Re: Unexpected delay between pings sent from the client to server

2019-04-07 Thread Patrick Hunt
Try turning on verbose GC logging and look if it's GC. In my experience that's often the cause. "client application suddenly loses its Zookeeper session" - might be client GC, or it could be server GC. See if either of those shed light. Patrick On Sat, Apr 6, 2019 at 1:10 PM Norbert Kalmar

Re: Unexpected delay between pings sent from the client to server

2019-04-06 Thread Norbert Kalmar
Hi Gelbana, max_latency tells you the time elapsed between creating the request and FinalRequestProcessor processing it. So the cause for being that high could be basically anything. Turning on debug log for ZooKeeper server could help pinpoint at what point the request get stuck for so long.

Re: Unexpected delay between pings sent from the client to server

2019-04-03 Thread Muhammad Gelbana
Another couple of things I found: *A couple of Zookeeper client threads are stuck at these stacktraces for ~30 seconds* "pool-2-thread-1-EventThread" #1218 daemon prio=5 os_prio=0 tid=0x7ff3f5e23800 nid=0x5cd8 waiting on condition [0x7ff3ef803000] java.lang.Thread.State: WAITING

Unexpected delay between pings sent from the client to server

2019-04-03 Thread Muhammad Gelbana
I'm trying to debug a problem where our client application suddenly loses its Zookeeper session. I concluded that by looking at the Zookeeper server logs. I increased the logging details for the client and found the following log messages > DEBUG: [07:33:33] [demo | HA | Manager] Got ping