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POClear Simple Data Writer csv file in jmeter
 

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    <p>Can you please tell me how to clear/reset the csv file written by Simple Data Writer everytime I run the thread? Currently every time I run the thread, new results are getting appended to the end of the old results. I am a newbie, Thank you for your help.</p> <p>Code</p> <pre><code>&lt;?xml version="1.0" encoding="UTF-8"?&gt; &lt;jmeterTestPlan version="1.2" properties="2.4" jmeter="2.9 r1437961"&gt; &lt;hashTree&gt; &lt;TestPlan guiclass="TestPlanGui" testclass="TestPlan" testname="Test Plan" enabled="true"&gt; &lt;stringProp name="TestPlan.comments"&gt;&lt;/stringProp&gt; &lt;boolProp name="TestPlan.functional_mode"&gt;false&lt;/boolProp&gt; &lt;boolProp name="TestPlan.serialize_threadgroups"&gt;true&lt;/boolProp&gt; &lt;elementProp name="TestPlan.user_defined_variables" elementType="Arguments" guiclass="ArgumentsPanel" testclass="Arguments" testname="User Defined Variables" enabled="true"&gt; &lt;collectionProp name="Arguments.arguments"/&gt; &lt;/elementProp&gt; &lt;stringProp name="TestPlan.user_define_classpath"&gt;&lt;/stringProp&gt; &lt;/TestPlan&gt; &lt;hashTree&gt; &lt;ThreadGroup guiclass="ThreadGroupGui" testclass="ThreadGroup" testname="Thread Group-1" enabled="true"&gt; &lt;stringProp name="ThreadGroup.on_sample_error"&gt;continue&lt;/stringProp&gt; &lt;elementProp name="ThreadGroup.main_controller" elementType="LoopController" guiclass="LoopControlPanel" testclass="LoopController" testname="Loop Controller" enabled="true"&gt; &lt;boolProp name="LoopController.continue_forever"&gt;false&lt;/boolProp&gt; &lt;stringProp name="LoopController.loops"&gt;1&lt;/stringProp&gt; &lt;/elementProp&gt; &lt;stringProp name="ThreadGroup.num_threads"&gt;1&lt;/stringProp&gt; &lt;stringProp name="ThreadGroup.ramp_time"&gt;1&lt;/stringProp&gt; &lt;longProp name="ThreadGroup.start_time"&gt;1371005294000&lt;/longProp&gt; &lt;longProp name="ThreadGroup.end_time"&gt;1371005294000&lt;/longProp&gt; &lt;boolProp name="ThreadGroup.scheduler"&gt;false&lt;/boolProp&gt; &lt;stringProp name="ThreadGroup.duration"&gt;&lt;/stringProp&gt; &lt;stringProp name="ThreadGroup.delay"&gt;&lt;/stringProp&gt; &lt;/ThreadGroup&gt; &lt;hashTree&gt; &lt;HTTPSamplerProxy guiclass="HttpTestSampleGui" testclass="HTTPSamplerProxy" testname="GET Patient list" enabled="true"&gt; &lt;elementProp name="HTTPsampler.Arguments" elementType="Arguments" guiclass="HTTPArgumentsPanel" testclass="Arguments" testname="User Defined Variables" enabled="true"&gt; &lt;collectionProp name="Arguments.arguments"/&gt; &lt;/elementProp&gt; &lt;stringProp name="HTTPSampler.domain"&gt;http://sampleurl&lt;/stringProp&gt; &lt;stringProp name="HTTPSampler.port"&gt;&lt;/stringProp&gt; &lt;stringProp