ContextSwitchDeadlock was received ...oops

While im de-buging my CodedUI code on VS 2015 i got this information dialog box.

The CLR has been unable to transition from COM context 0x6d2290 to COM context 0x6d24b8 for 60 seconds. The thread that owns the destination context/apartment is most likely either doing a non pumping wait or processing a very long running operation without pumping Windows messages. This situation generally has a negative performance impact and may even lead to the application becoming non responsive or memory usage accumulating continually over time. To avoid this problem, 

This is because of im having some Thread.Sleep()  lines all over the code and some of them contain more than 1 minute.

So the solution to resolve this was to unchecked the ContextSwitchDeadLock check box at

Debug>Exceptions>Manage Debugging Assistants>ContextSwitchDeadLock

Org.sonarqube.ws.client.HttpException: Error 500 on Sonar

So far i was scanning small project via Sonar scanner.

For eg : the Zip file size would be 7KB, as on the below few lines.

Total lines of codes for this project was 200-400 lines.

INFO: Calculating CPD for 1 files
INFO: CPD calculation finished
INFO: Analysis report generated in 62ms, dir size=22 KB
INFO: Analysis reports compressed in 16ms, zip size=7 KB
INFO: Analysis report uploaded in 344ms

But recently i had to do a sonar scanner to a extra large project which contain 4000-5000 LOC.

So the final report file size was 15 MB.

17:55:42.494 INFO: CPD calculation finished
17:55:53.602 INFO: Analysis report generated in 9560ms, dir size=33 MB
17:56:02.134 INFO: Analysis reports compressed in 8532ms, zip size=15 MB


When sonar try to upload the 15 MB file to the soar server im getting a HttpException error.
Bellow is the full error.


17:56:02.846 ERROR: Error during SonarQube Scanner execution
org.sonarqube.ws.client.HttpException: Error 500 on http://localhost:9000/api/ce/submit?projectKey=ClinicToCloudEMR&projectName=ClinicToCloudEMR : {"errors":[{"msg":"An error has occurred. Please contact your administrator"}]}
 at org.sonarqube.ws.client.BaseResponse.failIfNotSuccessful(BaseResponse.java:36)
 at org.sonar.scanner.bootstrap.ScannerWsClient.failIfUnauthorized(ScannerWsClient.java:106)
 at org.sonar.scanner.bootstrap.ScannerWsClient.call(ScannerWsClient.java:75)
 at org.sonar.scanner.report.ReportPublisher.upload(ReportPublisher.java:177)
 at org.sonar.scanner.report.ReportPublisher.execute(ReportPublisher.java:131)
 at org.sonar.scanner.phases.PublishPhaseExecutor.publishReportJob(PublishPhaseExecutor.java:72)
 at org.sonar.scanner.phases.PublishPhaseExecutor.executeOnRoot(PublishPhaseExecutor.java:54)
 at org.sonar.scanner.phases.AbstractPhaseExecutor.execute(AbstractPhaseExecutor.java:83)
 at org.sonar.scanner.scan.ModuleScanContainer.doAfterStart(ModuleScanContainer.java:175)
 at org.sonar.core.platform.ComponentContainer.startComponents(ComponentContainer.java:143)
 at org.sonar.core.platform.ComponentContainer.execute(ComponentContainer.java:128)
 at org.sonar.scanner.scan.ProjectScanContainer.scan(ProjectScanContainer.java:262)
 at org.sonar.scanner.scan.ProjectScanContainer.scanRecursively(ProjectScanContainer.java:257)
 at org.sonar.scanner.scan.ProjectScanContainer.doAfterStart(ProjectScanContainer.java:247)
 at org.sonar.core.platform.ComponentContainer.startComponents(ComponentContainer.java:143)
 at org.sonar.core.platform.ComponentContainer.execute(ComponentContainer.java:128)
 at org.sonar.scanner.task.ScanTask.execute(ScanTask.java:47)
 at org.sonar.scanner.task.TaskContainer.doAfterStart(TaskContainer.java:86)
 at org.sonar.core.platform.ComponentContainer.startComponents(ComponentContainer.java:143)
 at org.sonar.core.platform.ComponentContainer.execute(ComponentContainer.java:128)
 at org.sonar.scanner.bootstrap.GlobalContainer.executeTask(GlobalContainer.java:118)
 at org.sonar.batch.bootstrapper.Batch.executeTask(Batch.java:117)
 at org.sonarsource.scanner.api.internal.batch.BatchIsolatedLauncher.execute(BatchIsolatedLauncher.java:63)
 at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
 at sun.reflect.NativeMethodAccessorImpl.invoke(Unknown Source)
 at sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source)
 at java.lang.reflect.Method.invoke(Unknown Source)
 at org.sonarsource.scanner.api.internal.IsolatedLauncherProxy.invoke(IsolatedLauncherProxy.java:60)
 at com.sun.proxy.$Proxy0.execute(Unknown Source)
 at org.sonarsource.scanner.api.EmbeddedScanner.doExecute(EmbeddedScanner.java:233)
 at org.sonarsource.scanner.api.EmbeddedScanner.runAnalysis(EmbeddedScanner.java:151)
 at org.sonarsource.scanner.cli.Main.runAnalysis(Main.java:123)
 at org.sonarsource.scanner.cli.Main.execute(Main.java:77)
 at org.sonarsource.scanner.cli.Main.main(Main.java:61)
17:56:02.846 ERROR: 


