Stephane, This is normal and expected. Even though there is no data flowing through your system, the framework does have some maintenance that it has to do, such as pruning old archived data from the Content Repository and Provenance Repository, checkpointing the FlowFile Repository, keeping stats for all of the processors, etc., etc.
If you were to see "Full Garbage Collections" taking place then there may be some concern but minor garbage collections are pretty frequent and shouldn't cause concern. Thanks -Mark > On Jun 30, 2016, at 12:37 AM, Stéphane Maarek <[email protected]> > wrote: > > Heap (32.0%) > Max 5 GB > Total 4 GB > Used 1.62 GB > Free 2.38 GB > > dd > > I have an issue, I followed this link to "optimize" HDF > https://community.hortonworks.com/articles/7882/hdfnifi-best-practices-for-setting-up-a-high-perfo.html > > <https://community.hortonworks.com/articles/7882/hdfnifi-best-practices-for-setting-up-a-high-perfo.html> > > > Basically, I have two UDP receivers but they don't receive any data right > now. They produce 14,000 tasks each every 5 minutes (which is fine). The > issue is that my Heap increases to the top 4 GB every minute I would say, > triggering a garbage collection event (I use G1). Is that normal? I would > expect the memory to stay constant if no data goes through my system at all > > Thanks, > Stephane
