我见过很多问题问一些类似于我所问的东西，但出于某种原因，它不适合我。我使用的是jmeter3.3应用程序（目前是最新的），所以这个建议在jmeter的最新版本上可能不起作用。
我试图用jmeter创建一个测试计划来测试我的db。

Database URL: jdbc:impala://server.domain.com:21050/default;auth=noSasl 
JDBC Driver class: com.cloudera.impala.core.ImpalaJDBCDriver

一个答案/建议是将jar（在我的例子中是impalajdbc4.jar）复制到lib dir，然后重新启动jmeter，我做到了。我也把它放在lib/ext目录中。不过，这对我来说还是不管用。我在jmeter.log中不断遇到同样的错误：

Uncaught Exception java.lang.NoClassDefFoundError: Could not initialize class com.cloudera.impala.core.ImpalaJDBCDriver. See log file for details.

不确定路径是否重要，但我从以下位置运行jmeter：

$ ~/tmp/apache-jmeter-3.3> bin/jmeter
   and from
$ ~/tmp/apache-jmeter-3.3/bin> jmeter

有什么我不知道的吗？我把它放错地方了吗？我知道驱动程序类在那里，因为我检查了jar文件的内容：

jar tvf ImpalaJDBC4.jar | less

2680 Thu Jan 04 08:11:12 PST 2018 com/cloudera/impala/core/ImpalaJDBCDriver.class

事先谢谢你的帮助。我厌倦了把头撞在墙上。
这是日志。我试图消毒，所以请忽略任何可能不正确的做我的消毒。
2018-02-05 17:14:05321 info o.a.j.u.jmeterutils:将locale设置为en琰u us 2018-02-05 17:14:05331 info o.a.j.jmeter:加载用户属性来自：/users/first.last/tmp/apache-jmeter-3.3/bin/user.properties 2018-02-05 17:14:05，332信息O.A.J.JMe:加载系统属性从：/LST/TMP/APCHACE-JMEDER 3.3/BIN／St.属性2018－02-05 17:14:05336信息O.A.J.JMe:版权所有（C）1998至2017 Apache软件基金会2018－02-05 17:14:05336信息O.A.J.JMe:版本3.3 R1808672018－02-05 17:14:05336 info o.a.j.jmeter:java.version=1.8.0\u 162 2018-02-05 17:14:05336 info o.a.j.jmeter:java.vm.name=java hotspot（tm）64位服务器vm 2018-02-05 17:14:05336 info o.a.j.jmeter:os.name=mac os x 2018-02-05 17:14:05336 info o.a.j.jmeter:os.arch=x86\u 64 2018-02-05 17:14:05337 info o.a.j.jmeter:os.version=10.12.6 2018-02-05 17:14:05，337 info o.a.j.jmeter:file.encoding=utf-8 2018-02-05 17:14:05337 info o.a.j.jmeter:max memory=536870912 2018-02-05 17:14:05337 info o.a.j.jmeter:available processors=8 2018-02-05 17:14:05340 info o.a.j.jmeter:default locale=english（美国）2018-02-05 17:14:05，340 info o.a.j.jmeter:jmeter locale=english（美国）2018-02-05 17:14:05340 info o.a.j.jmeter:jmeterhome=/users/first.last/tmp/apache-jmeter-3.3 2018-02-05 17:14:05340 info o.a.j.jmeter:user.dir=/users/first.last/tmp/apache-jmeter-3.3 2018-02-05 17:14:05，341 info o.a.j.jmeter:pwd=/users/first.last/tmp/apache-jmeter-3.3 2018-02-05 17:14:05342 info o.a.j.jmeter:ip:127.0.0.1 name:msjcit1050435全名：localhost 2018-02-05 17:14:06930 info o.a.j.g.a.lookandfeel命令：使用look and feel:com.apple.laf.aqualookandfeel[mac os x，system]2018-02-05 17:14:06，935 info o.a.j.jmeter:已从org/apache/jmeter/images/icon.properties 2018-02-05 17:14:07722 info o.a.j.e.u.compoundvariable加载图标属性：注意：函数类名称必须包含字符串：“.functions.”2018-02-05 17:14:07，722 info o.a.j.e.u.compoundvariable:注意：函数类名不能包含字符串：'.gui'。