[
https://issues.apache.org/jira/browse/HADOOP-16810?focusedWorklogId=552103&page=com.atlassian.jira.plugin.system.issuetabpanels:worklog-tabpanel#worklog-552103
]
ASF GitHub Bot logged work on HADOOP-16810:
-------------------------------------------
Author: ASF GitHub Bot
Created on: 13/Feb/21 01:54
Start Date: 13/Feb/21 01:54
Worklog Time Spent: 10m
Work Description: hadoop-yetus commented on pull request #2697:
URL: https://github.com/apache/hadoop/pull/2697#issuecomment-778543321
:broken_heart: **-1 overall**
| Vote | Subsystem | Runtime | Logfile | Comment |
|:----:|----------:|--------:|:--------:|:-------:|
| +0 :ok: | reexec | 22m 3s | | Docker mode activated. |
|||| _ Prechecks _ |
| +1 :green_heart: | dupname | 0m 0s | | No case conflicting files
found. |
| +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 54s | | trunk passed |
| +1 :green_heart: | mvnsite | 24m 57s | | trunk passed |
| +1 :green_heart: | shadedclient | 13m 28s | | branch has no errors
when building and testing our client artifacts. |
|||| _ Patch Compile Tests _ |
| +1 :green_heart: | mvninstall | 19m 30s | | the patch passed |
| +1 :green_heart: | mvnsite | 19m 41s | | the patch passed |
| -1 :x: | shellcheck | 0m 1s |
[/diff-patch-shellcheck.txt](https://ci-hadoop.apache.org/job/hadoop-multibranch/job/PR-2697/1/artifact/out/diff-patch-shellcheck.txt)
| The patch generated 1 new + 2 unchanged - 0 fixed = 3 total (was 2) |
| +1 :green_heart: | shelldocs | 0m 20s | | The patch generated 0 new
+ 0 unchanged - 236 fixed = 0 total (was 236) |
| +1 :green_heart: | whitespace | 0m 0s | | The patch has no
whitespace issues. |
| -1 :x: | shadedclient | 1m 52s | | patch has errors when building
and testing our client artifacts. |
|||| _ Other Tests _ |
| -1 :x: | unit | 5m 39s |
[/patch-unit-root.txt](https://ci-hadoop.apache.org/job/hadoop-multibranch/job/PR-2697/1/artifact/out/patch-unit-root.txt)
| root in the patch failed. |
| +1 :green_heart: | asflicense | 1m 2s | | The patch does not
generate ASF License warnings. |
| | | 143m 31s | | |
| Subsystem | Report/Notes |
|----------:|:-------------|
| Docker | ClientAPI=1.41 ServerAPI=1.41 base:
https://ci-hadoop.apache.org/job/hadoop-multibranch/job/PR-2697/1/artifact/out/Dockerfile
|
| GITHUB PR | https://github.com/apache/hadoop/pull/2697 |
| Optional Tests | dupname asflicense mvnsite unit shellcheck shelldocs |
| uname | Linux 745cc0178d92 4.15.0-65-generic #74-Ubuntu SMP Tue Sep 17
17:06:04 UTC 2019 x86_64 x86_64 x86_64 GNU/Linux |
| Build tool | maven |
| Personality | dev-support/bin/hadoop.sh |
| git revision | trunk / f9a073c6c18 |
| Test Results |
https://ci-hadoop.apache.org/job/hadoop-multibranch/job/PR-2697/1/testReport/ |
| Max. process+thread count | 578 (vs. ulimit of 5500) |
| modules | C: . U: . |
| Console output |
https://ci-hadoop.apache.org/job/hadoop-multibranch/job/PR-2697/1/console |
| versions | git=2.25.1 maven=3.6.3 shellcheck=0.7.0 |
| Powered by | Apache Yetus 0.13.0-SNAPSHOT https://yetus.apache.org |
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Issue Time Tracking
-------------------
Worklog Id: (was: 552103)
Time Spent: 0.5h (was: 20m)
> Increase entropy to improve cryptographic randomness on precommit Linux VMs
> ---------------------------------------------------------------------------
>
> Key: HADOOP-16810
> URL: https://issues.apache.org/jira/browse/HADOOP-16810
> Project: Hadoop Common
> Issue Type: Bug
> Reporter: Ahmed Hussein
> Assignee: Ahmed Hussein
> Priority: Blocker
> Labels: pull-request-available
> Time Spent: 0.5h
> Remaining Estimate: 0h
>
> I was investigating a JUnit test (MAPREDUCE-7079
> :TestMRIntermediateDataEncryption is failing in precommit builds) that was
> consistently hanging on Linux VMs and failing Mapreduce pre-builds.
> I found that the test hangs slows or hangs indefinitely whenever Java reads
> the random file.
> I explored two different ways to get that test case to work properly on my
> local Linux VM running rel7:
> # To install "haveged" and "rng-tools" on the virtual machine running Rel7.
> Then, start rngd service {{sudo service rngd start}} . This will fix the
> problem for all the components on the image including java, native and any
> other component.
> # Change java configuration to load urandom
> {code:bash}
> sudo vim $JAVA_HOME/jre/lib/security/java.security
> ## Change the line “securerandom.source=file:/dev/random” to read:
> securerandom.source=file:/dev/./urandom
> {code}
> The first solution is better because this will fix the problem for everything
> that requires SSL/TLS or other services that depend upon encryption.
> Since the precommit build runs on Docker, then it would be best to mount
> {{/dev/urandom}} from the host as {{/dev/random}} into the container:
> {code:java}
> docker run -v /dev/urandom:/dev/random
> {code}
> For Yetus, we need to add the mount to the {{DOCKER_EXTRAARGS}} as follows:
> {code:java}
> DOCKER_EXTRAARGS+=("-v" "/dev/urandom:/dev/random")
> {code}
> ...
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