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https://issues.apache.org/jira/browse/HADOOP-16810?focusedWorklogId=553757&page=com.atlassian.jira.plugin.system.issuetabpanels:worklog-tabpanel#worklog-553757
]
ASF GitHub Bot logged work on HADOOP-16810:
-------------------------------------------
Author: ASF GitHub Bot
Created on: 17/Feb/21 17:36
Start Date: 17/Feb/21 17:36
Worklog Time Spent: 10m
Work Description: hadoop-yetus commented on pull request #2697:
URL: https://github.com/apache/hadoop/pull/2697#issuecomment-780724987
:broken_heart: **-1 overall**
| Vote | Subsystem | Runtime | Logfile | Comment |
|:----:|----------:|--------:|:--------:|:-------:|
| +0 :ok: | reexec | 0m 43s | | Docker mode activated. |
|||| _ Prechecks _ |
| +1 :green_heart: | dupname | 0m 1s | | 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 | 34m 28s | | trunk passed |
| +1 :green_heart: | mvnsite | 25m 59s | | trunk passed |
| +1 :green_heart: | shadedclient | 14m 51s | | branch has no errors
when building and testing our client artifacts. |
|||| _ Patch Compile Tests _ |
| +1 :green_heart: | mvninstall | 27m 55s | | the patch passed |
| +1 :green_heart: | mvnsite | 26m 56s | | the patch passed |
| -1 :x: | shellcheck | 0m 0s |
[/diff-patch-shellcheck.txt](https://ci-hadoop.apache.org/job/hadoop-multibranch/job/PR-2697/3/artifact/out/diff-patch-shellcheck.txt)
| The patch generated 1 new + 1 unchanged - 0 fixed = 2 total (was 1) |
| +1 :green_heart: | shelldocs | 0m 17s | | There were no new
shelldocs issues. |
| +1 :green_heart: | whitespace | 0m 0s | | The patch has no
whitespace issues. |
| -1 :x: | shadedclient | 1m 56s | | patch has errors when building
and testing our client artifacts. |
|||| _ Other Tests _ |
| -1 :x: | unit | 6m 57s |
[/patch-unit-root.txt](https://ci-hadoop.apache.org/job/hadoop-multibranch/job/PR-2697/3/artifact/out/patch-unit-root.txt)
| root in the patch failed. |
| +0 :ok: | asflicense | 0m 44s | | ASF License check generated no
output? |
| | | 143m 1s | | |
| Subsystem | Report/Notes |
|----------:|:-------------|
| Docker | ClientAPI=1.41 ServerAPI=1.41 base:
https://ci-hadoop.apache.org/job/hadoop-multibranch/job/PR-2697/3/artifact/out/Dockerfile
|
| GITHUB PR | https://github.com/apache/hadoop/pull/2697 |
| Optional Tests | dupname asflicense mvnsite unit shellcheck shelldocs |
| uname | Linux 13a1355e6c4e 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 / 0ed9e36282c |
| Test Results |
https://ci-hadoop.apache.org/job/hadoop-multibranch/job/PR-2697/3/testReport/ |
| Max. process+thread count | 535 (vs. ulimit of 5500) |
| modules | C: . U: . |
| Console output |
https://ci-hadoop.apache.org/job/hadoop-multibranch/job/PR-2697/3/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: 553757)
Time Spent: 1h 40m (was: 1.5h)
> 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: 1h 40m
> 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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