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https://issues.apache.org/jira/browse/HDFS-17156?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17755372#comment-17755372
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ASF GitHub Bot commented on HDFS-17156:
---------------------------------------
hadoop-yetus commented on PR #5951:
URL: https://github.com/apache/hadoop/pull/5951#issuecomment-1681656464
:confetti_ball: **+1 overall**
| Vote | Subsystem | Runtime | Logfile | Comment |
|:----:|----------:|--------:|:--------:|:-------:|
| +0 :ok: | reexec | 0m 51s | | Docker mode activated. |
|||| _ Prechecks _ |
| +1 :green_heart: | dupname | 0m 0s | | No case conflicting files
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| +0 :ok: | codespell | 0m 0s | | codespell was not available. |
| +0 :ok: | detsecrets | 0m 0s | | detect-secrets was not available.
|
| +1 :green_heart: | @author | 0m 0s | | The patch does not contain
any @author tags. |
| +1 :green_heart: | test4tests | 0m 0s | | The patch appears to
include 1 new or modified test files. |
|||| _ trunk Compile Tests _ |
| +1 :green_heart: | mvninstall | 49m 26s | | trunk passed |
| +1 :green_heart: | compile | 18m 17s | | trunk passed with JDK
Ubuntu-11.0.20+8-post-Ubuntu-1ubuntu120.04 |
| +1 :green_heart: | compile | 16m 29s | | trunk passed with JDK
Private Build-1.8.0_382-8u382-ga-1~20.04.1-b05 |
| +1 :green_heart: | checkstyle | 1m 11s | | trunk passed |
| +1 :green_heart: | mvnsite | 1m 36s | | trunk passed |
| +1 :green_heart: | javadoc | 1m 9s | | trunk passed with JDK
Ubuntu-11.0.20+8-post-Ubuntu-1ubuntu120.04 |
| +1 :green_heart: | javadoc | 0m 45s | | trunk passed with JDK
Private Build-1.8.0_382-8u382-ga-1~20.04.1-b05 |
| +1 :green_heart: | spotbugs | 2m 34s | | trunk passed |
| +1 :green_heart: | shadedclient | 39m 52s | | branch has no errors
when building and testing our client artifacts. |
|||| _ Patch Compile Tests _ |
| +1 :green_heart: | mvninstall | 0m 54s | | the patch passed |
| +1 :green_heart: | compile | 17m 19s | | the patch passed with JDK
Ubuntu-11.0.20+8-post-Ubuntu-1ubuntu120.04 |
| +1 :green_heart: | javac | 17m 19s | | the patch passed |
| +1 :green_heart: | compile | 16m 35s | | the patch passed with JDK
Private Build-1.8.0_382-8u382-ga-1~20.04.1-b05 |
| +1 :green_heart: | javac | 16m 35s | | the patch passed |
| +1 :green_heart: | blanks | 0m 0s | | The patch has no blanks
issues. |
| -0 :warning: | checkstyle | 1m 9s |
[/results-checkstyle-hadoop-common-project_hadoop-common.txt](https://ci-hadoop.apache.org/job/hadoop-multibranch/job/PR-5951/3/artifact/out/results-checkstyle-hadoop-common-project_hadoop-common.txt)
| hadoop-common-project/hadoop-common: The patch generated 1 new + 127
unchanged - 0 fixed = 128 total (was 127) |
| +1 :green_heart: | mvnsite | 1m 34s | | the patch passed |
| +1 :green_heart: | javadoc | 1m 3s | | the patch passed with JDK
Ubuntu-11.0.20+8-post-Ubuntu-1ubuntu120.04 |
| +1 :green_heart: | javadoc | 0m 45s | | the patch passed with JDK
Private Build-1.8.0_382-8u382-ga-1~20.04.1-b05 |
| +1 :green_heart: | spotbugs | 2m 44s | | the patch passed |
| +1 :green_heart: | shadedclient | 39m 53s | | patch has no errors
when building and testing our client artifacts. |
|||| _ Other Tests _ |
| +1 :green_heart: | unit | 18m 54s | | hadoop-common in the patch
passed. |
| +1 :green_heart: | asflicense | 0m 56s | | The patch does not
generate ASF License warnings. |
| | | 236m 34s | | |
| Subsystem | Report/Notes |
|----------:|:-------------|