name="HTTPSampler.connect_timeout"&gt;&lt;/stringProp&gt; &lt;stringProp name="HTTPSampler.response_timeout"&gt;&lt;/stringProp&gt; &lt;stringProp name="HTTPSampler.protocol"&gt;&lt;/stringProp&gt; &lt;stringProp name="HTTPSampler.contentEncoding"&gt;&lt;/stringProp&gt; &lt;stringProp name="HTTPSampler.path"&gt;http://sampleurl&lt;/stringProp&gt; &lt;stringProp name="HTTPSampler.method"&gt;GET&lt;/stringProp&gt; &lt;boolProp name="HTTPSampler.follow_redirects"&gt;true&lt;/boolProp&gt; &lt;boolProp name="HTTPSampler.auto_redirects"&gt;false&lt;/boolProp&gt; &lt;boolProp name="HTTPSampler.use_keepalive"&gt;true&lt;/boolProp&gt; &lt;boolProp name="HTTPSampler.DO_MULTIPART_POST"&gt;false&lt;/boolProp&gt; &lt;boolProp name="HTTPSampler.monitor"&gt;false&lt;/boolProp&gt; &lt;stringProp name="HTTPSampler.embedded_url_re"&gt;&lt;/stringProp&gt; &lt;/HTTPSamplerProxy&gt; &lt;hashTree&gt; &lt;AuthManager guiclass="AuthPanel" testclass="AuthManager" testname="HTTP Authorization Manager" enabled="true"&gt; &lt;collectionProp name="AuthManager.auth_list"&gt; &lt;elementProp name="" elementType="Authorization"&gt; &lt;stringProp name="Authorization.url"&gt;http://sampurl&lt;/stringProp&gt; &lt;stringProp name="Authorization.username"&gt;samp&lt;/stringProp&gt; &lt;stringProp name="Authorization.password"&gt;samp&lt;/stringProp&gt; &lt;stringProp name="Authorization.domain"&gt;&lt;/stringProp&gt; &lt;stringProp name="Authorization.realm"&gt;&lt;/stringProp&gt; &lt;/elementProp&gt; &lt;/collectionProp&gt; &lt;/AuthManager&gt; &lt;hashTree/&gt; &lt;RegexExtractor guiclass="RegexExtractorGui" testclass="RegexExtractor" testname="Regular Expression Extractor" enabled="true"&gt; &lt;stringProp name="RegexExtractor.useHeaders"&gt;false&lt;/stringProp&gt; &lt;stringProp name="RegexExtractor.refname"&gt;Ary&lt;/stringProp&gt; &lt;stringProp name="RegexExtractor.regex"&gt;\[([^\]]+)\]&lt;/stringProp&gt; &lt;stringProp name="RegexExtractor.template"&gt;$1$&lt;/stringProp&gt; &lt;stringProp name="RegexExtractor.default"&gt;&lt;/stringProp&gt; &lt;stringProp name="RegexExtractor.match_number"&gt;1&lt;/stringProp&gt; &lt;/RegexExtractor&gt; &lt;hashTree/&gt; &lt;RegexExtractor guiclass="RegexExtractorGui" testclass="RegexExtractor" testname="Parse ECN array" enabled="true"&gt; &lt;stringProp name="RegexExtractor.useHeaders"&gt;false&lt;/stringProp&gt; &lt;stringProp name="RegexExtractor.refname"&gt;vals&lt;/stringProp&gt; &lt;stringProp name="RegexExtractor.regex"&gt;&amp;quot;([^&amp;quot;]+)&amp;quot;&lt;/stringProp&gt; &lt;stringProp name="RegexExtractor.template"&gt;$1$&lt;/stringProp&gt; &lt;stringProp name="RegexExtractor.default"&gt;&lt;/stringProp&gt; &lt;stringProp name="RegexExtractor.match_number"&gt;-1&lt;/stringProp&gt; &lt;stringProp name="Scope.variable"&gt;PatientArray&lt;/stringProp&gt; &lt;stringProp