Github user vlsi commented on a diff in the pull request: https://github.com/apache/jmeter/pull/162#discussion_r56126539 --- Diff: src/components/org/apache/jmeter/config/CSVDataSet.java --- @@ -146,71 +146,76 @@ public void setProperty(JMeterProperty property) { @Override public void iterationStart(LoopIterationEvent iterEvent) { - FileServer server = FileServer.getFileServer(); - final JMeterContext context = getThreadContext(); - String delim = getDelimiter(); - if (delim.equals("\\t")) { // $NON-NLS-1$ - delim = "\t";// Make it easier to enter a Tab // $NON-NLS-1$ - } else if (delim.length()==0){ - log.warn("Empty delimiter converted to ','"); - delim=","; - } - if (vars == null) { - String _fileName = getFilename(); - String mode = getShareMode(); - int modeInt = CSVDataSetBeanInfo.getShareModeAsInt(mode); - switch(modeInt){ - case CSVDataSetBeanInfo.SHARE_ALL: - alias = _fileName; - break; - case CSVDataSetBeanInfo.SHARE_GROUP: - alias = _fileName+"@"+System.identityHashCode(context.getThreadGroup()); - break; - case CSVDataSetBeanInfo.SHARE_THREAD: - alias = _fileName+"@"+System.identityHashCode(context.getThread()); - break; - default: - alias = _fileName+"@"+mode; // user-specified key - break; + String _fileName = getFilename(); + if (!_fileName.isEmpty()) { + FileServer server = FileServer.getFileServer(); + final JMeterContext context = getThreadContext(); + String delim = getDelimiter(); + if (delim.equals("\\t")) { // $NON-NLS-1$ + delim = "\t";// Make it easier to enter a Tab // $NON-NLS-1$ + } else if (delim.length()==0){ + log.warn("Empty delimiter converted to ','"); + delim=","; } - final String names = getVariableNames(); - if (names == null || names.length()==0) { - String header = server.reserveFile(_fileName, getFileEncoding(), alias, true); - try { - vars = CSVSaveService.csvSplitString(header, delim.charAt(0)); - firstLineIsNames = true; - } catch (IOException e) { - log.warn("Could not split CSV header line",e); + if (vars == null) { + String mode = getShareMode(); + int modeInt = CSVDataSetBeanInfo.getShareModeAsInt(mode); + switch(modeInt){ + case CSVDataSetBeanInfo.SHARE_ALL: + alias = _fileName; + break; + case CSVDataSetBeanInfo.SHARE_GROUP: + alias = _fileName+"@"+System.identityHashCode(context.getThreadGroup()); --- End diff -- Do you assume "all the thread groups would get unique hash codes". I'm afraid that would not work.
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