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Getting error while running merged jtl files

Stack Overflow Asked by Ajij Shaikh on February 4, 2021

I am trying to generate the report in JMeter by merging .jtl files content getting below error –

File '/home/ajij/jmeter_tests_cli/merged.jtl' does not contain the field names header, ensure the jmeter.save.saveservice.* properties are the same as when the CSV file was created or the file may be read incorrectly when generating report

An error occurred: Error while processing samples: Consumer failed with message :Could not parse timeStamp <timeStamp> using format defined by property jmeter.save.saveservice.timestamp_format=ms on sample timeStamp,elapsed,label,responseCode,responseMessage,threadName,dataType,success,failureMessage,bytes,sentBytes,grpThreads,allThreads,URL,Latency,IdleTime,Connect

Note –

If i run 2 independent jtl files then will get run successfully

Command to execute JTL file –

  • ../Documents/apache-jmeter-5.2/bin/jmeter.sh -g merged.jtl -o ./folder

JTL File content –

Quick Help will be appreciated !!!

2 Answers

Did you try removing the XML tags? I haven't tested yet using the CSV you shared, but it might be enough removing the XML tags and merging "manually" the files, I'd merge the files by removing the second headers and the XML tags, remember JMeter process the requests by time so it will order the requests by timestamp

Answered by Cristian Moyano on February 4, 2021

As per JMeter's documentation:

The dashboard generator is a modular extension of JMeter. Its default behavior is to read and process samples from CSV files to generate HTML files containing graph views. It can generate the report at end of a load test or on demand.

As of current latest stable version JMeter 5.3 generating dashboards from .jtl files in XML format is not supported so either re-run your test with the following JMeter property defined:

jmeter.save.saveservice.output_format=csv

or review your way of "merging" the result files, if it supports CSV output format - go for it.

Answered by Dmitri T on February 4, 2021

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