[
https://issues.apache.org/jira/browse/HADOOP-16810?focusedWorklogId=554019&page=com.atlassian.jira.plugin.system.issuetabpanels:worklog-tabpanel#worklog-554019
]
ASF GitHub Bot logged work on HADOOP-16810:
-------------------------------------------
Author: ASF GitHub Bot
Created on: 18/Feb/21 01:21
Start Date: 18/Feb/21 01:21
Worklog Time Spent: 10m
Work Description: hadoop-yetus commented on pull request #2697:
URL: https://github.com/apache/hadoop/pull/2697#issuecomment-780968125
:broken_heart: **-1 overall**
| Vote | Subsystem | Runtime | Logfile | Comment |
|:----:|----------:|--------:|:--------:|:-------:|
| +0 :ok: | reexec | 0m 32s | | 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 25s | | trunk passed |
| +1 :green_heart: | mvnsite | 24m 37s | | trunk passed |
| +1 :green_heart: | shadedclient | 13m 22s | | branch has no errors
when building and testing our client artifacts. |
|||| _ Patch Compile Tests _ |
| +1 :green_heart: | mvninstall | 19m 49s | | the patch passed |
| +1 :green_heart: | mvnsite | 19m 34s | | the patch passed |
| -1 :x: | shellcheck | 0m 0s |
[/diff-patch-shellcheck.txt](https://ci-hadoop.apache.org/job/hadoop-multibranch/job/PR-2697/4/artifact/out/diff-patch-shellcheck.txt)
| The patch generated 3 new + 0 unchanged - 1 fixed = 3 total (was 1) |
| +1 :green_heart: | shelldocs | 0m 18s | | There were no new
shelldocs issues. |
| +1 :green_heart: | whitespace | 0m 0s | | The patch has no
whitespace issues. |
| +1 :green_heart: | shadedclient | 13m 14s | | patch has no errors
when building and testing our client artifacts. |
|||| _ Other Tests _ |
| +1 :green_heart: | unit | 19m 2s | | root in the patch passed. |
| +1 :green_heart: | asflicense | 1m 3s | | The patch does not
generate ASF License warnings. |
| | | 146m 1s | | |
| Subsystem | Report/Notes |
|----------:|:-------------|
| Docker | ClientAPI=1.41 ServerAPI=1.41 base:
https://ci-hadoop.apache.org/job/hadoop-multibranch/job/PR-2697/4/artifact/out/Dockerfile
|
| GITHUB PR | https://github.com/apache/hadoop/pull/2697 |
| Optional Tests | dupname asflicense mvnsite unit shellcheck shelldocs |
| uname | Linux 0e506e982959 4.15.0-60-generic #67-Ubuntu SMP Thu Aug 22
16:55:30 UTC 2019 x86_64 x86_64 x86_64 GNU/Linux |
| Build tool | maven |
| Personality | dev-support/bin/hadoop.sh |
| git revision | trunk / e391844e8e4 |
| Test Results |
https://ci-hadoop.apache.org/job/hadoop-multibranch/job/PR-2697/4/testReport/ |
| Max. process+thread count | 538 (vs. ulimit of 5500) |
| modules | C: . U: . |
| Console output |
https://ci-hadoop.apache.org/job/hadoop-multibranch/job/PR-2697/4/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: 554019)
Time Spent: 2h (was: 1h 50m)
> 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: 2h
> 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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