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https://issues.apache.org/jira/browse/MAPREDUCE-6685?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15258766#comment-15258766
]
Hadoop QA commented on MAPREDUCE-6685:
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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 13s
{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} 6m
51s {color} | {color:green} trunk passed {color} |
| {color:green}+1{color} | {color:green} compile {color} | {color:green} 0m 16s
{color} | {color:green} trunk passed with JDK v1.8.0_92 {color} |
| {color:green}+1{color} | {color:green} compile {color} | {color:green} 0m 21s
{color} | {color:green} trunk passed with JDK v1.7.0_95 {color} |
| {color:green}+1{color} | {color:green} checkstyle {color} | {color:green} 0m
14s {color} | {color:green} trunk passed {color} |
| {color:green}+1{color} | {color:green} mvnsite {color} | {color:green} 0m 24s
{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} findbugs {color} | {color:green} 0m
48s {color} | {color:green} trunk passed {color} |
| {color:green}+1{color} | {color:green} javadoc {color} | {color:green} 0m 20s
{color} | {color:green} trunk passed with JDK v1.8.0_92 {color} |
| {color:green}+1{color} | {color:green} javadoc {color} | {color:green} 0m 26s
{color} | {color:green} trunk passed with JDK v1.7.0_95 {color} |
| {color:green}+1{color} | {color:green} mvninstall {color} | {color:green} 0m
20s {color} | {color:green} the patch passed {color} |
| {color:green}+1{color} | {color:green} compile {color} | {color:green} 0m 14s
{color} | {color:green} the patch passed with JDK v1.8.0_92 {color} |
| {color:green}+1{color} | {color:green} javac {color} | {color:green} 0m 14s
{color} | {color:green} the patch passed {color} |
| {color:green}+1{color} | {color:green} compile {color} | {color:green} 0m 18s
{color} | {color:green} the patch passed with JDK v1.7.0_95 {color} |
| {color:green}+1{color} | {color:green} javac {color} | {color:green} 0m 18s
{color} | {color:green} the patch passed {color} |
| {color:green}+1{color} | {color:green} checkstyle {color} | {color:green} 0m
12s {color} | {color:green} the patch passed {color} |
| {color:green}+1{color} | {color:green} mvnsite {color} | {color:green} 0m 22s
{color} | {color:green} the patch passed {color} |
| {color:green}+1{color} | {color:green} mvneclipse {color} | {color:green} 0m
10s {color} | {color:green} the patch passed {color} |
| {color:green}+1{color} | {color:green} whitespace {color} | {color:green} 0m
0s {color} | {color:green} Patch has no whitespace issues. {color} |
| {color:red}-1{color} | {color:red} findbugs {color} | {color:red} 1m 0s
{color} | {color:red}
hadoop-mapreduce-project/hadoop-mapreduce-client/hadoop-mapreduce-client-common
generated 1 new + 0 unchanged - 0 fixed = 1 total (was 0) {color} |
| {color:green}+1{color} | {color:green} javadoc {color} | {color:green} 0m 21s
{color} | {color:green} the patch passed with JDK v1.8.0_92 {color} |
| {color:green}+1{color} | {color:green} javadoc {color} | {color:green} 0m 24s
{color} | {color:green} the patch passed with JDK v1.7.0_95 {color} |
| {color:green}+1{color} | {color:green} unit {color} | {color:green} 0m 39s
{color} | {color:green} hadoop-mapreduce-client-common in the patch passed with
JDK v1.8.0_92. {color} |
| {color:green}+1{color} | {color:green} unit {color} | {color:green} 0m 46s
{color} | {color:green} hadoop-mapreduce-client-common in the patch passed with
JDK v1.7.0_95. {color} |
| {color:green}+1{color} | {color:green} asflicense {color} | {color:green} 0m
20s {color} | {color:green} Patch does not generate ASF License warnings.
{color} |
| {color:black}{color} | {color:black} {color} | {color:black} 16m 6s {color} |
{color:black} {color} |
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|| Reason || Tests ||
| FindBugs |
module:hadoop-mapreduce-project/hadoop-mapreduce-client/hadoop-mapreduce-client-common
|
| | Boxing/unboxing to parse a primitive
org.apache.hadoop.mapred.LocalDistributedCacheManager.setup(JobConf) At
LocalDistributedCacheManager.java:org.apache.hadoop.mapred.LocalDistributedCacheManager.setup(JobConf)
At LocalDistributedCacheManager.java:[line 99] |
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|| Subsystem || Report/Notes ||
| Docker | Image:yetus/hadoop:fbe3e86 |
| JIRA Patch URL |
https://issues.apache.org/jira/secure/attachment/12800848/MAPREDUCE-6685.001.patch
|
| JIRA Issue | MAPREDUCE-6685 |
| Optional Tests | asflicense compile javac javadoc mvninstall mvnsite
unit findbugs checkstyle |
| uname | Linux 38fe210a77cc 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 / c6a2430 |
| Default Java | 1.7.0_95 |
| Multi-JDK versions | /usr/lib/jvm/java-8-oracle:1.8.0_92
/usr/lib/jvm/java-7-openjdk-amd64:1.7.0_95 |
| findbugs | v3.0.0 |
| findbugs |
https://builds.apache.org/job/PreCommit-MAPREDUCE-Build/6458/artifact/patchprocess/new-findbugs-hadoop-mapreduce-project_hadoop-mapreduce-client_hadoop-mapreduce-client-common.html
|
| JDK v1.7.0_95 Test Results |
https://builds.apache.org/job/PreCommit-MAPREDUCE-Build/6458/testReport/ |
| 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/6458/console |
| Powered by | Apache Yetus 0.2.0 http://yetus.apache.org |
This message was automatically generated.
> LocalDistributedCacheManager can have overlapping filenames
> -----------------------------------------------------------
>
> Key: MAPREDUCE-6685
> URL: https://issues.apache.org/jira/browse/MAPREDUCE-6685
> Project: Hadoop Map/Reduce
> Issue Type: Bug
> Affects Versions: 3.0.0
> Reporter: Ray Chiang
> Assignee: Ray Chiang
> Attachments: MAPREDUCE-6685.001.patch
>
>
> LocalDistributedCacheManager has this setup:
> bq. AtomicLong uniqueNumberGenerator = new
> AtomicLong(System.currentTimeMillis());
> to create this temporary filename:
> bq. new FSDownload(localFSFileContext, ugi, conf, new Path(destPath,
> Long.toString(uniqueNumberGenerator.incrementAndGet())), resource);
> when using LocalJobRunner. When two or more start on the same machine, then
> it's possible to end up having the same timestamp or a large enough overlap
> that two successive timestamps may not be sufficiently far apart.
> Given the assumptions:
> 1) Assume timestamp is the same. Then the most common starting random seed
> will be the same.
> 2) Process ID will very likely be unique, but will likely be close in value.
> 3) Thread ID is not guaranteed to be unique.
> A unique ID based on PID as a seed (in addition to the timestamp) should be a
> better unique identifier for temporary filenames.
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