I am trying to work with solr-cloud and I have to use learning to rank models and features for my project. But I am facing this issue of SolrCore Initialization Failures
techproducts_shard1_replica_n2: org.apache.solr.common.SolrException:org.apache.solr.common.SolrException: Failed to create new ManagedResource /schema/model-store of type org.apache.solr.ltr.store.rest.ManagedModelStore due to: org.apache.solr.common.SolrException: org.apache.solr.ltr.model.ModelException: Model type does not exist org.apache.solr.ltr.model.LinearModel
techproducts_shard2_replica_n6: org.apache.solr.common.SolrException:org.apache.solr.common.SolrException: Failed to create new ManagedResource /schema/model-store of type org.apache.solr.ltr.store.rest.ManagedModelStore due to: org.apache.solr.common.SolrException: org.apache.solr.ltr.model.ModelException: Model type does not exist org.apache.solr.ltr.model.LinearModel
Please check your logs for more information
These are the solr logs:-
**2019-12-04 12:44:05.760 ERROR (searcherExecutor-15-thread-1-processing-n:192.168.137.1:8983_solr x:techproducts_shard1_replica_n2 c:techproducts s:shard1 r:core_node5) [c:techproducts s:shard1 r:core_node5 x:techproducts_shard1_replica_n2] o.a.s.h.RequestHandlerBase java.lang.NullPointerException
at org.apache.solr.handler.component.SearchHandler.initComponents(SearchHandler.java:183)
at org.apache.solr.handler.component.SearchHandler.getComponents(SearchHandler.java:203)
at org.apache.solr.handler.component.SearchHandler.handleRequestBody(SearchHandler.java:260)
at org.apache.solr.handler.RequestHandlerBase.handleRequest(RequestHandlerBase.java:199)
at org.apache.solr.core.SolrCore.execute(SolrCore.java:2578)
at org.apache.solr.core.QuerySenderListener.newSearcher(QuerySenderListener.java:74)
at org.apache.solr.core.SolrCore.lambda$getSearcher$18(SolrCore.java:2344)
at java.util.concurrent.FutureTask.run(FutureTask.java:266)
at org.apache.solr.common.util.ExecutorUtil$MDCAwareThreadPoolExecutor.lambda$execute$0(ExecutorUtil.java:209)
at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149)
at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624)
at java.lang.Thread.run(Thread.java:748)
2019-12-04 12:44:05.760 ERROR (searcherExecutor-14-thread-1-processing-n:192.168.137.1:8983_solr x:techproducts_shard2_replica_n6 c:techproducts s:shard2 r:core_node8) [c:techproducts s:shard2 r:core_node8 x:techproducts_shard2_replica_n6] o.a.s.h.RequestHandlerBase java.lang.NullPointerException
at org.apache.solr.handler.component.SearchHandler.initComponents(SearchHandler.java:183)
at org.apache.solr.handler.component.SearchHandler.getComponents(SearchHandler.java:203)
at org.apache.solr.handler.component.SearchHandler.handleRequestBody(SearchHandler.java:260)
at org.apache.solr.handler.RequestHandlerBase.handleRequest(RequestHandlerBase.java:199)
at org.apache.solr.core.SolrCore.execute(SolrCore.java:2578)
at org.apache.solr.core.QuerySenderListener.newSearcher(QuerySenderListener.java:74)
at org.apache.solr.core.SolrCore.lambda$getSearcher$18(SolrCore.java:2344)
at java.util.concurrent.FutureTask.run(FutureTask.java:266)
at org.apache.solr.common.util.ExecutorUtil$MDCAwareThreadPoolExecutor.lambda$execute$0(ExecutorUtil.java:209)
at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149)
at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624)
at java.lang.Thread.run(Thread.java:748)
Match the compatibility of Solr version and zookeeper....
For Solr 8.2.0 use zookepeer 3.5.6
Problem
I'm trying to install the camel feature camel-swagger-java 2.22.2 in a karaf 4.2.2 environment.
I added the feature camel-swagger-java to featuresBoot property in the config file etc/org.apache.karaf.features.cfg of karaf because I want that this feature is installed when karaf is up.