There were no any clue on this error at the sonar log files which is inside the installation folder.

So after doing some RnDs i increase the max_allowed_packet to 512M at the Mysql My.config file.

This file is available at the C:\ProgramData\MySQL\MySQL Server 5.7.
But still im getting the same error.

So i do some changes to sonar.config file which is available at the sonar installation folder.
sonar.jdbc.url=jdbc:mysql://localhost:3306/sonar?useUnicode=true&characterEncoding=utf8&rewriteBatchedStatements=true&max_allowed_packet=512M 


I will attach the entire sonar.config file ,because i have done some more changes too.


Then the error went away.

# Property values can:
# - reference an environment variable, for example sonar.jdbc.url= ${env:SONAR_JDBC_URL}
# - be encrypted. See https://redirect.sonarsource.com/doc/settings-encryption.html

#--------------------------------------------------------------------------------------------------
# DATABASE
#
# IMPORTANT: the embedded H2 database is used by default. It is recommended for tests but not for
# production use. Supported databases are MySQL, Oracle, PostgreSQL and Microsoft SQLServer.

# User credentials.
# Permissions to create tables, indices and triggers must be granted to JDBC user.
# The schema must be created first.
sonar.jdbc.username=admin
sonar.jdbc.password=admin

#----- Embedded Database (default)
# H2 embedded database server listening port, defaults to 9092
#sonar.embeddedDatabase.port=9092
#----- MySQL 5.6 or greater
# Only InnoDB storage engine is supported (not myISAM).
# Only the bundled driver is supported. It can not be changed.
sonar.jdbc.url=jdbc:mysql://localhost:3306/sonar?useUnicode=true&characterEncoding=utf8&rewriteBatchedStatements=true&max_allowed_packet=512M


#----- Oracle 11g/12c
# - Only thin client is supported
# - Only versions 11.2.x and 12.x of Oracle JDBC driver are supported
# - The JDBC driver must be copied into the directory extensions/jdbc-driver/oracle/
# - If you need to set the schema, please refer to http://jira.sonarsource.com/browse/SONAR-5000
#sonar.jdbc.url=jdbc:oracle:thin:@localhost:1521/XE


#----- PostgreSQL 8.x/9.x
# If you don't use the schema named "public", please refer to http://jira.sonarsource.com/browse/SONAR-5000
#sonar.jdbc.url=jdbc:postgresql://localhost/sonar


#----- Microsoft SQLServer 2012/2014 and SQL Azure
# A database named sonar must exist and its collation must be case-sensitive (CS) and accent-sensitive (AS)
# Use the following connection string if you want to use integrated security with Microsoft Sql Server
# Do not set sonar.jdbc.username or sonar.jdbc.password property if you are using Integrated Security
# For Integrated Security to work, you have to download the Microsoft SQL JDBC driver package from
# http://www.microsoft.com/en-us/download/details.aspx?displaylang=en&id=11774
# and copy sqljdbc_auth.dll to your path. You have to copy the 32 bit or 64 bit version of the dll
# depending upon the architecture of your server machine.
# This version of SonarQube has been tested with Microsoft SQL JDBC version 4.1
#sonar.jdbc.url=jdbc:sqlserver://localhost;databaseName=sonar;integratedSecurity=true

