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Posted to common-issues@hadoop.apache.org by GitBox <gi...@apache.org> on 2022/01/26 10:26:10 UTC
[GitHub] [hadoop] jianghuazhu opened a new pull request #3937: HDFS-16439.Makes calculating maxNodesPerRack simpler.
jianghuazhu opened a new pull request #3937:
URL: https://github.com/apache/hadoop/pull/3937
### Description of PR
It should be simpler to compute numOfReplicas when BlockPlacementPolicyDefault#getMaxNodesPerRack() is executed. This is the purpose of this pr.
Details: HDFS-16439
### How was this patch tested?
For testing, there is not much pressure.
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[GitHub] [hadoop] jianghuazhu commented on pull request #3937: HDFS-16439.Makes calculating maxNodesPerRack simpler.
Posted by GitBox <gi...@apache.org>.
jianghuazhu commented on pull request #3937:
URL: https://github.com/apache/hadoop/pull/3937#issuecomment-1022924893
Would you like to help review this PR, @ayushtkn @tomscut .
Thank you very much.
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[GitHub] [hadoop] hadoop-yetus commented on pull request #3937: HDFS-16439.Makes calculating maxNodesPerRack simpler.
Posted by GitBox <gi...@apache.org>.
hadoop-yetus commented on pull request #3937:
URL: https://github.com/apache/hadoop/pull/3937#issuecomment-1022338080
:broken_heart: **-1 overall**
| Vote | Subsystem | Runtime | Logfile | Comment |
|:----:|----------:|--------:|:--------:|:-------:|
| +0 :ok: | reexec | 0m 40s | | Docker mode activated. |
|||| _ Prechecks _ |
| +1 :green_heart: | dupname | 0m 0s | | No case conflicting files found. |
| +0 :ok: | codespell | 0m 0s | | codespell was not available. |
| +1 :green_heart: | @author | 0m 0s | | The patch does not contain any @author tags. |
| -1 :x: | test4tests | 0m 0s | | 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. |
|||| _ trunk Compile Tests _ |
| +1 :green_heart: | mvninstall | 32m 22s | | trunk passed |
| +1 :green_heart: | compile | 1m 27s | | trunk passed with JDK Ubuntu-11.0.13+8-Ubuntu-0ubuntu1.20.04 |
| +1 :green_heart: | compile | 1m 18s | | trunk passed with JDK Private Build-1.8.0_312-8u312-b07-0ubuntu1~20.04-b07 |
| +1 :green_heart: | checkstyle | 1m 1s | | trunk passed |
| +1 :green_heart: | mvnsite | 1m 29s | | trunk passed |
| +1 :green_heart: | javadoc | 1m 2s | | trunk passed with JDK Ubuntu-11.0.13+8-Ubuntu-0ubuntu1.20.04 |
| +1 :green_heart: | javadoc | 1m 33s | | trunk passed with JDK Private Build-1.8.0_312-8u312-b07-0ubuntu1~20.04-b07 |
| +1 :green_heart: | spotbugs | 3m 9s | | trunk passed |
| +1 :green_heart: | shadedclient | 22m 19s | | branch has no errors when building and testing our client artifacts. |
|||| _ Patch Compile Tests _ |
| +1 :green_heart: | mvninstall | 1m 15s | | the patch passed |
| +1 :green_heart: | compile | 1m 18s | | the patch passed with JDK Ubuntu-11.0.13+8-Ubuntu-0ubuntu1.20.04 |
| +1 :green_heart: | javac | 1m 18s | | the patch passed |
| +1 :green_heart: | compile | 1m 13s | | the patch passed with JDK Private Build-1.8.0_312-8u312-b07-0ubuntu1~20.04-b07 |
| +1 :green_heart: | javac | 1m 13s | | the patch passed |
| +1 :green_heart: | blanks | 0m 0s | | The patch has no blanks issues. |
| +1 :green_heart: | checkstyle | 0m 52s | | the patch passed |
| +1 :green_heart: | mvnsite | 1m 19s | | the patch passed |
| +1 :green_heart: | javadoc | 0m 49s | | the patch passed with JDK Ubuntu-11.0.13+8-Ubuntu-0ubuntu1.20.04 |
| +1 :green_heart: | javadoc | 1m 22s | | the patch passed with JDK Private Build-1.8.0_312-8u312-b07-0ubuntu1~20.04-b07 |
| +1 :green_heart: | spotbugs | 3m 17s | | the patch passed |
| +1 :green_heart: | shadedclient | 22m 19s | | patch has no errors when building and testing our client artifacts. |
|||| _ Other Tests _ |
| +1 :green_heart: | unit | 230m 33s | | hadoop-hdfs in the patch passed. |
| +1 :green_heart: | asflicense | 0m 47s | | The patch does not generate ASF License warnings. |
| | | 329m 17s | | |
| Subsystem | Report/Notes |
|----------:|:-------------|
| Docker | ClientAPI=1.41 ServerAPI=1.41 base: https://ci-hadoop.apache.org/job/hadoop-multibranch/job/PR-3937/1/artifact/out/Dockerfile |
| GITHUB PR | https://github.com/apache/hadoop/pull/3937 |
| Optional Tests | dupname asflicense compile javac javadoc mvninstall mvnsite unit shadedclient spotbugs checkstyle codespell |
| uname | Linux b88178c3d165 4.15.0-58-generic #64-Ubuntu SMP Tue Aug 6 11:12:41 UTC 2019 x86_64 x86_64 x86_64 GNU/Linux |
| Build tool | maven |
| Personality | dev-support/bin/hadoop.sh |
| git revision | trunk / a1e510065ec31953f455469af3dbd66dfdf4355b |
| Default Java | Private Build-1.8.0_312-8u312-b07-0ubuntu1~20.04-b07 |
| Multi-JDK versions | /usr/lib/jvm/java-11-openjdk-amd64:Ubuntu-11.0.13+8-Ubuntu-0ubuntu1.20.04 /usr/lib/jvm/java-8-openjdk-amd64:Private Build-1.8.0_312-8u312-b07-0ubuntu1~20.04-b07 |
| Test Results | https://ci-hadoop.apache.org/job/hadoop-multibranch/job/PR-3937/1/testReport/ |
| Max. process+thread count | 3155 (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-3937/1/console |
| versions | git=2.25.1 maven=3.6.3 spotbugs=4.2.2 |
| Powered by | Apache Yetus 0.14.0-SNAPSHOT https://yetus.apache.org |
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[GitHub] [hadoop] jianghuazhu commented on pull request #3937: HDFS-16439.Makes calculating maxNodesPerRack simpler.
Posted by GitBox <gi...@apache.org>.
jianghuazhu commented on pull request #3937:
URL: https://github.com/apache/hadoop/pull/3937#issuecomment-1023271785
Thanks @ayushtkn for the comment and review.
This happens when more replicas are required, say the number of all DataNodes is 5 and the number of replicas required for the file is 7. At this time, the code execution here is usually triggered, because the number of copies of the file cannot exceed the number of nodes in the cluster.
Here, there will be 2 benefits:
1. When resetting the new number of file copies, it will be more concise and easier to understand, (clusterSize - numOfChosen). This is the main purpose.
2. It can reduce some calculation steps, (clusterSize - numOfChosen) only needs to perform 1 step.
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