Can you please try increasing the zookeeper.session.timeout.ms parameter to some higher value? ... View more

Are you able to try it out? ... View more

I do see lot of conflicting GC arguments. Can you please try with Xmx 2048 only and remove all the exlicit GC arguments first. Then you need to tune the topology.max.spout.pending parameter with some trial and error to find the correct value. ... View more

Mostly it sounds like your upstream spouts/bolts are outpacing your downstream bolts. Try throttling your spouts with topology.max.spout.pending settings and try to increase the topology’s parallelism. Also based on your JVM profiling find out if you are GC’ing too much which can cause tuples failures. Try increasing JVM heal size (-xmx) that is allocated for each worker. You may have to use explicit G1 garbage collector. This may have negative impact as GC pause may take longer for larger heaps. ... View more

Normally The Content Repository holds the content for all the FlowFiles in the system. By default, it is installed in the same root installation directory as all the other repositories; as a admin you can configure it on a separate drive if available. e.g. check your {nifi_install_dir}/content_repository for contents. ... View more