Some generated reports are not filled with parameters

[motiejunas.tadas]

Hello,

Everything works smooth, when I'm not using threads in application, while calling jasper API to generate reports. But as I saw, if I will use java thread pools, I could generate reports much faster. Only one problem. When I use thread pools, some reports are generated  wrong - without parameters filled.
 

...ExecutorService executor = Executors.newFixedThreadPool(5);for(int i = 0; i < 1000; i++){    Runnable runnable = new Generator(parameters, "target/resources/Invoice.jasper", "Invoice", i);    executor.execute(runnable);}...public class Generator implements Runnable {...@Overridepublic void run() {    try {        JasperPrint jp = JasperFillManager.fillReport(sourceFileName, params, new JREmptyDataSource());        JasperExportManager.exportReportToPdfFile(jp, "./target/resources/" + printFileName + "-" + counter + ".pdf");...[/code]

I know, that it can be related with subreprot filling, because these jasper API generating methods already working in multi-threading.
Maybe anyone can comment on that? Is it possible to ganerate a lot of reports while using executor pool?

Thanks,
TM 
 

[lucianc]

Looking at your code, it might be that you use the same parameters map object for all the reports.  That would be a problem, you need to create a fresh map for each fill process.

Regards,

Lucian