possible fd leak

[davidbirdsong]

We have kafka-websocket running behind haproxy with not health checks enabled. I'm watching kafka-websocket repeatedly and steadily march towards it's fd ulimit.

lsof reports lots of stale looking fd's:

java    18052 produser 1185w  FIFO                0,8      0t0 99505498 pipe
java    18052 produser 1186u   REG                0,9        0     3822 [eventpoll]
java    18052 produser 1187u  IPv6           99505499      0t0      TCP 10.0.1.3:49029->10.0.1.34:2181 (ESTABLISHED)
java    18052 produser 1188u  IPv6           99505502      0t0      TCP 10.0.1.3:45571->10.0.1.4:8092 (ESTABLISHED)
java    18052 produser 1189r  FIFO                0,8      0t0 99505501 pipe
java    18052 produser 1190w  FIFO                0,8      0t0 99505501 pipe
java    18052 produser 1191u   REG                0,9        0     3822 [eventpoll]
java    18052 produser 1192r  FIFO                0,8      0t0 99505503 pipe
java    18052 produser 1193w  FIFO                0,8      0t0 99505503 pipe