2018-02-05 17:14:08320警告o.j.r.pluginmanager:发现jar冲突：/users/first.last/tmp/apache-jmeter-3.3/lib/ext/impalajdbc4.jar和/users/first.last/tmp/apache-jmeter-3.3/lib/impalajdbc4.jar 2018-02-05 17:14:09，830 info o.j.r.pluginmanager:插件状态：[jpgc graphs basic=2.0，jpgc functions=2.0，jpgc casutg=2.5，jpgc dummy=0.2，jpgc ffw=2.0，jpgc fifo=0.2，jpgc perfmon=2.1，jpgc plugins manager=0.19，jpgc webdriver=2.3，jpgc tst=2.1，webs ocket sampler=1.2-snapshot，websocket samplers=1.1，jmeter core=3.3，jmeter ftp=3.3，jmeter http=3，jmeter jdbc=3.3，jmeter jms=3.3，jmeter junit=3.3，jmeter java=3.3，jmeter ldap=3.3，jmeter mail=3.3，jmeter mongodb=3.3，jmeter native=3.3，jmeter tcp=3.3，jmeter components=3.3，jpgc standard=2.0]2018-02-05 17:14:09863 info o.a.j.g.u.menufactory:skipping org.apache.jmeter.assertions.bsfassertion 2018-02-05 17:14:09，964 info o.a.j.g.u.menufactory:跳过org.apache.jmeter.extractor.bsfpostprocessor 2018-02-05 17:14:09987 info o.a.j.g.u.menufactory:跳过org.apache.jmeter.modifiers.bsfpreprocessor 2018-02-05 17:14:10，013 info o.a.j.p.h.s.httpsamplerbase:parser for text/html为org.apache.jmeter.protocol.http.parser.lagartobasedhtmlparser 2018-02-05 17:14:10013 info o.a.j.p.h.s.httpsamplerbase:parser for application/xhtml+xml为org.apache.jmeter.protocol.http.parser.lagartobasedhtmlparser 2018-02-05 17:14:10，013 info o.a.j.p.h.s.httpsamplerbase:parser for application/xml is org.apache.jmeter.protocol.http.parser.lagartobasedhtmlparser 2018-02-05 17:14:10013 info o.a.j.p.h.s.httpsamplerbase:parser for text/xml is org.apache.jmeter.protocol.http.parser.lagartobasedhtmlparser 2018-02-05 17:14:10，013 info o.a.j.p.h.s.httpsamplerbase:parser for text/vnd.wap.wml is org.apache.jmeter.protocol.http.parser.regexphtmlparser 2018-02-05 17:14:10013 info o.a.j.p.h.s.httpsamplerbase:parser for text/css is org.apache.jmeter.protocol.http.parser.cssparser 2018-02-05 17:14:10，434 info o.a.j.e.keytoolutils:keytool可在'keytool'2018-02-05 17:14:10435 info o.a.j.p.h.p.proxycontrol:http（s）test script recorder ssl proxy将使用支持文件/users/first.last/tmp/apache-jmeter-3.3/bin/proxyserver.jks 2018-02-05 17:14:10中嵌入第三方资源的密钥，557 info o.a.j.g.u.menufactory:跳过org.apache.jmeter.protocol.java.sampler.bsfsampler 2018-02-05 17:14:10586 info o.a.j.s.fileserver:default base='/users/first.last/tmp/apache-jmeter-3.3'2018-02-05 17:14:10639 info o.a.j.g.u.menufactory:跳过org.apache.jmeter.protocol.mongodb.config.mongosourceelement 2018-02-05 17:14:10，639 info o.a.j.g.u.menufactory:跳过org.apache.jmeter.protocol.mongodb.sampler.mongoscriptsampler 2018-02-05 17:14:10727 info o.a.j.g.u.menufactory:跳过org.apache.jmeter.timers.bsftimer 2018-02-05 17:14:10743 info o.a.j.g.u.menufactory:跳过org.apache.jmeter.visualizers.bsflistener 2018-02-05 17:14:10，834 info o.a.j.s.sampleresult:注：样本时间戳为开始时间2018-02-05 17:14:10835 info o.a.j.s.sampleresult:sampleresult.default.encoding设置为iso-8859-1 2018-02-05 17:14:10835 info o.a.j.s.sampleresult:sampleresult.usenanotime=true 2018-02-05 17:14:10，835 info o.a.j.s.sampleresult:sampleresult.nanothreadsleep=5000 2018-02-05 17:14:40008 info o.a.j.g.a.load:加载文件：/users/first.last/tmp/impala.jmx 2018-02-05 17:14:40009 info o.a.j.s.fileserver:set new base='/users/first.last/tmp'2018-02-05 17:14:40125 info o.a.j.s.saveservice:testplan（jmx）版本：2.2。