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https://issues.apache.org/jira/browse/HADOOP-16968?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17084545#comment-17084545
 ] 

Hadoop QA commented on HADOOP-16968:
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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 
44s{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} branch-3.3 Compile Tests {color} ||
| {color:green}+1{color} | {color:green} mvninstall {color} | {color:green} 27m 
31s{color} | {color:green} branch-3.3 passed {color} |
| {color:green}+1{color} | {color:green} compile {color} | {color:green}  0m 
18s{color} | {color:green} branch-3.3 passed {color} |
| {color:green}+1{color} | {color:green} checkstyle {color} | {color:green}  0m 
19s{color} | {color:green} branch-3.3 passed {color} |
| {color:green}+1{color} | {color:green} mvnsite {color} | {color:green}  0m 
22s{color} | {color:green} branch-3.3 passed {color} |
| {color:green}+1{color} | {color:green} shadedclient {color} | {color:green} 
15m  9s{color} | {color:green} branch has no errors when building and testing 
our client artifacts. {color} |
| {color:red}-1{color} | {color:red} findbugs {color} | {color:red}  0m 
30s{color} | {color:red} hadoop-cloud-storage-project/hadoop-cos in branch-3.3 
has 5 extant Findbugs warnings. {color} |
| {color:green}+1{color} | {color:green} javadoc {color} | {color:green}  0m 
20s{color} | {color:green} branch-3.3 passed {color} |
|| || || || {color:brown} Patch Compile Tests {color} ||
| {color:green}+1{color} | {color:green} mvninstall {color} | {color:green}  0m 
18s{color} | {color:green} the patch passed {color} |
| {color:green}+1{color} | {color:green} compile {color} | {color:green}  0m 
13s{color} | {color:green} the patch passed {color} |
| {color:green}+1{color} | {color:green} javac {color} | {color:green}  0m 
13s{color} | {color:green} the patch passed {color} |
| {color:green}+1{color} | {color:green} checkstyle {color} | {color:green}  0m 
11s{color} | {color:green} the patch passed {color} |
| {color:green}+1{color} | {color:green} mvnsite {color} | {color:green}  0m 
16s{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} xml {color} | {color:green}  0m  
2s{color} | {color:green} The patch has no ill-formed XML file. {color} |
| {color:green}+1{color} | {color:green} shadedclient {color} | {color:green} 
14m 11s{color} | {color:green} patch has no errors when building and testing 
our client artifacts. {color} |
| {color:red}-1{color} | {color:red} findbugs {color} | {color:red}  0m 
35s{color} | {color:red} hadoop-cloud-storage-project/hadoop-cos generated 2 
new + 1 unchanged - 4 fixed = 3 total (was 5) {color} |
| {color:green}+1{color} | {color:green} javadoc {color} | {color:green}  0m 
18s{color} | {color:green} the patch passed {color} |
|| || || || {color:brown} Other Tests {color} ||
| {color:green}+1{color} | {color:green} unit {color} | {color:green}  0m 
16s{color} | {color:green} hadoop-cos in the patch passed. {color} |
| {color:green}+1{color} | {color:green} asflicense {color} | {color:green}  0m 
27s{color} | {color:green} The patch does not generate ASF License warnings. 
{color} |
| {color:black}{color} | {color:black} {color} | {color:black} 62m 34s{color} | 
{color:black} {color} |
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|| Reason || Tests ||
| FindBugs | module:hadoop-cloud-storage-project/hadoop-cos |
|  |  Dead store to size in org.apache.hadoop.fs.cosn.CosNOutputStream.close()  
At CosNOutputStream.java:org.apache.hadoop.fs.cosn.CosNOutputStream.close()  At 
CosNOutputStream.java:[line 132] |
|  |  org.apache.hadoop.fs.cosn.CosNativeFileSystemStore.uploadPart(File, 
String, String, int, byte[]) may fail to clean up java.io.InputStream  
Obligation to clean up resource created at CosNativeFileSystemStore.java:may 
fail to clean up java.io.InputStream  Obligation to clean up resource created 
at CosNativeFileSystemStore.java:[line 254] is not discharged |
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|| Subsystem || Report/Notes ||
| Docker | Client=19.03.8 Server=19.03.8 Image:yetus/hadoop:f537a512884 |
| JIRA Issue | HADOOP-16968 |
| JIRA Patch URL | 
https://issues.apache.org/jira/secure/attachment/13000077/HADOOP-16968-branch-3.3.001.patch
 |
| Optional Tests |  dupname  asflicense  findbugs  xml  compile  javac  javadoc 
 mvninstall  mvnsite  unit  shadedclient  checkstyle  |
| uname | Linux 5ccc1d444eeb 4.15.0-74-generic #84-Ubuntu SMP Thu Dec 19 
08:06:28 UTC 2019 x86_64 x86_64 x86_64 GNU/Linux |
| Build tool | maven |
| Personality | /testptch/patchprocess/precommit/personality/provided.sh |
| git revision | branch-3.3 / b4ba9be |
| maven | version: Apache Maven 3.3.9 |
| Default Java | 1.8.0_242 |
| findbugs | v3.1.0-RC1 |
| findbugs | 
https://builds.apache.org/job/PreCommit-HADOOP-Build/16889/artifact/out/branch-findbugs-hadoop-cloud-storage-project_hadoop-cos-warnings.html
 |
| findbugs | 
https://builds.apache.org/job/PreCommit-HADOOP-Build/16889/artifact/out/new-findbugs-hadoop-cloud-storage-project_hadoop-cos.html
 |
|  Test Results | 
https://builds.apache.org/job/PreCommit-HADOOP-Build/16889/testReport/ |
| Max. process+thread count | 308 (vs. ulimit of 5500) |
| modules | C: hadoop-cloud-storage-project/hadoop-cos U: 
hadoop-cloud-storage-project/hadoop-cos |
| Console output | 
https://builds.apache.org/job/PreCommit-HADOOP-Build/16889/console |
| Powered by | Apache Yetus 0.8.0   http://yetus.apache.org |


This message was automatically generated.



> Optimizing the upload buffer in Hadoop-cos
> ------------------------------------------
>
>                 Key: HADOOP-16968
>                 URL: https://issues.apache.org/jira/browse/HADOOP-16968
>             Project: Hadoop Common
>          Issue Type: Sub-task
>          Components: fs/cos
>            Reporter: YangY
>            Assignee: YangY
>            Priority: Major
>         Attachments: HADOOP-16968-branch-3.3.001.patch
>
>
> This task focus on fixing the bug of returning an upload buffer failed when 
> some exceptions occur.
>  
> What's more, the optimizing upload buffer management would be provided.
>  



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