Cluster Info:-
1 Master 32 gb [16 gb for heap]
8 node 64 gb [32gb for heap]
20 shards 1 replica.
each machine has 16 core cpu. 1 Tb storage.
Trying to bulk indexing on elasticsearch but bulk always stuck at a point. when i hits cat thread pool api GET _cat/thread_pool?v. result shown 1 node has bulk in queue.I think this is problem.but i don't know how can i resolve it.
node name active queue rejected
node5 bulk 16 134 0