name="Sample.scope"&gt;variable&lt;/stringProp&gt; &lt;/RegexExtractor&gt; &lt;hashTree/&gt; &lt;/hashTree&gt; &lt;DebugSampler guiclass="TestBeanGUI" testclass="DebugSampler" testname="RegX output" enabled="true"&gt; &lt;boolProp name="displayJMeterProperties"&gt;false&lt;/boolProp&gt; &lt;boolProp name="displayJMeterVariables"&gt;true&lt;/boolProp&gt; &lt;boolProp name="displaySystemProperties"&gt;false&lt;/boolProp&gt; &lt;/DebugSampler&gt; &lt;hashTree/&gt; &lt;ForeachController guiclass="ForeachControlPanel" testclass="ForeachController" testname="ForEach Controller" enabled="true"&gt; &lt;stringProp name="ForeachController.inputVal"&gt;vals&lt;/stringProp&gt; &lt;stringProp name="ForeachController.returnVal"&gt;userid&lt;/stringProp&gt; &lt;boolProp name="ForeachController.useSeparator"&gt;true&lt;/boolProp&gt; &lt;/ForeachController&gt; &lt;hashTree&gt; &lt;DebugSampler guiclass="TestBeanGUI" testclass="DebugSampler" testname="${userid}" enabled="true"&gt; &lt;boolProp name="displayJMeterProperties"&gt;true&lt;/boolProp&gt; &lt;boolProp name="displayJMeterVariables"&gt;true&lt;/boolProp&gt; &lt;boolProp name="displaySystemProperties"&gt;false&lt;/boolProp&gt; &lt;/DebugSampler&gt; &lt;hashTree&gt; &lt;ResultCollector guiclass="SimpleDataWriter" testclass="ResultCollector" testname="Simple Data Writer" enabled="true"&gt; &lt;boolProp name="ResultCollector.error_logging"&gt;false&lt;/boolProp&gt; &lt;objProp&gt; &lt;name&gt;saveConfig&lt;/name&gt; &lt;value class="SampleSaveConfiguration"&gt; &lt;time&gt;false&lt;/time&gt; &lt;latency&gt;false&lt;/latency&gt; &lt;timestamp&gt;false&lt;/timestamp&gt; &lt;success&gt;false&lt;/success&gt; &lt;label&gt;true&lt;/label&gt; &lt;code&gt;false&lt;/code&gt; &lt;message&gt;false&lt;/message&gt; &lt;threadName&gt;false&lt;/threadName&gt; &lt;dataType&gt;false&lt;/dataType&gt; &lt;encoding&gt;false&lt;/encoding&gt; &lt;assertions&gt;false&lt;/assertions&gt; &lt;subresults&gt;false&lt;/subresults&gt; &lt;responseData&gt;false&lt;/responseData&gt; &lt;samplerData&gt;false&lt;/samplerData&gt; &lt;xml&gt;false&lt;/xml&gt; &lt;fieldNames&gt;false&lt;/fieldNames&gt; &lt;responseHeaders&gt;false&lt;/responseHeaders&gt; &lt;requestHeaders&gt;false&lt;/requestHeaders&gt; &lt;responseDataOnError&gt;false&lt;/responseDataOnError&gt; &lt;saveAssertionResultsFailureMessage&gt;false&lt;/saveAssertionResultsFailureMessage&gt; &lt;assertionsResultsToSave&gt;0&lt;/assertionsResultsToSave&gt; &lt;/value&gt; &lt;/objProp&gt; &lt;stringProp name="filename"&gt;C:\Documents and Settings\valliammaim\My Documents\Downloads\apache-jmeter-2.9\apache-jmeter-2.9\bin\RegXoutput.csv&lt;/stringProp&gt; &lt;/ResultCollector&gt; &lt;hashTree/&gt; &lt;/hashTree&gt; &lt;/hashTree&gt; &lt;ResultCollector guiclass="ViewResultsFullVisualizer" testclass="ResultCollector" testname="View Results Tree" enabled="true"&gt; &lt;boolProp