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Wix embedded mysql does not start due CommandFailedException due 'Stream closed'

Trying to run my embedded mysql based Unit tests I get an exception with this part:
Failed to instantiate [com.wix.mysql.EmbeddedMysql]: Factory method 'getEmbeddedMysql' threw exception; nested exception is com.wix.mysql.exceptions.CommandFailedException: Command 'CREATE USER 'sa'#'%' IDENTIFIED BY '';' on schema 'information_schema' failed with message 'Stream closed'
The same unit test and environment setup work on my MacBook
This machine with the error is an Ubuntu 20.04
Wix version is 4.6.2; Java 8, mysql.connector 8.0.24
I tried changing the dependencies versions and also tried with Java 11.
Run from within IntelliJ and on the command line. Same result.

Let me put the full comment I found in Github which helped me to fix this and I'm pretty sure most of the people seeing this in Ubuntu will find this as the solution:
I had this same issue with MySQL 5.7, while working on another open source project. I cloned the wix-embedded-mysql repository and ran the tests using the master branch, which also failed in the exact same way, except that I received a longer, more thorough message in the catch.
The issue was that I was on Ubuntu and did not have the ncurses 5 shared library installed. On ubuntu, I installed libncurses5 (apt install libncurses5) and everything started working (all tests on wix, and on my project).
I hope this helps resolve the issue.
Thanks to https://github.com/codesplode

Eclipse SVN Algorithm missing: No installed provider supports this key: javax.crypto.spec.SecretKeySpec

In Eclipse I sometimes get the following error message in the console when starting an SVN-update or any other SVN-action:
update [myLocalSVNpath] -r HEAD --force
svn: E175002: Algorithm missing:
svn: E175002: OPTIONS request failed on '[myRemoteSVNpath]/trunk'
svn: E175002: Algorithm missing:
svn: E175002: OPTIONS request failed on '[myRemoteSVNpath]/trunk'
Algorithm missing:
No installed provider supports this key: javax.crypto.spec.SecretKeySpec
class configured for Mac (provider: SunJCE) cannot be found.
com.sun.crypto.provider.HmacCore$HmacSHA384
Sometimes I can do some SVN operations (mostly update, compare, show history, commit) and then suddenly this message occurs and no SVN operations work any more. Restarting Eclipse or restarting the computer helps sometimes, not always.
I’m using a Windows 10 with Eclipse 2019-03 (4.11.0), Build id 20190314-1200 and „SVNKit Client Adapter“ in version 1.8.12.3. All other developers also use Windows 10 and a similar Eclipse version.
The workaround is to use Tortoise SVN in parallel so I can do SVN operations even if in Eclipse it doesn’t work.
Short question: How can I fix this?
Detailled question: Where does this missing class come from and where do I have to configure / install / add / exchange / remove the missing class? Or where (and how) can I install a provider that supports that asked key?

Jenkins fails to start up and empty plugins directory

I am new to jenkins, I upgraded a couple of plugins(don't remember which), after that I when I try java -jar jenkins.war I end up getting the following error.
jenkins.InitReactorRunner$1 onTaskFailed
SEVERE: Failed Loading global config
java.io.IOException: Unable to read /home/.jenkins/config.xml
I went through several links which address this issue, but no luck yet. In this link which I found https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=764711 it says some plugins are missing, and surprisingly, my /home/.jenkins/plugins/ is empty!!!
How do I restore the necessary plugins from my command line?
I am using CentOS release 6.8 (Final)
Thank you :)

I had encountered this issue somedays back,however after restarting jenkins service solved the issue.
The best you can do now is rename your config file. This way jenkins will load with the default startup.

Jmeter error trying to record a sample java.lang.IllegalArgumentException: Failed marshalling

