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https://issues.apache.org/jira/browse/HADOOP-16027?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16735655#comment-16735655
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Hadoop QA commented on HADOOP-16027:
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|| Vote || Subsystem || Runtime || Comment ||
| {color:blue}0{color} | {color:blue} reexec {color} | {color:blue} 0m
15s{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:brown} trunk Compile Tests {color} ||
| {color:green}+1{color} | {color:green} mvninstall {color} | {color:green} 19m
28s{color} | {color:green} trunk passed {color} |
| {color:green}+1{color} | {color:green} mvnsite {color} | {color:green} 0m
36s{color} | {color:green} trunk passed {color} |
| {color:green}+1{color} | {color:green} shadedclient {color} | {color:green}
31m 26s{color} | {color:green} branch has no errors when building and testing
our client artifacts. {color} |
|| || || || {color:brown} Patch Compile Tests {color} ||
| {color:green}+1{color} | {color:green} mvninstall {color} | {color:green} 0m
33s{color} | {color:green} the patch passed {color} |
| {color:green}+1{color} | {color:green} mvnsite {color} | {color:green} 0m
29s{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}
12m 44s{color} | {color:green} patch has no errors when building and testing
our client artifacts. {color} |
|| || || || {color:brown} Other Tests {color} ||
| {color:green}+1{color} | {color:green} asflicense {color} | {color:green} 0m
28s{color} | {color:green} The patch does not generate ASF License warnings.
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| {color:black}{color} | {color:black} {color} | {color:black} 46m 28s{color} |
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|| Subsystem || Report/Notes ||
| Docker | Client=17.05.0-ce Server=17.05.0-ce Image:yetus/hadoop:8f97d6f |
| JIRA Issue | HADOOP-16027 |
| JIRA Patch URL |
https://issues.apache.org/jira/secure/attachment/12953970/HADOOP-16027.002.patch
|
| Optional Tests | dupname asflicense mvnsite |
| uname | Linux 8fd065f3b047 4.4.0-139-generic #165-Ubuntu SMP Wed Oct 24
10:58:50 UTC 2018 x86_64 x86_64 x86_64 GNU/Linux |
| Build tool | maven |
| Personality | /testptch/patchprocess/precommit/personality/provided.sh |
| git revision | trunk / 5db7c49 |
| maven | version: Apache Maven 3.3.9 |
| Max. process+thread count | 410 (vs. ulimit of 10000) |
| modules | C: hadoop-tools/hadoop-aws U: hadoop-tools/hadoop-aws |
| Console output |
https://builds.apache.org/job/PreCommit-HADOOP-Build/15739/console |
| Powered by | Apache Yetus 0.8.0 http://yetus.apache.org |
This message was automatically generated.
> [DOC] Effective use of FS instances during S3A integration tests
> ----------------------------------------------------------------
>
> Key: HADOOP-16027
> URL: https://issues.apache.org/jira/browse/HADOOP-16027
> Project: Hadoop Common
> Issue Type: Sub-task
> Components: fs/s3
> Reporter: Gabor Bota
> Assignee: Gabor Bota
> Priority: Major
> Attachments: HADOOP-16027.001.patch, HADOOP-16027.002.patch
>
>
> While fixing HADOOP-15819 we found that a closed fs got into the static fs
> cache during testing, which caused other tests to fail when the tests were
> running sequentially.
> We should document some best practices in the testing section on the s3 docs
> with the following:
> {panel}
> Tests using FileSystems are fastest if they can recycle the existing FS
> instance from the same JVM. If you do that, you MUST NOT close or do unique
> configuration on them. If you want a guarantee of 100% isolation or an
> instance with unique config, create a new instance
> which you MUST close in the teardown to avoid leakage of resources.
> Do not add FileSystem instances (with e.g
> org.apache.hadoop.fs.FileSystem#addFileSystemForTesting) to the cache that
> will be modified or closed during the test runs. This can cause other tests
> to fail when using the same modified or closed FS instance. For more details
> see HADOOP-15819.
> {panel}
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