name="ResultCollector.error_logging"&gt;false&lt;/boolProp&gt; &lt;objProp&gt; &lt;name&gt;saveConfig&lt;/name&gt; &lt;value class="SampleSaveConfiguration"&gt; &lt;time&gt;true&lt;/time&gt; &lt;latency&gt;true&lt;/latency&gt; &lt;timestamp&gt;true&lt;/timestamp&gt; &lt;success&gt;true&lt;/success&gt; &lt;label&gt;true&lt;/label&gt; &lt;code&gt;true&lt;/code&gt; &lt;message&gt;true&lt;/message&gt; &lt;threadName&gt;true&lt;/threadName&gt; &lt;dataType&gt;true&lt;/dataType&gt; &lt;encoding&gt;false&lt;/encoding&gt; &lt;assertions&gt;true&lt;/assertions&gt; &lt;subresults&gt;true&lt;/subresults&gt; &lt;responseData&gt;false&lt;/responseData&gt; &lt;samplerData&gt;false&lt;/samplerData&gt; &lt;xml&gt;false&lt;/xml&gt; &lt;fieldNames&gt;false&lt;/fieldNames&gt; &lt;responseHeaders&gt;false&lt;/responseHeaders&gt; &lt;requestHeaders&gt;false&lt;/requestHeaders&gt; &lt;responseDataOnError&gt;false&lt;/responseDataOnError&gt; &lt;saveAssertionResultsFailureMessage&gt;false&lt;/saveAssertionResultsFailureMessage&gt; &lt;assertionsResultsToSave&gt;0&lt;/assertionsResultsToSave&gt; &lt;bytes&gt;true&lt;/bytes&gt; &lt;/value&gt; &lt;/objProp&gt; &lt;stringProp name="filename"&gt;&lt;/stringProp&gt; &lt;/ResultCollector&gt; &lt;hashTree/&gt; &lt;ResultCollector guiclass="StatVisualizer" testclass="ResultCollector" testname="Aggregate Report" enabled="true"&gt; &lt;boolProp name="ResultCollector.error_logging"&gt;false&lt;/boolProp&gt; &lt;objProp&gt; &lt;name&gt;saveConfig&lt;/name&gt; &lt;value class="SampleSaveConfiguration"&gt; &lt;time&gt;true&lt;/time&gt; &lt;latency&gt;true&lt;/latency&gt; &lt;timestamp&gt;true&lt;/timestamp&gt; &lt;success&gt;true&lt;/success&gt; &lt;label&gt;true&lt;/label&gt; &lt;code&gt;true&lt;/code&gt; &lt;message&gt;false&lt;/message&gt; &lt;threadName&gt;true&lt;/threadName&gt; &lt;dataType&gt;true&lt;/dataType&gt; &lt;encoding&gt;false&lt;/encoding&gt; &lt;assertions&gt;true&lt;/assertions&gt; &lt;subresults&gt;true&lt;/subresults&gt; &lt;responseData&gt;false&lt;/responseData&gt; &lt;samplerData&gt;false&lt;/samplerData&gt; &lt;xml&gt;false&lt;/xml&gt; &lt;fieldNames&gt;true&lt;/fieldNames&gt; &lt;responseHeaders&gt;false&lt;/responseHeaders&gt; &lt;requestHeaders&gt;false&lt;/requestHeaders&gt; &lt;responseDataOnError&gt;false&lt;/responseDataOnError&gt; &lt;saveAssertionResultsFailureMessage&gt;false&lt;/saveAssertionResultsFailureMessage&gt; &lt;assertionsResultsToSave&gt;0&lt;/assertionsResultsToSave&gt; &lt;bytes&gt;true&lt;/bytes&gt; &lt;/value&gt; &lt;/objProp&gt; &lt;stringProp name="filename"&gt;C:\Documents and Settings\valliammaim\My Documents\Downloads\apache-jmeter-2.9\apache-jmeter-2.9\bin\report.csv&lt;/stringProp&gt; &lt;boolProp name="useGroupName"&gt;true&lt;/boolProp&gt; &lt;/ResultCollector&gt; &lt;hashTree/&gt; &lt;/hashTree&gt; &lt;ThreadGroup