝îmerging spilled files fails since we could not deserialize
local spill file correctly.
> Function readVLong in WritableUtils.h and Buffers.h, we try to compare a char with a
number and convert a char to int64_t. It does not work correctly on ppc64 since char definition
is different between ppc64 and x86 platform. On x86 platform char is defined as signed number
while on ppc64 char is unsigned. As a result, we write EOF marker [-1, -1] at the end of spill
partition, but deserialize chars as [255, 255].



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