When I launch bin/karaf I get this error:
org.apache.karaf.features.internal.util.MultiException: Error:
Error downloading wrap:file:/C:/Users/karaf/.m2/repository/io/swagger/swagger-parser/1.0.36/swagger-parser-1.0.36.jar
Error downloading wrap:file:/C:/Users/karaf/.m2/repository/io/swagger/swagger-parser/1.0.36/swagger-parser-1.0.36.jar
at org.apache.karaf.features.internal.download.impl.MavenDownloadManager$MavenDownloader.(MavenDownloadManager.java:91)
at org.apache.karaf.features.internal.download.impl.MavenDownloadManager.createDownloader(MavenDownloadManager.java:72)
at org.apache.karaf.features.internal.region.Subsystem.downloadBundles(Subsystem.java:457)
at org.apache.karaf.features.internal.region.Subsystem.downloadBundles(Subsystem.java:452)
at org.apache.karaf.features.internal.region.SubsystemResolver.resolve(SubsystemResolver.java:224)
at org.apache.karaf.features.internal.service.Deployer.deploy(Deployer.java:388)
at org.apache.karaf.features.internal.service.FeaturesServiceImpl.doProvision(FeaturesServiceImpl.java:1025)
at org.apache.karaf.features.internal.service.FeaturesServiceImpl.lambda$doProvisionInThread$13(FeaturesServiceImpl.java:964)
at java.util.concurrent.FutureTask.run(FutureTask.java:266)
at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149)
at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624)
at java.lang.Thread.run(Thread.java:748)
Suppressed: java.io.IOException: Error downloading wrap:file:/C:/Users/karaf/.m2/repository/io/swagger/swagger-parser/1.0.36/swagger-parser-1.0.36.jar
at org.apache.karaf.features.internal.download.impl.AbstractRetryableDownloadTask.run(AbstractRetryableDownloadTask.java:77)
at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511)
at java.util.concurrent.FutureTask.run(FutureTask.java:266)
at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$201(ScheduledThreadPoolExecutor.java:180)
at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:293)
... 3 more
Caused by: java.io.IOException: Could not download [wrap:file:/C:/Users/karaf/.m2/repository/io/swagger/swagger-parser/1.0.36/swagger-parser-1.0.36.jar]
at org.apache.karaf.features.internal.download.impl.SimpleDownloadTask.download(SimpleDownloadTask.java:91)
at org.apache.karaf.features.internal.download.impl.AbstractRetryableDownloadTask.run(AbstractRetryableDownloadTask.java:60)
... 7 more
Caused by: java.net.MalformedURLException: Unknown protocol: wrap
at java.net.URL.(URL.java:627)
at java.net.URL.(URL.java:490)
at java.net.URL.(URL.java:439)
at org.apache.karaf.features.internal.download.impl.SimpleDownloadTask.download(SimpleDownloadTask.java:62)
... 8 more
Caused by: java.lang.IllegalStateException: Unknown protocol: wrap
at org.apache.felix.framework.URLHandlersStreamHandlerProxy.parseURL(URLHandlersStreamHandlerProxy.java:373)
at java.net.URL.(URL.java:622)
... 11 more
[CIRCULAR REFERENCE:java.io.IOException: Error downloading wrap:file:/C:/Users/karaf/.m2/repository/io/swagger/swagger-parser/1.0.36/swagger-parser-1.0.36.jar
Code
These are the first lines of my etc/org.apache.karaf.features.cfg
featuresRepositories mvn:org.apache.karaf.features/enterprise/4.2.2/xml/features, mvn:org.apache.karaf.features/spring/4.2.2/xml/features, mvn:org.apache.karaf.features/standard/4.2.2/xml/features, mvn:org.apache.karaf.features/framework/4.2.2/xml/features, mvn:org.apache.camel.karaf/apache-camel/2.22.2/xml/features, mvn:org.apache.karaf.decanter/apache-karaf-decanter/2.1.0/xml/features, mvn:org.ops4j.pax.jdbc/pax-jdbc-features/1.3.2/xml/features, mvn:org.apache.servicemix.features/servicemix-features/7.0.1/xml/features