guiclass="ThreadGroupGui" testclass="ThreadGroup" testname="Thread Group-2" enabled="true"&gt; &lt;stringProp name="ThreadGroup.on_sample_error"&gt;continue&lt;/stringProp&gt; &lt;elementProp name="ThreadGroup.main_controller" elementType="LoopController" guiclass="LoopControlPanel" testclass="LoopController" testname="Loop Controller" enabled="true"&gt; &lt;boolProp name="LoopController.continue_forever"&gt;false&lt;/boolProp&gt; &lt;stringProp name="LoopController.loops"&gt;1&lt;/stringProp&gt; &lt;/elementProp&gt; &lt;stringProp name="ThreadGroup.num_threads"&gt;1&lt;/stringProp&gt; &lt;stringProp name="ThreadGroup.ramp_time"&gt;1&lt;/stringProp&gt; &lt;longProp name="ThreadGroup.start_time"&gt;1372725732000&lt;/longProp&gt; &lt;longProp name="ThreadGroup.end_time"&gt;1372725732000&lt;/longProp&gt; &lt;boolProp name="ThreadGroup.scheduler"&gt;false&lt;/boolProp&gt; &lt;stringProp name="ThreadGroup.duration"&gt;&lt;/stringProp&gt; &lt;stringProp name="ThreadGroup.delay"&gt;&lt;/stringProp&gt; &lt;/ThreadGroup&gt; &lt;hashTree&gt; &lt;WhileController guiclass="WhileControllerGui" testclass="WhileController" testname="While Controller" enabled="true"&gt; &lt;stringProp name="WhileController.condition"&gt;&amp;quot;${userid}&amp;quot; != &amp;quot;&amp;lt;EOF&amp;gt;&amp;quot;&lt;/stringProp&gt; &lt;/WhileController&gt; &lt;hashTree&gt; &lt;LoopController guiclass="LoopControlPanel" testclass="LoopController" testname="Loop Controller" enabled="true"&gt; &lt;boolProp name="LoopController.continue_forever"&gt;true&lt;/boolProp&gt; &lt;stringProp name="LoopController.loops"&gt;1&lt;/stringProp&gt; &lt;/LoopController&gt; &lt;hashTree&gt; &lt;HTTPSamplerProxy guiclass="HttpTestSampleGui" testclass="HTTPSamplerProxy" testname="GET Patient" enabled="true"&gt; &lt;elementProp name="HTTPsampler.Arguments" elementType="Arguments" guiclass="HTTPArgumentsPanel" testclass="Arguments" testname="User Defined Variables" enabled="true"&gt; &lt;collectionProp name="Arguments.arguments"/&gt; &lt;/elementProp&gt; &lt;stringProp name="HTTPSampler.domain"&gt;http://sampurl/${patientECN}&lt;/stringProp&gt; &lt;stringProp name="HTTPSampler.port"&gt;&lt;/stringProp&gt; &lt;stringProp name="HTTPSampler.connect_timeout"&gt;&lt;/stringProp&gt; &lt;stringProp name="HTTPSampler.response_timeout"&gt;&lt;/stringProp&gt; &lt;stringProp name="HTTPSampler.protocol"&gt;&lt;/stringProp&gt; &lt;stringProp name="HTTPSampler.contentEncoding"&gt;&lt;/stringProp&gt; &lt;stringProp name="HTTPSampler.path"&gt;http://sampleurl/${patientECN}&lt;/stringProp&gt; &lt;stringProp name="HTTPSampler.method"&gt;GET&lt;/stringProp&gt; &lt;boolProp name="HTTPSampler.follow_redirects"&gt;true&lt;/boolProp&gt; &lt;boolProp name="HTTPSampler.auto_redirects"&gt;false&lt;/boolProp&gt; &lt;boolProp name="HTTPSampler.use_keepalive"&gt;true&lt;/boolProp&gt; &lt;boolProp