# Use the following connection string if you want to use SQL Auth while connecting to MS Sql Server.
# Set the sonar.jdbc.username and sonar.jdbc.password appropriately.
#sonar.jdbc.url=jdbc:sqlserver://localhost;databaseName=sonar


#----- Connection pool settings
# The maximum number of active connections that can be allocated
# at the same time, or negative for no limit.
# The recommended value is 1.2 * max sizes of HTTP pools. For example if HTTP ports are
# enabled with default sizes (50, see property sonar.web.http.maxThreads)
# then sonar.jdbc.maxActive should be 1.2 * 50 = 60.
#sonar.jdbc.maxActive=60

# The maximum number of connections that can remain idle in the
# pool, without extra ones being released, or negative for no limit.
#sonar.jdbc.maxIdle=5

# The minimum number of connections that can remain idle in the pool,
# without extra ones being created, or zero to create none.
#sonar.jdbc.minIdle=2

# The maximum number of milliseconds that the pool will wait (when there
# are no available connections) for a connection to be returned before
# throwing an exception, or <= 0 to wait indefinitely.
sonar.jdbc.maxWait=5000

#sonar.jdbc.minEvictableIdleTimeMillis=600000
#sonar.jdbc.timeBetweenEvictionRunsMillis=30000



#--------------------------------------------------------------------------------------------------
# WEB SERVER
# Web server is executed in a dedicated Java process. By default heap size is 512Mb.
# Use the following property to customize JVM options.
#    Recommendations:
#
#    The HotSpot Server VM is recommended. The property -server should be added if server mode
#    is not enabled by default on your environment:
#    http://docs.oracle.com/javase/8/docs/technotes/guides/vm/server-class.html
#
#    Startup can be long if entropy source is short of entropy. Adding
#    -Djava.security.egd=file:/dev/./urandom is an option to resolve the problem.
#    See https://wiki.apache.org/tomcat/HowTo/FasterStartUp#Entropy_Source
#
#sonar.web.javaOpts=-Xmx512m -Xms128m -XX:+HeapDumpOnOutOfMemoryError

# Same as previous property, but allows to not repeat all other settings like -Xmx
#sonar.web.javaAdditionalOpts=

# Binding IP address. For servers with more than one IP address, this property specifies which
# address will be used for listening on the specified ports.
# By default, ports will be used on all IP addresses associated with the server.
#sonar.web.host=0.0.0.0

# Web context. When set, it must start with forward slash (for example /sonarqube).
# The default value is root context (empty value).
#sonar.web.context=
# TCP port for incoming HTTP connections. Default value is 9000.
#sonar.web.port=9000


# The maximum number of connections that the server will accept and process at any given time.
# When this number has been reached, the server will not accept any more connections until
# the number of connections falls below this value. The operating system may still accept connections
# based on the sonar.web.connections.acceptCount property. The default value is 50.
#sonar.web.http.maxThreads=50

# The minimum number of threads always kept running. The default value is 5.
#sonar.web.http.minThreads=5

# The maximum queue length for incoming connection requests when all possible request processing
# threads are in use. Any requests received when the queue is full will be refused.
# The default value is 25.
sonar.web.http.acceptCount=250

# By default users are logged out and sessions closed when server is restarted.
# If you prefer keeping user sessions open, a secret should be defined. Value is
# HS256 key encoded with base64. It must be unique for each installation of SonarQube.
# Example of command-line:
# echo -n "type_what_you_want" | openssl dgst -sha256 -hmac "key" -binary | base64
#sonar.auth.jwtBase64Hs256Secret=

# The inactivity timeout duration of user sessions, in minutes. After the configured
# period of time, the user is logged out.
# The default value is set to 3 days (4320 minutes)
# and cannot be greater than 3 months. Value must be strictly positive.
#sonar.web.sessionTimeoutInMinutes=4320


#--------------------------------------------------------------------------------------------------
# SSO AUTHENTICATION

# Enable authentication using HTTP headers
#sonar.web.sso.enable=false

# Name of the header to get the user login.
# Only alphanumeric, '.' and '@' characters are allowed
#sonar.web.sso.loginHeader=X-Forwarded-Login