| Docker | ClientAPI=1.43 ServerAPI=1.43 base:
https://ci-hadoop.apache.org/job/hadoop-multibranch/job/PR-5951/3/artifact/out/Dockerfile
|
| GITHUB PR | https://github.com/apache/hadoop/pull/5951 |
| Optional Tests | dupname asflicense compile javac javadoc mvninstall
mvnsite unit shadedclient spotbugs checkstyle codespell detsecrets |
| uname | Linux 3da3be0432d9 4.15.0-212-generic #223-Ubuntu SMP Tue May 23
13:09:22 UTC 2023 x86_64 x86_64 x86_64 GNU/Linux |
| Build tool | maven |
| Personality | dev-support/bin/hadoop.sh |
| git revision | trunk / 49cae565e0c1235e0bf279c776b2c38ba6c60a42 |
| Default Java | Private Build-1.8.0_382-8u382-ga-1~20.04.1-b05 |
| Multi-JDK versions |
/usr/lib/jvm/java-11-openjdk-amd64:Ubuntu-11.0.20+8-post-Ubuntu-1ubuntu120.04
/usr/lib/jvm/java-8-openjdk-amd64:Private
Build-1.8.0_382-8u382-ga-1~20.04.1-b05 |
| Test Results |
https://ci-hadoop.apache.org/job/hadoop-multibranch/job/PR-5951/3/testReport/ |
| Max. process+thread count | 1263 (vs. ulimit of 5500) |
| modules | C: hadoop-common-project/hadoop-common U:
hadoop-common-project/hadoop-common |
| Console output |
https://ci-hadoop.apache.org/job/hadoop-multibranch/job/PR-5951/3/console |
| versions | git=2.25.1 maven=3.6.3 spotbugs=4.2.2 |
| Powered by | Apache Yetus 0.14.0 https://yetus.apache.org |
This message was automatically generated.
> mapreduce job encounters java.io.IOException
> --------------------------------------------
>
> Key: HDFS-17156
> URL: https://issues.apache.org/jira/browse/HDFS-17156
> Project: Hadoop HDFS
> Issue Type: Bug
> Components: rbf
> Reporter: Chunyi Yang
> Assignee: Chunyi Yang
> Priority: Minor
> Labels: Observer, RBF, pull-request-available
>
> While executing a mapreduce job in an environment utilizing Router-Based
> Federation with Observer read enabled, there is an estimated 1% chance of
> encountering the following error.
> {code:java}
> "java.io.IOException: Resource
> hdfs://XXXX/user/XXXX/.staging/job_XXXXXX/.tez/application_XXXXXX/tez-conf.pb
> changed on src filesystem - expected: \"2023-07-07T12:41:16.801+0900\", was:
> \"2023-07-07T12:41:16.822+0900\", current time:
> \"2023-07-07T12:41:22.386+0900\"",
> {code}
> This error happens in function verifyAndCopy inside FSDownload.java when
> nodemanager tries to download a file right after the file has been written to
> the HDFS. The write operation runs on active namenode and read operation runs
> on observer namenode as expected.
> The edits file and hdfs-audit files indicate that the expected timestamp
> mentioned in the error message aligns with the OP_CLOSE MTIME of the
> 'tez-conf.pb' file (which is correct). However, the actual timestamp
> retrieved from the read operation corresponds to the OP_ADD MTIME of the
> target 'tez-conf.pf' file (which is incorrect). This inconsistency suggests
> that the observer namenode responds to the client before its edits file is
> updated with the latest stateId.
> Further troubleshooting has revealed that during write operations, the router
> responds to the client before receiving the latest stateId from the active
> namenode. Consequently, the outdated stateId is then used in the subsequent
> read operation on the observer namenode, leading to inaccuracies in the
> information provided by the observer namenode.
> To resolve this issue, it is essential to ensure that the router sends a
> response to the client only after receiving the latest stateId from the
> active namenode.
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