name="HTTPSampler.DO_MULTIPART_POST"&gt;false&lt;/boolProp&gt; &lt;boolProp name="HTTPSampler.monitor"&gt;false&lt;/boolProp&gt; &lt;stringProp name="HTTPSampler.embedded_url_re"&gt;&lt;/stringProp&gt; &lt;/HTTPSamplerProxy&gt; &lt;hashTree&gt; &lt;ConstantTimer guiclass="ConstantTimerGui" testclass="ConstantTimer" testname="Constant Timer" enabled="true"&gt; &lt;stringProp name="ConstantTimer.delay"&gt;100&lt;/stringProp&gt; &lt;/ConstantTimer&gt; &lt;hashTree/&gt; &lt;AuthManager guiclass="AuthPanel" testclass="AuthManager" testname="HTTP Authorization Manager" enabled="true"&gt; &lt;collectionProp name="AuthManager.auth_list"&gt; &lt;elementProp name="" elementType="Authorization"&gt; &lt;stringProp name="Authorization.url"&gt;http://sampurl/${userid}&lt;/stringProp&gt; &lt;stringProp name="Authorization.username"&gt;sample&lt;/stringProp&gt; &lt;stringProp name="Authorization.password"&gt;sample&lt;/stringProp&gt; &lt;stringProp name="Authorization.domain"&gt;&lt;/stringProp&gt; &lt;stringProp name="Authorization.realm"&gt;&lt;/stringProp&gt; &lt;/elementProp&gt; &lt;/collectionProp&gt; &lt;/AuthManager&gt; &lt;hashTree/&gt; &lt;/hashTree&gt; &lt;/hashTree&gt; &lt;CSVDataSet guiclass="TestBeanGUI" testclass="CSVDataSet" testname="CSV Data Set Config" enabled="true"&gt; &lt;stringProp name="delimiter"&gt;,&lt;/stringProp&gt; &lt;stringProp name="fileEncoding"&gt;&lt;/stringProp&gt; &lt;stringProp name="filename"&gt;RegXoutput.csv&lt;/stringProp&gt; &lt;boolProp name="quotedData"&gt;true&lt;/boolProp&gt; &lt;boolProp name="recycle"&gt;false&lt;/boolProp&gt; &lt;stringProp name="shareMode"&gt;All threads&lt;/stringProp&gt; &lt;boolProp name="stopThread"&gt;true&lt;/boolProp&gt; &lt;stringProp name="variableNames"&gt;userid&lt;/stringProp&gt; &lt;/CSVDataSet&gt; &lt;hashTree/&gt; &lt;/hashTree&gt; &lt;ResultCollector guiclass="StatVisualizer" testclass="ResultCollector" testname="Aggregate Report" enabled="true"&gt; &lt;boolProp name="ResultCollector.error_logging"&gt;false&lt;/boolProp&gt; &lt;objProp&gt; &lt;name&gt;saveConfig&lt;/name&gt; &lt;value class="SampleSaveConfiguration"&gt; &lt;time&gt;true&lt;/time&gt; &lt;latency&gt;true&lt;/latency&gt; &lt;timestamp&gt;true&lt;/timestamp&gt; &lt;success&gt;true&lt;/success&gt; &lt;label&gt;true&lt;/label&gt; &lt;code&gt;true&lt;/code&gt; &lt;message&gt;true&lt;/message&gt; &lt;threadName&gt;true&lt;/threadName&gt; &lt;dataType&gt;true&lt;/dataType&gt; &lt;encoding&gt;false&lt;/encoding&gt; &lt;assertions&gt;true&lt;/assertions&gt; &lt;subresults&gt;true&lt;/subresults&gt; &lt;responseData&gt;false&lt;/responseData&gt; &lt;samplerData&gt;false&lt;/samplerData&gt; &lt;xml&gt;false&lt;/xml&gt; &lt;fieldNames&gt;false&lt;/fieldNames&gt; &lt;responseHeaders&gt;false&lt;/responseHeaders&gt; &lt;requestHeaders&gt;false&lt;/requestHeaders&gt; &lt;responseDataOnError&gt;false&lt;/responseDataOnError&gt; &lt;saveAssertionResultsFailureMessage&gt;false&lt;/saveAssertionResultsFailureMessage&gt; &lt;assertionsResultsToSave&gt;0&lt;/assertionsResultsToSave&gt; &lt;bytes&gt;true&lt;/bytes&gt; &lt;/value&gt; &lt;/objProp&gt; &lt;stringProp