[ 
https://issues.apache.org/jira/browse/HADOOP-13605?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15488249#comment-15488249
 ] 

Hadoop QA commented on HADOOP-13605:
------------------------------------

| (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 
20s{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}  7m 
16s{color} | {color:green} branch-2 passed {color} |
| {color:green}+1{color} | {color:green} compile {color} | {color:green}  6m  
3s{color} | {color:green} branch-2 passed with JDK v1.8.0_101 {color} |
| {color:green}+1{color} | {color:green} compile {color} | {color:green}  6m 
31s{color} | {color:green} branch-2 passed with JDK v1.7.0_111 {color} |
| {color:green}+1{color} | {color:green} checkstyle {color} | {color:green}  0m 
26s{color} | {color:green} branch-2 passed {color} |
| {color:green}+1{color} | {color:green} mvnsite {color} | {color:green}  0m 
58s{color} | {color:green} branch-2 passed {color} |
| {color:green}+1{color} | {color:green} mvneclipse {color} | {color:green}  0m 
16s{color} | {color:green} branch-2 passed {color} |
| {color:green}+1{color} | {color:green} findbugs {color} | {color:green}  1m 
38s{color} | {color:green} branch-2 passed {color} |
| {color:green}+1{color} | {color:green} javadoc {color} | {color:green}  0m 
45s{color} | {color:green} branch-2 passed with JDK v1.8.0_101 {color} |
| {color:green}+1{color} | {color:green} javadoc {color} | {color:green}  0m 
56s{color} | {color:green} branch-2 passed with JDK v1.7.0_111 {color} |
| {color:green}+1{color} | {color:green} mvninstall {color} | {color:green}  0m 
42s{color} | {color:green} the patch passed {color} |
| {color:green}+1{color} | {color:green} compile {color} | {color:green}  5m 
24s{color} | {color:green} the patch passed with JDK v1.8.0_101 {color} |
| {color:green}+1{color} | {color:green} javac {color} | {color:green}  5m 
24s{color} | {color:green} the patch passed {color} |
| {color:green}+1{color} | {color:green} compile {color} | {color:green}  6m 
31s{color} | {color:green} the patch passed with JDK v1.7.0_111 {color} |
| {color:green}+1{color} | {color:green} javac {color} | {color:green}  6m 
31s{color} | {color:green} the patch passed {color} |
| {color:orange}-0{color} | {color:orange} checkstyle {color} | {color:orange}  
0m 27s{color} | {color:orange} hadoop-common-project/hadoop-common: The patch 
generated 8 new + 79 unchanged - 50 fixed = 87 total (was 129) {color} |
| {color:green}+1{color} | {color:green} mvnsite {color} | {color:green}  0m 
57s{color} | {color:green} the patch passed {color} |
| {color:green}+1{color} | {color:green} mvneclipse {color} | {color:green}  0m 
16s{color} | {color:green} the patch passed {color} |
| {color:red}-1{color} | {color:red} whitespace {color} | {color:red}  0m  
0s{color} | {color:red} The patch has 48 line(s) that end in whitespace. Use 
git apply --whitespace=fix <<patch_file>>. Refer 
https://git-scm.com/docs/git-apply {color} |
| {color:green}+1{color} | {color:green} findbugs {color} | {color:green}  1m 
56s{color} | {color:green} the patch passed {color} |
| {color:red}-1{color} | {color:red} javadoc {color} | {color:red}  0m 
47s{color} | {color:red} hadoop-common-project_hadoop-common-jdk1.8.0_101 with 
JDK v1.8.0_101 generated 1 new + 6 unchanged - 0 fixed = 7 total (was 6) 
{color} |
| {color:red}-1{color} | {color:red} javadoc {color} | {color:red}  0m 
58s{color} | {color:red} hadoop-common-project_hadoop-common-jdk1.7.0_111 with 
JDK v1.7.0_111 generated 1 new + 13 unchanged - 0 fixed = 14 total (was 13) 
{color} |
| {color:red}-1{color} | {color:red} unit {color} | {color:red}  8m 10s{color} 
