[
https://issues.apache.org/jira/browse/HDFS-16000?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17763839#comment-17763839
]
ASF GitHub Bot commented on HDFS-16000:
---------------------------------------
hadoop-yetus commented on PR #2964:
URL: https://github.com/apache/hadoop/pull/2964#issuecomment-1714295665
:broken_heart: **-1 overall**
| Vote | Subsystem | Runtime | Logfile | Comment |
|:----:|----------:|--------:|:--------:|:-------:|
| +0 :ok: | reexec | 0m 28s | | Docker mode activated. |
|||| _ Prechecks _ |
| +1 :green_heart: | dupname | 0m 0s | | No case conflicting files
found. |
| +0 :ok: | codespell | 0m 1s | | codespell was not available. |
| +0 :ok: | detsecrets | 0m 1s | | 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 | 32m 28s | | trunk passed |
| +1 :green_heart: | compile | 0m 55s | | trunk passed with JDK
Ubuntu-11.0.20+8-post-Ubuntu-1ubuntu120.04 |
| +1 :green_heart: | compile | 0m 49s | | trunk passed with JDK
Private Build-1.8.0_382-8u382-ga-1~20.04.1-b05 |
| +1 :green_heart: | checkstyle | 0m 44s | | trunk passed |
| +1 :green_heart: | mvnsite | 0m 56s | | trunk passed |
| +1 :green_heart: | javadoc | 0m 50s | | trunk passed with JDK
Ubuntu-11.0.20+8-post-Ubuntu-1ubuntu120.04 |
| +1 :green_heart: | javadoc | 1m 18s | | trunk passed with JDK
Private Build-1.8.0_382-8u382-ga-1~20.04.1-b05 |
| +1 :green_heart: | spotbugs | 2m 2s | | trunk passed |
| +1 :green_heart: | shadedclient | 22m 28s | | branch has no errors
when building and testing our client artifacts. |
|||| _ Patch Compile Tests _ |
| +1 :green_heart: | mvninstall | 0m 46s | | the patch passed |
| +1 :green_heart: | compile | 0m 46s | | the patch passed with JDK
Ubuntu-11.0.20+8-post-Ubuntu-1ubuntu120.04 |
| +1 :green_heart: | javac | 0m 46s | | the patch passed |
| +1 :green_heart: | compile | 0m 42s | | the patch passed with JDK
Private Build-1.8.0_382-8u382-ga-1~20.04.1-b05 |
| +1 :green_heart: | javac | 0m 42s | | the patch passed |
| +1 :green_heart: | blanks | 0m 0s | | The patch has no blanks
issues. |
| +1 :green_heart: | checkstyle | 0m 35s | | the patch passed |
| +1 :green_heart: | mvnsite | 0m 49s | | the patch passed |
| +1 :green_heart: | javadoc | 0m 38s | | the patch passed with JDK
Ubuntu-11.0.20+8-post-Ubuntu-1ubuntu120.04 |
| +1 :green_heart: | javadoc | 1m 10s | | the patch passed with JDK
Private Build-1.8.0_382-8u382-ga-1~20.04.1-b05 |
| +1 :green_heart: | spotbugs | 1m 52s | | the patch passed |
| +1 :green_heart: | shadedclient | 22m 8s | | patch has no errors
when building and testing our client artifacts. |
|||| _ Other Tests _ |
| -1 :x: | unit | 195m 49s |
[/patch-unit-hadoop-hdfs-project_hadoop-hdfs.txt](https://ci-hadoop.apache.org/job/hadoop-multibranch/job/PR-2964/5/artifact/out/patch-unit-hadoop-hdfs-project_hadoop-hdfs.txt)
| hadoop-hdfs in the patch passed. |
| +1 :green_heart: | asflicense | 0m 39s | | The patch does not
generate ASF License warnings. |
| | | 290m 23s | | |
| Reason | Tests |
|-------:|:------|
| Failed junit tests |
hadoop.hdfs.server.namenode.snapshot.TestSnapshotRename |
| | hadoop.hdfs.server.namenode.TestFSImageWithSnapshot |
| Subsystem | Report/Notes |
|----------:|:-------------|
| Docker | ClientAPI=1.43 ServerAPI=1.43 base:
https://ci-hadoop.apache.org/job/hadoop-multibranch/job/PR-2964/5/artifact/out/Dockerfile
|
| GITHUB PR | https://github.com/apache/hadoop/pull/2964 |
| Optional Tests | dupname asflicense compile javac javadoc mvninstall