# Name of the header to get the user name
#sonar.web.sso.nameHeader=X-Forwarded-Name

# Name of the header to get the user email (optional)
#sonar.web.sso.emailHeader=X-Forwarded-Email

# Name of the header to get the list of user groups, separated by comma (optional).
# If the sonar.sso.groupsHeader is set, the user will belong to those groups if groups exist in SonarQube.
# If none of the provided groups exists in SonarQube, the user won't belong to any group.
# Note that the default group will NOT be automatically added when using SSO, it should be provided in the groups list, if needed.
#sonar.web.sso.groupsHeader=X-Forwarded-Groups

# Interval used to know when to refresh name, email and groups.
# During this interval, if for instance the name of the user is changed in the header, it will only be updated after X minutes.
#sonar.web.sso.refreshIntervalInMinutes=5


#--------------------------------------------------------------------------------------------------
# COMPUTE ENGINE
# The Compute Engine is responsible for processing background tasks.
# Compute Engine is executed in a dedicated Java process. Default heap size is 512Mb.
# Use the following property to customize JVM options.
#    Recommendations:
#
#    The HotSpot Server VM is recommended. The property -server should be added if server mode
#    is not enabled by default on your environment:
#    http://docs.oracle.com/javase/8/docs/technotes/guides/vm/server-class.html
#
#sonar.ce.javaOpts=-Xmx512m -Xms128m -XX:+HeapDumpOnOutOfMemoryError

# Same as previous property, but allows to not repeat all other settings like -Xmx
#sonar.ce.javaAdditionalOpts=
# The number of workers in the Compute Engine. Value must be greater than zero.
# By default the Compute Engine uses a single worker and therefore processes tasks one at a time.
#    Recommendations:
#
#    Using N workers will require N times as much Heap memory (see property
#    sonar.ce.javaOpts to tune heap) and produce N times as much IOs on disk, database and
#    Elasticsearch. The number of workers must suit your environment.
#sonar.ce.workerCount=1


#--------------------------------------------------------------------------------------------------
# ELASTICSEARCH
# Elasticsearch is used to facilitate fast and accurate information retrieval.
# It is executed in a dedicated Java process. Default heap size is 1Gb.

# JVM options of Elasticsearch process
#    Recommendations:
#
#    Use HotSpot Server VM. The property -server should be added if server mode
#    is not enabled by default on your environment:
#    http://docs.oracle.com/javase/8/docs/technotes/guides/vm/server-class.html
#
#sonar.search.javaOpts=-Xmx1G -Xms256m -Xss256k -Djna.nosys=true \
#  -XX:+UseParNewGC -XX:+UseConcMarkSweepGC -XX:CMSInitiatingOccupancyFraction=75 \
#  -XX:+UseCMSInitiatingOccupancyOnly -XX:+HeapDumpOnOutOfMemoryError

# Same as previous property, but allows to not repeat all other settings like -Xmx
#sonar.search.javaAdditionalOpts=

# Elasticsearch port. Default is 9001. Use 0 to get a free port.
# As a security precaution, should be blocked by a firewall and not exposed to the Internet.
#sonar.search.port=9001

# Elasticsearch host. The search server will bind this address and the search client will connect to it.
# Default is 127.0.0.1.
# As a security precaution, should NOT be set to a publicly available address.
#sonar.search.host=127.0.0.1


#--------------------------------------------------------------------------------------------------
# UPDATE CENTER

# Update Center requires an internet connection to request https://update.sonarsource.org
# It is enabled by default.
#sonar.updatecenter.activate=true

# HTTP proxy (default none)
#http.proxyHost=
#http.proxyPort=
# HTTPS proxy (defaults are values of http.proxyHost and http.proxyPort)
#https.proxyHost=
#https.proxyPort=