name="filename"&gt;&lt;/stringProp&gt; &lt;/ResultCollector&gt; &lt;hashTree/&gt; &lt;ResultCollector guiclass="ViewResultsFullVisualizer" testclass="ResultCollector" testname="View Results Tree" enabled="true"&gt; &lt;boolProp name="ResultCollector.error_logging"&gt;false&lt;/boolProp&gt; &lt;objProp&gt; &lt;name&gt;saveConfig&lt;/name&gt; &lt;value class="SampleSaveConfiguration"&gt; &lt;time&gt;true&lt;/time&gt; &lt;latency&gt;true&lt;/latency&gt; &lt;timestamp&gt;true&lt;/timestamp&gt; &lt;success&gt;true&lt;/success&gt; &lt;label&gt;true&lt;/label&gt; &lt;code&gt;true&lt;/code&gt; &lt;message&gt;true&lt;/message&gt; &lt;threadName&gt;true&lt;/threadName&gt; &lt;dataType&gt;true&lt;/dataType&gt; &lt;encoding&gt;false&lt;/encoding&gt; &lt;assertions&gt;true&lt;/assertions&gt; &lt;subresults&gt;true&lt;/subresults&gt; &lt;responseData&gt;false&lt;/responseData&gt; &lt;samplerData&gt;false&lt;/samplerData&gt; &lt;xml&gt;false&lt;/xml&gt; &lt;fieldNames&gt;false&lt;/fieldNames&gt; &lt;responseHeaders&gt;false&lt;/responseHeaders&gt; &lt;requestHeaders&gt;false&lt;/requestHeaders&gt; &lt;responseDataOnError&gt;false&lt;/responseDataOnError&gt; &lt;saveAssertionResultsFailureMessage&gt;false&lt;/saveAssertionResultsFailureMessage&gt; &lt;assertionsResultsToSave&gt;0&lt;/assertionsResultsToSave&gt; &lt;bytes&gt;true&lt;/bytes&gt; &lt;/value&gt; &lt;/objProp&gt; &lt;stringProp name="filename"&gt;&lt;/stringProp&gt; &lt;/ResultCollector&gt; &lt;hashTree/&gt; &lt;/hashTree&gt; &lt;/hashTree&gt; </code></pre> <p> </p>
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    1. USSashi
    1. USSashi
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    1. COCould you show the code used to open/write the csv file?
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      1. USrsp
    2. COIn the code update above I am using a simple data writer to capture my output. Which I want to overwrite every time the thread group is executed. Thank you for helping me.
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      1. POClear Simple Data Writer csv file in jmeter
      1. USSashi
    3. COThe Simple Data Writer has no property that lets you truncate the file which is a pity. Alternatively you could put a timestamp in teh filename to make sure it is empty at the start of the test (like `RegXoutput${__time(yyyyMMdd-HHmm,)}.csv`) and cleanup afterwards or use a BeanShell script to truncate the file.
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      1. POClear Simple Data Writer csv file in jmeter
      1. USrsp
 

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