I found workers in cluster always restart themselves and the executors up time is never more than 2 minutes. In every restart loop, the workers run well after restart, where it execute and emit tuples normally. Then when the uptime is near 2 minutes, all statistic data is reset to zero including the up time.
Here is the error log before every restart behavior: 2016-09-27 17:10:38.831 o.a.s.m.n.Client [INFO] waiting up to 600000 ms to send 0 pending messages to Netty-Client-storm08/132.228.28.151:6734 2016-09-27 17:10:38.831 o.a.s.m.n.Client [INFO] closing Netty Client Netty-Client-storm08/132.228.28.151:6731 2016-09-27 17:10:38.831 o.a.s.m.n.Client [INFO] waiting up to 600000 ms to send 0 pending messages to Netty-Client-storm08/132.228.28.151:6731 2016-09-27 17:10:38.832 o.a.s.m.n.Client [INFO] closing Netty Client Netty-Client-storm08/132.228.28.151:6738 2016-09-27 17:10:38.832 o.a.s.m.n.Client [INFO] waiting up to 600000 ms to send 0 pending messages to Netty-Client-storm08/132.228.28.151:6738 2016-09-27 17:10:38.833 o.a.s.m.n.Client [INFO] closing Netty Client Netty-Client-storm08/132.228.28.151:6741 2016-09-27 17:10:38.833 o.a.s.m.n.Client [INFO] waiting up to 600000 ms to send 0 pending messages to Netty-Client-storm08/132.228.28.151:6741 2016-09-27 17:10:38.833 o.a.s.m.n.Client [INFO] closing Netty Client Netty-Client-storm08/132.228.28.151:6737 2016-09-27 17:10:38.833 o.a.s.m.n.Client [INFO] waiting up to 600000 ms to send 0 pending messages to Netty-Client-storm08/132.228.28.151:6737 2016-09-27 17:10:38.834 o.a.s.m.n.Client [INFO] closing Netty Client Netty-Client-storm08/132.228.28.151:6740 2016-09-27 17:10:38.834 o.a.s.m.n.Client [INFO] waiting up to 600000 ms to send 0 pending messages to Netty-Client-storm08/132.228.28.151:6740 2016-09-27 17:10:38.834 o.a.s.m.n.Client [INFO] closing Netty Client Netty-Client-storm08/132.228.28.151:6751 2016-09-27 17:10:38.834 o.a.s.m.n.Client [INFO] waiting up to 600000 ms to send 0 pending messages to Netty-Client-storm08/132.228.28.151:6751 2016-09-27 17:10:40.894 o.a.s.d.worker [INFO] Shutting down worker DPI-10-1474620300 e0060b80-1f9b-4ea3-8ccf-fec15a2293d9 6737 2016-09-27 17:10:40.895 o.a.s.m.n.Client [INFO] closing Netty Client Netty-Client-storm07/132.228.28.150:6748 2016-09-27 17:10:40.895 o.a.s.m.n.Client [INFO] waiting up to 600000 ms to send 0 pending messages to Netty-Client-storm07/132.228.28.150:6748 2016-09-27 17:10:40.895 o.a.s.m.n.Client [INFO] closing Netty Client Netty-Client-storm02/132.228.28.137:6737 2016-09-27 17:10:40.896 o.a.s.m.n.Client [INFO] waiting up to 600000 ms to send 0 pending messages to Netty-Client-storm02/132.228.28.137:6737 2016-09-27 17:10:40.896 o.a.s.m.n.Client [INFO] closing Netty Client Netty-Client-storm07/132.228.28.150:6733 2016-09-27 17:10:40.896 o.a.s.m.n.Client [INFO] waiting up to 600000 ms to send 0 pending messages to Netty-Client-storm07/132.228.28.150:6733 2016-09-27 17:10:40.896 o.a.s.m.n.Client [INFO] closing Netty Client Netty-Client-storm07/132.228.28.150:6752 Regard, Junfeng Chen
