[
https://issues.apache.org/jira/browse/HDFS-15160?focusedWorklogId=571283&page=com.atlassian.jira.plugin.system.issuetabpanels:worklog-tabpanel#worklog-571283
]
ASF GitHub Bot logged work on HDFS-15160:
-----------------------------------------
Author: ASF GitHub Bot
Created on: 24/Mar/21 16:42
Start Date: 24/Mar/21 16:42
Worklog Time Spent: 10m
Work Description: hadoop-yetus commented on pull request #2813:
URL: https://github.com/apache/hadoop/pull/2813#issuecomment-805981816
:broken_heart: **-1 overall**
| Vote | Subsystem | Runtime | Logfile | Comment |
|:----:|----------:|--------:|:--------:|:-------:|
| +0 :ok: | reexec | 18m 11s | | Docker mode activated. |
|||| _ Prechecks _ |
| +1 :green_heart: | dupname | 0m 1s | | 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 :green_heart: | test4tests | 0m 0s | | The patch appears to
include 1 new or modified test files. |
|||| _ branch-3.3 Compile Tests _ |
| +1 :green_heart: | mvninstall | 32m 44s | | branch-3.3 passed |
| +1 :green_heart: | compile | 1m 15s | | branch-3.3 passed |
| +1 :green_heart: | checkstyle | 0m 53s | | branch-3.3 passed |
| +1 :green_heart: | mvnsite | 1m 18s | | branch-3.3 passed |
| +1 :green_heart: | javadoc | 1m 27s | | branch-3.3 passed |
| +1 :green_heart: | spotbugs | 3m 2s | | branch-3.3 passed |
| +1 :green_heart: | shadedclient | 18m 14s | | branch has no errors
when building and testing our client artifacts. |
|||| _ Patch Compile Tests _ |
| +1 :green_heart: | mvninstall | 1m 10s | | the patch passed |
| +1 :green_heart: | compile | 1m 3s | | the patch passed |
| +1 :green_heart: | javac | 1m 3s | | the patch passed |
| +1 :green_heart: | blanks | 0m 0s | | The patch has no blanks
issues. |
| +1 :green_heart: | checkstyle | 0m 45s | | the patch passed |
| +1 :green_heart: | mvnsite | 1m 7s | | the patch passed |
| +1 :green_heart: | xml | 0m 1s | | The patch has no ill-formed XML
file. |
| +1 :green_heart: | javadoc | 1m 19s | | the patch passed |
| +1 :green_heart: | spotbugs | 3m 7s | | the patch passed |
| +1 :green_heart: | shadedclient | 18m 5s | | patch has no errors
when building and testing our client artifacts. |
|||| _ Other Tests _ |
| -1 :x: | unit | 185m 4s |
[/patch-unit-hadoop-hdfs-project_hadoop-hdfs.txt](https://ci-hadoop.apache.org/job/hadoop-multibranch/job/PR-2813/1/artifact/out/patch-unit-hadoop-hdfs-project_hadoop-hdfs.txt)
| hadoop-hdfs in the patch passed. |
| +1 :green_heart: | asflicense | 0m 38s | | The patch does not
generate ASF License warnings. |
| | | 287m 1s | | |
| Reason | Tests |
|-------:|:------|
| Failed junit tests | hadoop.hdfs.TestGetFileChecksum |
| | hadoop.hdfs.TestReconstructStripedFile |
| | hadoop.hdfs.TestReconstructStripedFileWithRandomECPolicy |
| | hadoop.hdfs.TestStripedFileAppend |
| | hadoop.hdfs.web.TestWebHdfsWithMultipleNameNodes |
| Subsystem | Report/Notes |
|----------:|:-------------|
| Docker | ClientAPI=1.41 ServerAPI=1.41 base:
https://ci-hadoop.apache.org/job/hadoop-multibranch/job/PR-2813/1/artifact/out/Dockerfile
|
| GITHUB PR | https://github.com/apache/hadoop/pull/2813 |
| Optional Tests | dupname asflicense compile javac javadoc mvninstall
mvnsite unit shadedclient spotbugs checkstyle codespell xml |
| uname | Linux c545657525e7 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 | branch-3.3 / a5783af06c7456e31eb31d7f64ea81c6511df2dc |
| Default Java | Private Build-1.8.0_282-8u282-b08-0ubuntu1~18.04-b08 |
| Test Results |
https://ci-hadoop.apache.org/job/hadoop-multibranch/job/PR-2813/1/testReport/ |
| Max. process+thread count | 3422 (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-2813/1/console |
| versions | git=2.17.1 maven=3.6.0 spotbugs=4.2.2 |
| Powered by | Apache Yetus 0.14.0-SNAPSHOT https://yetus.apache.org |
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Issue Time Tracking
-------------------
Worklog Id: (was: 571283)
Time Spent: 20m (was: 10m)
> ReplicaMap, Disk Balancer, Directory Scanner and various FsDatasetImpl
> methods should use datanode readlock
> -----------------------------------------------------------------------------------------------------------
>
> Key: HDFS-15160
> URL: https://issues.apache.org/jira/browse/HDFS-15160
> Project: Hadoop HDFS
> Issue Type: Improvement
> Components: datanode
> Affects Versions: 3.3.0
> Reporter: Stephen O'Donnell
> Assignee: Stephen O'Donnell
> Priority: Major
> Labels: pull-request-available
> Fix For: 3.4.0
>
> Attachments: HDFS-15160.001.patch, HDFS-15160.002.patch,
> HDFS-15160.003.patch, HDFS-15160.004.patch, HDFS-15160.005.patch,
> HDFS-15160.006.patch, HDFS-15160.007.patch, HDFS-15160.008.patch,
> HDFS-15160.branch-3-3.001.patch, image-2020-04-10-17-18-08-128.png,
> image-2020-04-10-17-18-55-938.png
>
> Time Spent: 20m
> Remaining Estimate: 0h
>
> Now we have HDFS-15150, we can start to move some DN operations to use the
> read lock rather than the write lock to improve concurrence. The first step
> is to make the changes to ReplicaMap, as many other methods make calls to it.
> This Jira switches read operations against the volume map to use the readLock
> rather than the write lock.
> Additionally, some methods make a call to replicaMap.replicas() (eg
> getBlockReports, getFinalizedBlocks, deepCopyReplica) and only use the result
> in a read only fashion, so they can also be switched to using a readLock.
> Next is the directory scanner and disk balancer, which only require a read
> lock.
> Finally (for this Jira) are various "low hanging fruit" items in BlockSender
> and fsdatasetImpl where is it fairly obvious they only need a read lock.
> For now, I have avoided changing anything which looks too risky, as I think
> its better to do any larger refactoring or risky changes each in their own
> Jira.
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