Excel Output

Hi

I have a graph that writes multiple tabs (around 8) into Excel. The output excel size is around 3mb. But I keep hitting JVM heap space issue when using spreadsheetwriter or XLSdatawriter. I was able to run this now by increase the jvm size from 256mb to 1gb. My question - Is there any better way to do this to use as minimum space as possible. 1gb sounds like a lot of memory to write into a 3mb excel file.

Below is the part of execution summary

INFO [WatchDog] - -----------------------** Summary of Phases execution **---------------------
INFO [WatchDog] - Phase# Finished Status RunTime(sec) MemoryAllocation(KB)
INFO [WatchDog] - 0 FINISHED_OK 3 96958
INFO [WatchDog] - 1 FINISHED_OK 2 129966
INFO [WatchDog] - 2 FINISHED_OK 2 170021
INFO [WatchDog] - 3 FINISHED_OK 2 209959
INFO [WatchDog] - 4 FINISHED_OK 2 248970
INFO [WatchDog] - 5 FINISHED_OK 2 288984
INFO [WatchDog] - 6 FINISHED_OK 2 328735
INFO [WatchDog] - 7 FINISHED_OK 14 439756
INFO [WatchDog] - 8 FINISHED_OK 2 400166
INFO [WatchDog] - 9 FINISHED_OK 7 402445

500Mb seems to work now, but I am not convinced this would take so much space. Each node has an input that reads from datasource and writes into a tab.

Thanks,
Praveen Boddu