I have one Linux VPS dedicated just for running a jmeter. The tests run fine, but failed requests are not written to error.jtl with SimpleDataWriter. Java error is written to jmeter.log instead.
I run the tests in non-gui mode:
jmeter -n -t om5.jmx -j results-tmp1/t3-l1-jmeter.log
The error
2016/07/08 16:59:35 ERROR - jmeter.reporters.ResultCollector:
Error trying to record a sample java.lang.IllegalArgumentException: Failed marshalling:class:class
org.apache.jmeter.samplers.SampleResult,content:org.apache.jmeter.samplers.SampleResult#1f605bfa[saveConfig=org.apache.jmeter.samplers.SampleSaveConfiguration#b4a9237e,parent=<null>,
responseData={},responseCode=500,label=03 add to cart,resultFileName=,samplerData=<null>,threadName=Thread Group 1-149,responseMessage=Number of samples in transaction : 2, number of failing samples : 1,
responseHeaders=,contentType=,requestHeaders=,timeStamp=1467989884109,startTime=1467989884109,endTime=1467989975286,idleTime=1001,pauseTime=0,assertionResults=<null>,subResults=[reset basketItems, /some-page],
dataType=,success=false,files=[res-tmp/t400-l5-errors.jtl],dataEncoding=<null>,elapsedTime=90176,latency=0,connectTime=0,startNextThreadLoop=false,stopThread=false,stopTest=false,
stopTestNow=false,isMonitor=false,sampleCount=1,bytes=806,headersSize=192,bodySize=614,groupThreads=400,allThreads=400,nanoTimeOffset=1467988012523,useNanoTime=true,nanoThreadSleep=5000,location=<null>]
at org.apache.jmeter.save.SaveService.saveSampleResult(SaveService.java:345)
at org.apache.jmeter.reporters.ResultCollector.sampleOccurred(ResultCollector.java:557)
at org.apache.jmeter.threads.ListenerNotifier.notifyListeners(ListenerNotifier.java:67)
at org.apache.jmeter.threads.JMeterThread.notifyListeners(JMeterThread.java:819)
at org.apache.jmeter.threads.JMeterThread.doEndTransactionSampler(JMeterThread.java:534)
at org.apache.jmeter.threads.JMeterThread.triggerEndOfLoopOnParentControllers(JMeterThread.java:342)
at org.apache.jmeter.threads.JMeterThread.run(JMeterThread.java:258)
at java.lang.Thread.run(Thread.java:745)
Caused by: java.lang.NullPointerException
I cannot find what is wrong. It is only that one machine, that gives me this error. Everywhere else I try it, it works correctly.
The OS is Debian Jessie (8.5) - minimal from official repositories. I tried many different versions of java (1.7, 1.8) - currently running on the latest 1.8 (1.8.0_92-b14) and I have the latest apache-jmeter 3.0 r1743807, but previously I used 2.13 r1665067. I don't use any third-party plugins.
I didn't notice exactly when it stopped working, what change was done (some os update, maybe some change in jmx), but I have my tests in git, so I checked out older version from the date of my last full error.jtl and it is not writing the errors to jtl as well.
I reinstalled the Debian to Ubuntu 16.04 and nothing changed.
I don't know how to debug that problem, what should I do, because on any other machine I have an access to, it works fine.

I don't know if you've fixed this problem until now?
I had the same issue, and I fixed it just now.
I guess in your jmeter script, you checked the hostname to record sample result, in jmeter.log, you could find such message: jmeter couldn't get the linux Local IP, so hostname is Null, exception threw out.
So what you need to do is remove 'Save Hostname' from 'Sample Result Save Configuration' tab.

Unparseable date after upgrading/downgrading Jenkins

So, finally trying to come up from the stone age, upgraded 1.514 to 1.644 without realizing all slaves need to be running Java 1.7 as well. So I install Java 7 on my master, swap .war files to run 1.644 and start it up. Slaves don't come up due to the aforementioned Java req. After stopping Jenkins and removing Java 1.7, I swap back to the 1.514 .war and start Jenkins back up. Now my build history is gone from all jobs with this error in the log:
WARNING: could not load /var/lib/jenkins/jobs/[job name removed]/builds/312 hudson.util.IOException2: Invalid directory name /var/lib/jenkins/jobs/YYMM Check and Build/builds/312 at hudson.model.Run.parseTimestampFromBuildDir(Run.java:354)
...
Caused by: java.text.ParseException: Unparseable date: "312" at java.text.DateFormat.parse(DateFormat.java:354) at hudson.model.Run.parseTimestampFromBuildDir(Run.java:352) ... 155 more
The only things I can find online relate to issues that were fixed pre-1.514. Anyone have any ideas? Thanks for helping.

Installed the latest version that works with Java 1.6: 1.607, and that fixed the issue as soon as it started up.

Your issues are likely related the change to the build directory naming, see JENKINS-24380+Migration.
In case you want to downgrade, there is an “unmigrate” script provided to reverse the migration of $JENKINS_HOME. To do this:
Start Jenkins ≥1.597.
Visit http://server/jenkins/JENKINS-24380/ and copy the unmigration instruction.
Shut down Jenkins completely.
Run the command as instructed by the step above.
Start Jenkins <1.597 with the same $JENKINS_HOME.