featuresBoot = instance/4.2.2, package/4.2.2, log/4.2.2, ssh/4.2.2, framework/4.2.2, system/4.2.2, eventadmin/4.2.2, feature/4.2.2, shell/4.2.2, management/4.2.2, service/4.2.2, jaas/4.2.2, deployer/4.2.2, diagnostic/4.2.2, wrap/2.5.4, bundle/4.2.2, config/4.2.2, kar/4.2.2, webconsole/4.2.2, jdbc/4.2.2, http/4.2.2, jetty/4.2.2, camel/2.22.2, camel-core/2.22.2, camel-blueprint/2.22.2, camel-spring/2.22.2, camel-jetty/2.22.2, camel-netty/2.22.2, camel-netty-http/2.22.2, camel-netty4/2.22.2, camel-netty4-http/2.22.2, camel-http4/2.22.2, camel-jackson/2.22.2, camel-sql/2.22.2, camel-jdbc/2.22.2, camel-quartz/2.22.2, camel-jacksonxml/2.22.2, camel-swagger-java/2.22.2, decanter-appender-elasticsearch-rest/2.1.0, decanter-collector-log/2.1.0, pax-jdbc-mariadb/1.3.2, pax-jdbc-mysql/1.3.2, pax-jdbc-config/1.3.2
Question
Why I get this error? It's a bug of camel-swagger-java feature or I'm missing something?
i have add the jcommon and jfreechart in my netbeans libraries. i also have cleared the netbeans cache. but this error still coming out when i try to run the file. If anyone know the solution please let me know!! thx..below is the full error:
Exception in thread "AWT-EventQueue-0" java.lang.ExceptionInInitializerError
at org.jfree.chart.JFreeChart.<clinit>(JFreeChart.java:282)
at org.jfree.chart.ChartFactory.createBarChart(ChartFactory.java:923)
at com.graph.jButton1ActionPerformed(graph.java:126)
at com.graph.access$000(graph.java:22)
at com.graph$1.actionPerformed(graph.java:63)
at javax.swing.AbstractButton.fireActionPerformed(AbstractButton.java:2018)
at javax.swing.AbstractButton$Handler.actionPerformed(AbstractButton.java:2341)
at javax.swing.DefaultButtonModel.fireActionPerformed(DefaultButtonModel.java:402)
at javax.swing.DefaultButtonModel.setPressed(DefaultButtonModel.java:259)
at javax.swing.plaf.basic.BasicButtonListener.mouseReleased(BasicButtonListener.java:252)
at java.awt.Component.processMouseEvent(Component.java:6505)
at javax.swing.JComponent.processMouseEvent(JComponent.java:3320)
at java.awt.Component.processEvent(Component.java:6270)
at java.awt.Container.processEvent(Container.java:2229)
at java.awt.Component.dispatchEventImpl(Component.java:4861)
at java.awt.Container.dispatchEventImpl(Container.java:2287)
at java.awt.Component.dispatchEvent(Component.java:4687)
at java.awt.LightweightDispatcher.retargetMouseEvent(Container.java:4832)
at java.awt.LightweightDispatcher.processMouseEvent(Container.java:4492)
at java.awt.LightweightDispatcher.dispatchEvent(Container.java:4422)
at java.awt.Container.dispatchEventImpl(Container.java:2273)
at java.awt.Window.dispatchEventImpl(Window.java:2719)
at java.awt.Component.dispatchEvent(Component.java:4687)
at java.awt.EventQueue.dispatchEventImpl(EventQueue.java:735)
at java.awt.EventQueue.access$200(EventQueue.java:103)
at java.awt.EventQueue$3.run(EventQueue.java:694)
at java.awt.EventQueue$3.run(EventQueue.java:692)
at java.security.AccessController.doPrivileged(Native Method)
at java.security.ProtectionDomain$1.doIntersectionPrivilege(ProtectionDomain.java:76)
at java.security.ProtectionDomain$1.doIntersectionPrivilege(ProtectionDomain.java:87)
at java.awt.EventQueue$4.run(EventQueue.java:708)
at java.awt.EventQueue$4.run(EventQueue.java:706)
at java.security.AccessController.doPrivileged(Native Method)
at java.security.ProtectionDomain$1.doIntersectionPrivilege(ProtectionDomain.java:76)
at java.awt.EventQueue.dispatchEvent(EventQueue.java:705)
at java.awt.EventDispatchThread.pumpOneEventForFilters(EventDispatchThread.java:242)
at java.awt.EventDispatchThread.pumpEventsForFilter(EventDispatchThread.java:161)
at java.awt.EventDispatchThread.pumpEventsForHierarchy(EventDispatchThread.java:150)
at java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:146)
at java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:138)
at java.awt.EventDispatchThread.run(EventDispatchThread.java:91)
Caused by: java.lang.RuntimeException: Uncompilable source code - cannot find symbol
symbol: class JCommon
location: package org.jfree
at org.jfree.chart.JFreeChart$1.<clinit>(JFreeChart.java:188)
I am using SymmetricDS and i have stumbled across a problem on one of my clients.