testlog（jtl）版本：2.2 2018-02-05 17:14:40129 info o.a.j.s.saveservice:使用saveservice属性文件编码utf-8 2018-02-05 17:14:40130 info o.a.j.s.saveservice:使用saveservice属性版本3.2 2018-02-05 17:14:40132 info o.a.j.s.saveservice:加载文件：/users/first.last/tmp/impala.jmx 2018-02-05 17:14:40，479 info o.a.j.s.fileserver:set new base='/users/first.last/tmp'2018-02-05 17:14:44337 info o.a.j.e.standardjmeterengine:运行测试！2018-02-05 17:14:44337 info o.a.j.s.sampleevent:样本变量列表：[]2018-02-05 17:14:44337 info o.a.j.s.sampleevent:样本变量列表：[]2018-02-05 17:14:44356 info o.a.j.g.u.jmetermenubar:setrunning（true，local）2018-02-05 17:14:44，516 info o.a.j.e.standardjmeterengine:开始线程组：1:线程组2018-02-05 17:14:44517 info o.a.j.e.standardjmeterengine:开始组线程组的3个线程。2018-02-05 17:14:44517信息o.a.j.e.standardjmeterengine:线程将继续出现错误2018-02-05 17:14:44517信息o.a.j.t.threadgroup:正在启动线程组。。。number=1 threads=3 ramp up=1 perthread=333.33334 delayedstart=false 2018-02-05 17:14:44521 info o.a.j.t.threadgroup:已启动线程组number 1 2018-02-05 17:14:44522 info o.a.j.e.standardjmeterengine:已启动所有线程组2018-02-05 17:14:44522 info o.a.j.t.jmeterthread:已启动线程组1-1 2018-02-05 17:14:44，525信息o.a.j.t.jmeterthread:线程完成：线程组1-1 2018-02-05 17:14:44，526错误o.a.j.jmeter:未捕获的异常：java.lang.noclassdeffounderror:org/apache/thrift/protocol/tprotocol位于com.cloudera.impala.core.impalajdbcdriver。（未知源）~[impalajdbc4。jar:impalajdbc_2.5.42.1062]在java.lang.class.forname0（本机方法）~[？：1.8.0\u 162]在java.lang.class.forname（类。java:264)~[？：1.8.0¢]在org.apache.commons.dbcp2.basicdatasource.createconnectionfactory（basicdatasource）。java:2124)~[commons-dbcp2-2.1.1。jar:2.1.1]位于org.apache.commons.dbcp2.basicdatasource.createdatasource（basicdatasource）。java:2033)~[commons-dbcp2-2.1.1。jar:2.1.1]位于org.apache.commons.dbcp2.basicdatasource.getconnection（basicdatasource）。java:1533) ~[commons-dbcp2-2.1.1。jar:2.1.1]在org.apache.jmeter.protocol.jdbc.config.datasourceelement$datasourcecomponentimpl.getconnection（datasourceelement。java:326)~[apachejmeter\u jdbc。jar:3.3 r1808647]在org.apache.jmeter.protocol.jdbc.config.datasourceelement.getconnection（datasourceelement。java:191)~[apachejmeter\u jdbc。jar:3.3 r1808647]在org.apache.jmeter.protocol.jdbc.sampler.jdbccsampler.sample（jdbccsampler。java:79)~[apachejmeter\u jdbc。jar:3.3 r1808647]在org.apache.jmeter.threads.jmeterthread.executesamplepackage（jmeterthread。java:498)~（apachejmeter）核心。jar:3.3 r1808647]在org.apache.jmeter.threads.jmeterthread.processsampler（jmeterthread。java:424)~（apachejmeter）核心。jar:3.3 r1808647]位于org.apache.jmeter.threads.jmeterthread.run（jmeterthread。java:255)~（apachejmeter）核心。jar:3.3 r1808647]在java.lang.thread.run（线程。java:748)[？：1.8.0¢]原因：java.lang.classnotfoundexception:org.apache.thrift.protocol.tprotocol at java.net.urlclassloader.findclass（urlclassloader）。java:381)~[？：1.8.0¢]在java.lang.classloader.loadclass（类加载器。java:424)~[？：1.8.0\u 162]位于java.lang.classloader.loadclass（classloader。java:357) ~[?:1.8.0_162] ... 13更多2018-02-05 17:14:44860信息o.a.j.t.jmeterthread:线程开始：线程组1-2 2018-02-05 17:14:44862信息o.a.j.t.jmeterthread:线程完成：线程组1-2 2018-02-05 17:14:44862错误o.a.j.jmeter:未捕获异常：java.lang.noclassdef