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https://issues.apache.org/jira/browse/HADOOP-15361?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16433788#comment-16433788
 ] 

genericqa commented on HADOOP-15361:
------------------------------------

| (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 
17s{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 4 new or modified test 
files. {color} |
|| || || || {color:brown} trunk Compile Tests {color} ||
| {color:green}+1{color} | {color:green} mvninstall {color} | {color:green} 27m 
34s{color} | {color:green} trunk passed {color} |
| {color:green}+1{color} | {color:green} compile {color} | {color:green} 27m 
28s{color} | {color:green} trunk passed {color} |
| {color:green}+1{color} | {color:green} checkstyle {color} | {color:green}  0m 
50s{color} | {color:green} trunk passed {color} |
| {color:green}+1{color} | {color:green} mvnsite {color} | {color:green}  1m  
9s{color} | {color:green} trunk passed {color} |
| {color:green}+1{color} | {color:green} shadedclient {color} | {color:green} 
12m 13s{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 
29s{color} | {color:green} trunk passed {color} |
| {color:green}+1{color} | {color:green} javadoc {color} | {color:green}  0m 
56s{color} | {color:green} trunk passed {color} |
|| || || || {color:brown} Patch Compile Tests {color} ||
| {color:green}+1{color} | {color:green} mvninstall {color} | {color:green}  0m 
45s{color} | {color:green} the patch passed {color} |
| {color:green}+1{color} | {color:green} compile {color} | {color:green} 26m 
22s{color} | {color:green} the patch passed {color} |
| {color:green}+1{color} | {color:green} javac {color} | {color:green} 26m 
22s{color} | {color:green} the patch passed {color} |
| {color:green}+1{color} | {color:green} checkstyle {color} | {color:green}  0m 
50s{color} | {color:green} hadoop-common-project/hadoop-common: The patch 
generated 0 new + 68 unchanged - 2 fixed = 68 total (was 70) {color} |
| {color:green}+1{color} | {color:green} mvnsite {color} | {color:green}  1m  
6s{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} 
10m  9s{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 
38s{color} | {color:green} the patch passed {color} |
| {color:green}+1{color} | {color:green} javadoc {color} | {color:green}  0m 
56s{color} | {color:green} the patch passed {color} |
|| || || || {color:brown} Other Tests {color} ||
| {color:red}-1{color} | {color:red} unit {color} | {color:red}  7m 46s{color} 
| {color:red} hadoop-common in the patch failed. {color} |
| {color:green}+1{color} | {color:green} asflicense {color} | {color:green}  0m 
37s{color} | {color:green} The patch does not generate ASF License warnings. 
{color} |
| {color:black}{color} | {color:black} {color} | {color:black}121m 46s{color} | 
{color:black} {color} |
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|| Reason || Tests ||
| Failed junit tests | hadoop.fs.viewfs.TestViewFsTrash |
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|| Subsystem || Report/Notes ||
| Docker | Client=17.05.0-ce Server=17.05.0-ce Image:yetus/hadoop:8620d2b |
| JIRA Issue | HADOOP-15361 |
| JIRA Patch URL | 
https://issues.apache.org/jira/secure/attachment/12918537/HADOOP-15361.03.patch 
|
| Optional Tests |  asflicense  compile  javac  javadoc  mvninstall  mvnsite  
unit  shadedclient  findbugs  checkstyle  |
| uname | Linux 97afcea817e2 3.13.0-139-generic #188-Ubuntu SMP Tue Jan 9 
14:43:09 UTC 2018 x86_64 x86_64 x86_64 GNU/Linux |
| Build tool | maven |
| Personality | /testptch/patchprocess/precommit/personality/provided.sh |
| git revision | trunk / 7eb783e |
| maven | version: Apache Maven 3.3.9 |
| Default Java | 1.8.0_162 |
| findbugs | v3.1.0-RC1 |
| unit | 
https://builds.apache.org/job/PreCommit-HADOOP-Build/14482/artifact/out/patch-unit-hadoop-common-project_hadoop-common.txt
 |
|  Test Results | 
https://builds.apache.org/job/PreCommit-HADOOP-Build/14482/testReport/ |
| Max. process+thread count | 1525 (vs. ulimit of 10000) |
| modules | C: hadoop-common-project/hadoop-common U: 
hadoop-common-project/hadoop-common |
| Console output | 
https://builds.apache.org/job/PreCommit-HADOOP-Build/14482/console |
| Powered by | Apache Yetus 0.8.0-SNAPSHOT   http://yetus.apache.org |


This message was automatically generated.



> RawLocalFileSystem should use Java nio framework for rename
> -----------------------------------------------------------
>
>                 Key: HADOOP-15361
>                 URL: https://issues.apache.org/jira/browse/HADOOP-15361
>             Project: Hadoop Common
>          Issue Type: Improvement
>            Reporter: Andras Bokor
>            Assignee: Andras Bokor
>            Priority: Major
>              Labels: incompatibleChange
>         Attachments: HADOOP-15361.01.patch, HADOOP-15361.02.patch, 
> HADOOP-15361.03.patch
>
>
> Currently RawLocalFileSystem uses a fallback logic for cross-volume renames. 
> The fallback logic is a copy-on-fail logic so when rename fails it copies the 
> source then delete it.
>  An additional fallback logic was needed for Windows to provide POSIX rename 
> behavior.
> Due to the fallback logic RawLocalFileSystem does not pass the contract tests 
> (HADOOP-13082).
> With using Java nio framework both could be eliminated since it is not 
> platform dependent and provides cross-volume rename.
> In addition the fallback logic for Windows is not correct since Java io 
> overrides the destination only if the source is also a directory but 
> handleEmptyDstDirectoryOnWindows method checks only the destination. That 
> means rename allows to override a directory with a file on Windows but not on 
> Unix.
> File#renameTo and Files#move are not 100% compatible:
>  If the source is a directory and the destination is an empty directory 
> File#renameTo overrides the source but Files#move is does not. We have to use 
> {{StandardCopyOption.REPLACE_EXISTING}} but it overrides the destination even 
> if the source or the destination is a file. So to make them compatible we 
> have to check that the either the source or the destination is a directory 
> before we add the copy option.
> I think the correct strategy is
>  * Where the contract test passed so far it should pass after this
>  * Where the contract test failed because of Java specific think and not 
> because of the fallback logic we should keep the original behavior.



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