| {color:red} hadoop-common in the patch failed with JDK v1.7.0_111. {color} |
| {color:green}+1{color} | {color:green} asflicense {color} | {color:green}  0m 
23s{color} | {color:green} The patch does not generate ASF License warnings. 
{color} |
| {color:black}{color} | {color:black} {color} | {color:black} 62m 27s{color} | 
{color:black} {color} |
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|| Reason || Tests ||
| JDK v1.8.0_101 Failed junit tests | hadoop.fs.TestFileSystemCaching |
| JDK v1.7.0_111 Failed junit tests | hadoop.fs.TestFileSystemCaching |
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|| Subsystem || Report/Notes ||
| Docker |  Image:yetus/hadoop:b59b8b7 |
| JIRA Issue | HADOOP-13605 |
| JIRA Patch URL | 
https://issues.apache.org/jira/secure/attachment/12828308/HADOOP-13605-branch-2-001.patch
 |
| Optional Tests |  asflicense  compile  javac  javadoc  mvninstall  mvnsite  
unit  findbugs  checkstyle  |
| uname | Linux 856da69de801 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 | branch-2 / 55600b3 |
| Default Java | 1.7.0_111 |
| Multi-JDK versions |  /usr/lib/jvm/java-8-oracle:1.8.0_101 
/usr/lib/jvm/java-7-openjdk-amd64:1.7.0_111 |
| findbugs | v3.0.0 |
| checkstyle | 
https://builds.apache.org/job/PreCommit-HADOOP-Build/10498/artifact/patchprocess/diff-checkstyle-hadoop-common-project_hadoop-common.txt
 |
| whitespace | 
https://builds.apache.org/job/PreCommit-HADOOP-Build/10498/artifact/patchprocess/whitespace-eol.txt
 |
| javadoc | 
https://builds.apache.org/job/PreCommit-HADOOP-Build/10498/artifact/patchprocess/diff-javadoc-javadoc-hadoop-common-project_hadoop-common-jdk1.8.0_101.txt
 |
| javadoc | 
https://builds.apache.org/job/PreCommit-HADOOP-Build/10498/artifact/patchprocess/diff-javadoc-javadoc-hadoop-common-project_hadoop-common-jdk1.7.0_111.txt
 |
| unit | 
https://builds.apache.org/job/PreCommit-HADOOP-Build/10498/artifact/patchprocess/patch-unit-hadoop-common-project_hadoop-common-jdk1.7.0_111.txt
 |
| JDK v1.7.0_111  Test Results | 
https://builds.apache.org/job/PreCommit-HADOOP-Build/10498/testReport/ |
| modules | C: hadoop-common-project/hadoop-common U: 
hadoop-common-project/hadoop-common |
| Console output | 
https://builds.apache.org/job/PreCommit-HADOOP-Build/10498/console |
| Powered by | Apache Yetus 0.4.0-SNAPSHOT   http://yetus.apache.org |


This message was automatically generated.



> Clean up FileSystem javadocs, logging; improve diagnostics on FS load
> ---------------------------------------------------------------------
>
>                 Key: HADOOP-13605
>                 URL: https://issues.apache.org/jira/browse/HADOOP-13605
>             Project: Hadoop Common
>          Issue Type: Improvement
>          Components: fs
>    Affects Versions: 2.8.0
>            Reporter: Steve Loughran
>            Assignee: Steve Loughran
>         Attachments: HADOOP-13605-branch-2-001.patch
>
>
> We can't easily debug FS instantiation problems as there isn't much detail in 
> what was going on.
> We can add more logging, but cannot simply switch {{FileSystem.LOG}} to SLF4J 
> —the class is used in too many places, including tests which cast it. 
> Instead, add a new private SLF4J Logger, {{LOGGER}} and switch logging to it. 
> While working in the base FileSystem class, take the opportunity to clean up 
> javadocs and comments
> # add the list of exceptions, including indicating which base classes throw 
> UnsupportedOperationExceptions
> # cut bits in the comments which are not true
> The outcome of this patch is that IDEs shouldn't highlight most of the file 
> as flawed in some way or another



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