memory leak if influxdb goes down

[tsorya]

We are running influxdb plugin with config:
<match metrics.*>
@type influxdb
host 10.47.246.7
port 8086
dbname test
use_ssl false
time_key time
auto_tags
time_precision ms
retry 3

@type memory
# chunk_limit_size 524288 # 512 * 1024
# chunk_limit_records 1024
flush_interval 10
retry_limit 3
retry_wait 1.0
num_threads 1


json

when we stop influxdb we see that fluentd is leaking memory:

any ideas?

[repeatedly]

Use file buffer instead :)
This is not memory leak because you use memory buffer. It stores data in memory so this is expected behaviour.

[tsorya]

@repeatedly why it doesn't drop them after finishing retrying?

[repeatedly]

why it doesn't drop them after finishing retrying?

Your log doesn't contain any retry / drop information?