Log says:
2015-11-11 09:10:57,688 ERROR [blagajna_XXX] [RouterService] [blagajna_XXX-job-17] Failed to route and batch data on 'cFpromet' channel
java.lang.NullPointerException
There is no further explanation for null pointer exception, so i can't debug it myself. Replication itself works for some time and then this error appears and replication stops working. Identical system works without any problems.
select * from sym_outgoing_batch where error_flag=1; returns 0 rows, so how can i debug this problem?
GregaJ
EDIT:
java.lang.NullPointerException
at org.jumpmind.db.platform.AbstractJdbcDdlReader.getTableNamePattern(AbstractJdbcDdlReader.java:638)
at org.jumpmind.db.platform.AbstractJdbcDdlReader$3.execute(AbstractJdbcDdlReader.java:574)
at org.jumpmind.db.platform.AbstractJdbcDdlReader$3.execute(AbstractJdbcDdlReader.java:563)
at org.jumpmind.db.sql.JdbcSqlTemplate.execute(JdbcSqlTemplate.java:432)
at org.jumpmind.db.platform.AbstractJdbcDdlReader.readTable(AbstractJdbcDdlReader.java:563)
at org.jumpmind.db.platform.AbstractDatabasePlatform.readTableFromDatabase(AbstractDatabasePlatform.java:239)
at org.jumpmind.db.platform.AbstractDatabasePlatform.getTableFromCache(AbstractDatabasePlatform.java:314)
at org.jumpmind.symmetric.db.AbstractSymmetricDialect.getTable(AbstractSymmetricDialect.java:377)
at org.jumpmind.symmetric.service.impl.RouterService.routeData(RouterService.java:689)
at org.jumpmind.symmetric.service.impl.RouterService.selectDataAndRoute(RouterService.java:634)
at org.jumpmind.symmetric.service.impl.RouterService.routeDataForChannel(RouterService.java:436)
at org.jumpmind.symmetric.service.impl.RouterService.routeDataForEachChannel(RouterService.java:328)
at org.jumpmind.symmetric.service.impl.RouterService.routeData(RouterService.java:175)
at org.jumpmind.symmetric.job.RouterJob.doJob(RouterJob.java:40)
at org.jumpmind.symmetric.job.AbstractJob.invoke(AbstractJob.java:180)
at org.jumpmind.symmetric.job.AbstractJob.run(AbstractJob.java:224)
at org.springframework.scheduling.support.DelegatingErrorHandlingRunnable.run(DelegatingErrorHandlingRunnable.java:54)
at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511)
at java.util.concurrent.FutureTask.runAndReset(FutureTask.java:308)
at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$301(ScheduledThreadPoolExecutor.java:180)
at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:294)
at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1142)
at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617)
at java.lang.Thread.run(Thread.java:745)
I just trying to start a webdrivertest at Jmeter with the plugins Extras, Hadoop, ExtraLibs and Webdriver. (all 1.3.0)
When I'm trying to start the script following error appears:
Chrome + IE :
jmeter.threads.JMeterThread: Test failed! java.lang.NoClassDefFoundError: Could not initialize class org.apache.http.conn.ssl.SSLConnectionSocketFactory
at org.openqa.selenium.remote.internal.HttpClientFactory.getClientConnectionManager(HttpClientFactory.java:68)
at org.openqa.selenium.remote.internal.HttpClientFactory.<init>(HttpClientFactory.java:56)
