I install Elasticsearch 6.2.4 by .rpm (elasticsearch-6.2.4.rpm) for testing purpose.
After installation, elasticsearch service running normally and no error log found in /var/log/elasticsearch.log
However, there are lots of message keep printing in gc.log.0.current as below,
2018-06-11T05:57:52.786+0000: 2.883: [GC (Allocation Failure) 2018-06-11T05:57:52.786+0000: 2.883: [ParNew Desired survivor size 8716288 bytes, new threshold 6 (max 6) - age 1: 4236992 bytes, 4236992 total : 147899K->6846K(153344K), 0.0517700 secs] 147899K->10243K(1031552K), 0.0518839 secs] [Times: user=0.07 sys=0.00, real=0.05 secs] 2018-06-11T05:57:52.837+0000: 2.935: Total time for which application threads were stopped: 0.0521348 seconds, Stopping threads took: 0.0000305 seconds 2018-06-11T05:57:53.370+0000: 3.468: Total time for which application threads were stopped: 0.0129146 seconds, Stopping threads took: 0.0014676 seconds
I do not have enough knowledge to understand gc log, could you please give me some clue to these message? I am able to send log from (remote) Logstash to Elasticsearch and view by Kibana (Test by sending a MySQL log file from Logstash).
I want to confirm if these messages cause problem or I can ignore them. Or I will encounter issue when log traffic become huge (because I have only tested function with single log file)?
Thanks in advance for any comment,