# NT domain name if NTLM proxy is used
#http.auth.ntlm.domain=

# SOCKS proxy (default none)
#socksProxyHost=
#socksProxyPort=

# Proxy authentication (used for HTTP, HTTPS and SOCKS proxies)
#http.proxyUser=
#http.proxyPassword=


#--------------------------------------------------------------------------------------------------
# LOGGING

# SonarQube produces logs in 4 logs files located in the same directory (see property sonar.path.logs below),
# one per process:
#   Main process (aka. App) logs in sonar.log
#   Web Server (aka. Web) logs in web.log
#   Compute Engine (aka. CE) logs in ce.log
#   Elasticsearch (aka. ES) logs in es.log
#
# All 4 files follow the same rolling policy (see sonar.log.rollingPolicy and sonar.log.maxFiles) but it applies
# individually (eg. if sonar.log.maxFiles=4, there can be at most 4 of each files, ie. 16 files in total).
#
# All 4 files have logs in the same format:
#           1           2    3           4                       5                                                   6
# |-----------------| |---| |-|--------------------||------------------------------| |------------------------------------------------------------------------------------------------------------------------------|
# 2016.11.16 16:47:00 INFO  ce[AVht0dNXFcyiYejytc3m][o.s.s.c.t.CeWorkerCallableImpl] Executed task | project=org.sonarqube:example-java-maven | type=REPORT | id=AVht0dNXFcyiYejytc3m | submitter=admin | time=1699ms
#
# 1: timestamp. Format is YYYY.MM.DD HH:MM:SS
#    YYYY: year on 4 digits
#    MM: month on 2 digits
#    DD: day on 2 digits
#    HH: hour of day on 2 digits in 24 hours format
#    MM: minutes on 2 digits
#    SS: seconds on 2 digits
# 2: log level.
#    Possible values (in order of descending criticality): ERROR, WARN, INFO, DEBUG and TRACE
# 3: process identifier. Possible values: app (main), web (Web Server), ce (Compute Engine) and es (Elasticsearch)
# 4: SQ thread identifier. Can be empty.
#    In the Web Server, if present, it will be the HTTP request ID.
#    In the Compute Engine, if present, it will be the task ID.
# 5: logger name. Usually a class canonical name.
#    Package names are truncated to keep the whole field to 20 characters max
# 6: log payload. Content of this field does not follow any specific format, can vary in length and include line returns.
#    Some logs, however, will follow the convention to provide data in payload in the format " | key=value"
#    Especially, log of profiled pieces of code will end with " | time=XXXXms".

# Global level of logs (applies to all 4 processes).
# Supported values are INFO (default), DEBUG and TRACE
#sonar.log.level=INFO

# Level of logs of each process can be controlled individually with their respective properties.
# When specified, they overwrite the level defined at global level.
# Supported values are INFO, DEBUG and TRACE
#sonar.log.level.app=INFO
#sonar.log.level.web=INFO
#sonar.log.level.ce=INFO
#sonar.log.level.es=INFO

# Path to log files. Can be absolute or relative to installation directory.
# Default is <installation home>/logs
#sonar.path.logs=logs

# Rolling policy of log files
#    - based on time if value starts with "time:", for example by day ("time:yyyy-MM-dd")
#      or by month ("time:yyyy-MM")
#    - based on size if value starts with "size:", for example "size:10MB"
#    - disabled if value is "none".  That needs logs to be managed by an external system like logrotate.
#sonar.log.rollingPolicy=time:yyyy-MM-dd

# Maximum number of files to keep if a rolling policy is enabled.
#    - maximum value is 20 on size rolling policy
#    - unlimited on time rolling policy. Set to zero to disable old file purging.
sonar.log.maxFiles=20

# Access log is the list of all the HTTP requests received by server. If enabled, it is stored
# in the file {sonar.path.logs}/access.log. This file follows the same rolling policy as other log file
# (see sonar.log.rollingPolicy and sonar.log.maxFiles).
#sonar.web.accessLogs.enable=true