at org.openqa.selenium.remote.internal.HttpClientFactory.<init>(HttpClientFactory.java:60)
at org.openqa.selenium.remote.internal.ApacheHttpClient$Factory.getDefaultHttpClientFactory(ApacheHttpClient.java:251)
at org.openqa.selenium.remote.internal.ApacheHttpClient$Factory.<init>(ApacheHttpClient.java:228)
at org.openqa.selenium.remote.HttpCommandExecutor.getDefaultClientFactory(HttpCommandExecutor.java:89)
at org.openqa.selenium.remote.HttpCommandExecutor.<init>(HttpCommandExecutor.java:63)
at org.openqa.selenium.remote.HttpCommandExecutor.<init>(HttpCommandExecutor.java:58)
at org.openqa.selenium.remote.service.DriverCommandExecutor.<init>(DriverCommandExecutor.java:47)
at org.openqa.selenium.chrome.ChromeDriver.<init>(ChromeDriver.java:170)
at com.googlecode.jmeter.plugins.webdriver.config.ChromeDriverConfig.createBrowser(ChromeDriverConfig.java:61)
at com.googlecode.jmeter.plugins.webdriver.config.ChromeDriverConfig.createBrowser(ChromeDriverConfig.java:21)
at com.googlecode.jmeter.plugins.webdriver.config.WebDriverConfig.getPreparedBrowser(WebDriverConfig.java:233)
at com.googlecode.jmeter.plugins.webdriver.config.WebDriverConfig.threadStarted(WebDriverConfig.java:220)
at org.apache.jmeter.threads.JMeterThread$ThreadListenerTraverser.addNode(JMeterThread.java:610)
at org.apache.jorphan.collections.HashTree.traverseInto(HashTree.java:998)
at org.apache.jorphan.collections.HashTree.traverse(HashTree.java:980)
at org.apache.jmeter.threads.JMeterThread.threadStarted(JMeterThread.java:579)
at org.apache.jmeter.threads.JMeterThread.initRun(JMeterThread.java:567)
at org.apache.jmeter.threads.JMeterThread.run(JMeterThread.java:257)
at java.lang.Thread.run(Unknown Source)
jmeter.JMeter: Uncaught exception: java.lang.NoClassDefFoundError: org/openqa/selenium/os/Kernel32
at org.openqa.selenium.os.ProcessUtils.killWinProcess(ProcessUtils.java:133)
at org.openqa.selenium.os.ProcessUtils.killProcess(ProcessUtils.java:81)
at org.openqa.selenium.os.UnixProcess$SeleniumWatchDog.destroyHarder(UnixProcess.java:248)
at org.openqa.selenium.os.UnixProcess$SeleniumWatchDog.access$200(UnixProcess.java:200)
at org.openqa.selenium.os.UnixProcess.destroy(UnixProcess.java:124)
at org.openqa.selenium.os.CommandLine.destroy(CommandLine.java:153)
at org.openqa.selenium.remote.service.DriverService.stop(DriverService.java:190)
at com.googlecode.jmeter.plugins.webdriver.config.ChromeDriverConfig.quitBrowser(ChromeDriverConfig.java:69)
at com.googlecode.jmeter.plugins.webdriver.config.ChromeDriverConfig.quitBrowser(ChromeDriverConfig.java:21)
at com.googlecode.jmeter.plugins.webdriver.config.WebDriverConfig.threadFinished(WebDriverConfig.java:244)
at org.apache.jmeter.threads.JMeterThread$ThreadListenerTraverser.addNode(JMeterThread.java:612)
at org.apache.jorphan.collections.HashTree.traverseInto(HashTree.java:998)
at org.apache.jorphan.collections.HashTree.traverse(HashTree.java:980)
at org.apache.jmeter.threads.JMeterThread.threadFinished(JMeterThread.java:584)
at org.apache.jmeter.threads.JMeterThread.run(JMeterThread.java:315)
at java.lang.Thread.run(Unknown Source)
Firefox :
jmeter.threads.JMeterThread: Test failed! java.lang.NoClassDefFoundError: Could not initialize class org.apache.http.conn.ssl.SSLConnectionSocketFactory