mvnsite unit shadedclient spotbugs checkstyle codespell detsecrets |
| uname | Linux bfbb4eff844e 4.15.0-213-generic #224-Ubuntu SMP Mon Jun 19
13:30:12 UTC 2023 x86_64 x86_64 x86_64 GNU/Linux |
| Build tool | maven |
| Personality | dev-support/bin/hadoop.sh |
| git revision | trunk / b3ebd6c491dac676e6d68f4f72737557e492a49a |
| 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-2964/5/testReport/ |
| Max. process+thread count | 3402 (vs. ulimit of 5500) |
| modules | C: hadoop-hdfs-project/hadoop-hdfs U:
hadoop-hdfs-project/hadoop-hdfs |
| Console output |
https://ci-hadoop.apache.org/job/hadoop-multibranch/job/PR-2964/5/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.
> HDFS : Rename performance optimization
> --------------------------------------
>
> Key: HDFS-16000
> URL: https://issues.apache.org/jira/browse/HDFS-16000
> Project: Hadoop HDFS
> Issue Type: Improvement
> Components: hdfs, namenode
> Affects Versions: 3.1.4, 3.3.1
> Reporter: Xiangyi Zhu
> Assignee: Xiangyi Zhu
> Priority: Major
> Labels: pull-request-available
> Attachments: 20210428-143238.svg, 20210428-171635-lambda.svg,
> HDFS-16000.patch
>
> Time Spent: 50m
> Remaining Estimate: 0h
>
> It takes a long time to move a large directory with rename. For example, it
> takes about 40 seconds to move a 1000W directory. When a large amount of data
> is deleted to the trash, the move large directory will occur when the recycle
> bin makes checkpoint. In addition, the user may also actively trigger the
> move large directory operation, which will cause the NameNode to lock too
> long and be killed by Zkfc. Through the flame graph, it is found that the
> main time consuming is to create the EnumCounters object.
> h3. I think the following two points can optimize the efficiency of rename
> execution
> h3. QuotaCount calculation time-consuming optimization:
> * Create a QuotaCounts object in the calculation directory quotaCount, and
> pass the quotaCount to the next calculation function through a parameter each
> time, so as to avoid creating an EnumCounters object for each calculation.
> * In addition, through the flame graph, it is found that using lambda to
> modify QuotaCounts takes longer than the ordinary method, so the ordinary
> method is used to modify the QuotaCounts count.
> h3. Rename logic optimization:
> * Regardless of whether the rename operation is the source directory and the
> target directory, the quota count must be calculated three times. The first
> time, check whether the moved directory exceeds the target directory quota,
> the second time, calculate the mobile directory quota to update the source
> directory quota, and the third time, calculate the mobile directory
> configuration update to the target directory.
> * I think some of the above three quota quota calculations are unnecessary.
> For example, if all parent directories of the source directory and target
> directory are not configured with quota, there is no need to calculate
> quotaCount. Even if both the source directory and the target directory use
> quota, there is no need to calculate the quota three times. The calculation
> logic for the first and third times is the same, and it only needs to be
> calculated once.
--
This message was sent by Atlassian Jira
(v8.20.10#820010)
---------------------------------------------------------------------
To unsubscribe, e-mail: [email protected]
For additional commands, e-mail: [email protected]