# Format of access log. It is ignored if sonar.web.accessLogs.enable=false. Possible values are:
#    - "common" is the Common Log Format, shortcut to: %h %l %u %user %date "%r" %s %b
#    - "combined" is another format widely recognized, shortcut to: %h %l %u [%t] "%r" %s %b "%i{Referer}" "%i{User-Agent}"
#    - else a custom pattern. See http://logback.qos.ch/manual/layouts.html#AccessPatternLayout.
# The login of authenticated user is not implemented with "%u" but with "%reqAttribute{LOGIN}" (since version 6.1).
# The value displayed for anonymous users is "-".
# The SonarQube's HTTP request ID can be added to the pattern with "%reqAttribute{ID}" (since version 6.2).
# If SonarQube is behind a reverse proxy, then the following value allows to display the correct remote IP address:
#sonar.web.accessLogs.pattern=%i{X-Forwarded-For} %l %u [%t] "%r" %s %b "%i{Referer}" "%i{User-Agent}" "%reqAttribute{ID}"
# Default value (which was "combined" before version 6.2) is equivalent to "combined + SQ HTTP request ID":
#sonar.web.accessLogs.pattern=%h %l %u [%t] "%r" %s %b "%i{Referer}" "%i{User-Agent}" "%reqAttribute{ID}"


#--------------------------------------------------------------------------------------------------
# OTHERS

# Delay in seconds between processing of notification queue. Default is 60 seconds.
#sonar.notifications.delay=60

# Paths to persistent data files (embedded database and search index) and temporary files.
# Can be absolute or relative to installation directory.
# Defaults are respectively <installation home>/data and <installation home>/temp
#sonar.path.data=data
#sonar.path.temp=temp


#--------------------------------------------------------------------------------------------------
# DEVELOPMENT - only for developers
# The following properties MUST NOT be used in production environments.

# Dev mode allows to reload web sources on changes and to restart server when new versions
# of plugins are deployed.
#sonar.web.dev=false

# Elasticsearch HTTP connector, for example for KOPF:
# http://lmenezes.com/elasticsearch-kopf/?location=http://localhost:9010
#sonar.search.httpPort=-1

Testing web applications in 64 bit internet explorer is only supported on internet explorer 10 or later -CodedUI

Testing web applications in 64 bit internet explorer is only supported on internet explorer 10 or later.

This was the stupid error which o got when im ruing my codedUI dll on a remote VM.

I used to develop UI scripts from my Lap top which is ruining on windows 10 on a 64 bit chip set.
When i do the deployment i get the DLL file and other related files which are relevant to the DLL , bundle all and placeit on a proper place at the Test server.
In this case the QA server was a windows 7 64 bit VM.

When i try to execute my DLL using MS test i got this error.

Testing web applications in 64 bit internet explorer is only supported on internet explorer 10 or later.

IE explorer was IE 11 so no issues with that.
VM also it says it 64 bit server.

My only suspicious thing was when i open IE ,i saw there are 2 processors ruining at the Task manager.Which are IExexplorer.exe and IExexplorer32*.exe

I was googling for 2 days but could nt foind any proper solution.

Then i change the build platform of my DLL 64 bit to x86.

1. Right click on the project
2. Select property.
3. Select Builds.
4. Then select Activity (x86) from the platform drop down menu.
5. Now build the project.
6. Navigate to project using file explorer and you could now see a New folder named x86 available inside the in folder.

I then get the DLL inside the x86 folder an dyploy it to my QA server and it start work fine.
Error message gone.

Over come with StaleElementException at selenium

My original problem was ,
I was trying to extract some web element list from a IList  item and try to use those IList items inside a foreach loop.

Inside the foreach loop I navigate to another page. After that, when iterating again in the foreach loop, it gives me an exception.

This is how my code looks like.

IWebElement table = driver.FindElement(By.ClassName("mozaique"));
IList<IWebElement> list = table.FindElements(By.ClassName("thumb-block "));

foreach (var item in list)
{
    item.Click();
    driver.FindElement(By.CssSelector("span.icon.download")).Click();
    waitforDWNlink();
    driver.Navigate().Back();
    driver.Navigate().GoToUrl(URL);
}

My solution was ,
I extract the HREF / URL from the each item at the IList  and store them at a string type array.

After that i use that HREF url to navigate to the relavant web page using 
driver.Navigate().GoToUrl().

IWebElement table = driver.FindElement(By.ClassName("mozaique"));
IList<IWebElement> list = table.FindElements(By.TagName("a"));
               
       string[] URL1 = new string[list.Count];
                
       int i = 0;
       foreach (var item in list)
                {
                 URL1[i] = list[i].GetAttribute("href").ToString();
                 i++;

                }

Hard part was converting IWebElement type list to string type array which is done at the highlighted lines.