at org.openqa.selenium.remote.internal.HttpClientFactory.getClientConnectionManager(HttpClientFactory.java:68)
at org.openqa.selenium.remote.internal.HttpClientFactory.<init>(HttpClientFactory.java:56)
at org.openqa.selenium.remote.internal.HttpClientFactory.<init>(HttpClientFactory.java:60)
at org.openqa.selenium.remote.internal.ApacheHttpClient$Factory.getDefaultHttpClientFactory(ApacheHttpClient.java:251)
at org.openqa.selenium.remote.internal.ApacheHttpClient$Factory.<init>(ApacheHttpClient.java:228)
at org.openqa.selenium.remote.HttpCommandExecutor.getDefaultClientFactory(HttpCommandExecutor.java:89)
at org.openqa.selenium.remote.HttpCommandExecutor.<init>(HttpCommandExecutor.java:63)
at org.openqa.selenium.remote.HttpCommandExecutor.<init>(HttpCommandExecutor.java:58)
at org.openqa.selenium.firefox.internal.NewProfileExtensionConnection.start(NewProfileExtensionConnection.java:95)
at org.openqa.selenium.firefox.FirefoxDriver.startClient(FirefoxDriver.java:275)
at org.openqa.selenium.remote.RemoteWebDriver.<init>(RemoteWebDriver.java:116)
at org.openqa.selenium.firefox.FirefoxDriver.<init>(FirefoxDriver.java:220)
at org.openqa.selenium.firefox.FirefoxDriver.<init>(FirefoxDriver.java:215)
at com.googlecode.jmeter.plugins.webdriver.config.FirefoxDriverConfig.createBrowser(FirefoxDriverConfig.java:95)
at com.googlecode.jmeter.plugins.webdriver.config.FirefoxDriverConfig.createBrowser(FirefoxDriverConfig.java:21)
at com.googlecode.jmeter.plugins.webdriver.config.WebDriverConfig.getPreparedBrowser(WebDriverConfig.java:233)
at com.googlecode.jmeter.plugins.webdriver.config.WebDriverConfig.threadStarted(WebDriverConfig.java:220)
at org.apache.jmeter.threads.JMeterThread$ThreadListenerTraverser.addNode(JMeterThread.java:610)
at org.apache.jorphan.collections.HashTree.traverseInto(HashTree.java:998)
at org.apache.jorphan.collections.HashTree.traverse(HashTree.java:980)
at org.apache.jmeter.threads.JMeterThread.threadStarted(JMeterThread.java:579)
at org.apache.jmeter.threads.JMeterThread.initRun(JMeterThread.java:567)
at org.apache.jmeter.threads.JMeterThread.run(JMeterThread.java:257)
at java.lang.Thread.run(Unknown Source)
Apache JMeter Version 2.13
Java 1.8.0.45
I also used Jmeter 2.13 with the same plugins (1.2.1) and it works perfectly. But for testing I need the 1.3 plugins.
Does anybody use Jmeter with plugins 1.3 and got the same error?
You have an issue in the fact that you have different versions of same JAR in lib :
httpclient-4.2.6.jar
httpclient-4.5.jar
httpcore-4.2.5.jar
httpcore-4.4.1.jar
httpmime-4.2.6.jar
httpmime-4.5.jar
You need to keep the most up to date version of each not both.
See a full tutorial on this at:
http://www.ubik-ingenierie.com/blog/leverage-your-load-testing-using-jmeter-and-selenium-webdriver/
jmeter.JMeter:
Uncaught exception: java.lang.NoClassDefFoundError:
org/openqa/selenium/os/Kernel32
To fix the above error, download JNA jar it with its dependency here:
http://www.java2s.com/Code/Jar/j/Downloadjna330platformjar.htm
http://www.java2s.com/Code/Jar/j/Downloadjna330jar.htm
And put it in lib folder.