Logstash is consuming 750% of CPU and driving idle cpu to 0%

top - 21:32:02 up 12 days, 4:05, 2 users, load average: 15.35, 14.05, 12.95
Tasks: 360 total, 1 running, 359 sleeping, 0 stopped, 0 zombie
%Cpu(s): 96.2 us, 3.7 sy, 0.0 ni, 0.0 id, 0.0 wa, 0.0 hi, 0.1 si, 0.0 st
KiB Mem : 16431896 total, 355952 free, 11713020 used, 4362924 buff/cache
KiB Swap: 0 total, 0 free, 0 used. 4231576 avail Mem

PID USER PR NI VIRT RES SHR S %CPU %MEM TIME+ COMMAND
24882 ubuntu 20 0 6413952 826204 9888 S 675.2 5.0 93831:09 java
1587 root 20 0 1149076 150272 17728 S 45.4 0.9 0:01.79 java

ubuntu 24882 24864 99 May17 ? 65-03:54:46 /usr/bin/java -Xmx500m -Xss2048k -Djffi.boot.library.path=/usr/share/logstash/vendor/jruby/lib/jni -Xbootclasspath/a:/usr/share/logstash/vendor/jruby/lib/jruby.jar -classpath : -Djruby.home=/usr/share/logstash/vendor/jruby -Djruby.lib=/usr/share/logstash/vendor/jruby/lib -Djruby.script=jruby -Djruby.shell=/bin/sh org.jruby.Main /usr/share/logstash/lib/bootstrap/environment.rb logstash/runner.rb