Error in Logstash log . "Error: Disc quota exceeded"

Elastic Stack Logstash
3

We have disk space of around 40GB avaialble. And provided below how the error looks from the logstash log:
{:timestamp=>"2017-07-24T05:41:07.568000-0400", :message=>"A plugin had an unrecoverable error. Will restart this plugin.\n Plugin: <LogStash::Inputs::File type=>"Sample",
path=>["/mySampleDir/log/*"], codec=><LogStash::Codecs::Plain charset=>"UTF-8">, stat_interval=>1, discover_interval=>15, sincedb_write_inter
val=>15, start_position=>"end", delimiter=>"\n">\n Error: Disc quota exceeded", :level=>:error}

How much min/max space Logstash needs for its usage?
Do we need to specify the max size of log entries in Logstash configuration file?

Thanks in advance