Hello,
When I change the value for "max_file_descriptors" - say to 130000 for
example - using the MAX_OPEN_FILES variable in init script, I noticed a
strange behavior. The value dispalyed through API seems correct as shown
below (ES version is 0.90.5) :
curl -XGET 'http://localhost:9200/_nodes/_local?process=true&pretty=true'
{
"ok" : true,
"cluster_name" : "es-clust",
"nodes" : {
"5PHUSFl2TmW-3yCdisBWZg" : {
"name" : "es-01",
"transport_address" : "inet[/10.0.8.107:9300]",
"hostname" : "es-01",
"version" : "0.90.5",
"http_address" : "inet[/10.0.8.107:9200]",
"attributes" : {
"master" : "true"
},
"process" : {
"refresh_interval" : 1000,
"id" : 2633,
"max_file_descriptors" : 200000
}
}
}
}
At the same time, I set the -Des.max-open-files=true JVM option to have
the value written in ES log file. This doesn't return the same value :
[2013-12-19 10:14:28,614][INFO ][bootstrap ] max_open_files
[97518]
[2013-12-19 10:14:28,727][INFO ][node ] [es-01]
version[0.90.5], pid[2633], build[c8714e8/2013-09-17T12:50:20Z]
[2013-12-19 10:14:28,733][INFO ][node ] [es-01]
initializing ...
[2013-12-19 10:14:28,742][INFO ][plugins ] [es-01] loaded
[], sites [HQ, head]
[2013-12-19 10:14:31,431][INFO ][node ] [es-01]
initialized
[2013-12-19 10:14:31,431][INFO ][node ] [es-01]
starting ...
[2013-12-19 10:14:31,528][INFO ][transport ] [es-01]
bound_address {inet[/10.0.8.107:9300]}, publish_address
{inet[/10.0.8.107:9300]}
[2013-12-19 10:14:36,095][INFO ][cluster.service ] [es-01]
new_master
[es-01][5PHUSFl2TmW-3yCdisBWZg][inet[/10.0.8.107:9300]]{master=true},
reason: zen-disco-join (elected_as_master)
[2013-12-19 10:14:36,127][INFO ][discovery ] [es-01]
es-ket/5PHUSFl2TmW-3yCdisBWZg
[2013-12-19 10:14:36,131][INFO ][http ] [es-01]
bound_address {inet[/10.0.8.107:9200]}, publish_address
{inet[/10.0.8.107:9200]}
[2013-12-19 10:14:36,132][INFO ][node ] [es-01] started
I found that the value displayed in log file never gets higher than 97518.
If I set a value under this apparent "limit" - say 75000 for instance - the
result seems (nearly) correct in log file (as well as through the API) :
[2013-12-19 10:28:38,002][INFO ][bootstrap ] max_open_files
[74975]
[2013-12-19 10:28:38,128][INFO ][node ] [es-01]
version[0.90.5], pid[2835], build[c8714e8/2013-09-17T12:50:20Z]
[2013-12-19 10:28:38,128][INFO ][node ] [es-01]
initializing ...
[2013-12-19 10:28:38,137][INFO ][plugins ] [es-01] loaded
[], sites [HQ, head]
[2013-12-19 10:28:41,019][INFO ][node ] [es-01]
initialized
[2013-12-19 10:28:41,020][INFO ][node ] [es-01]
starting ...
[2013-12-19 10:28:41,125][INFO ][transport ] [es-01]
bound_address {inet[/10.0.8.107:9300]}, publish_address
{inet[/10.0.8.107:9300]}
[2013-12-19 10:28:45,667][INFO ][cluster.service ] [es-01]
new_master
[es-01][giHKrLdWS5GDR42bnOdQjA][inet[/10.0.8.107:9300]]{master=true},
reason: zen-disco-join (elected_as_master)
[2013-12-19 10:28:45,689][INFO ][discovery ] [es-01]
es-ket/giHKrLdWS5GDR42bnOdQjA
[2013-12-19 10:28:45,694][INFO ][http ] [es-01]
bound_address {inet[/10.0.8.107:9200]}, publish_address
{inet[/10.0.8.107:9200]}
[2013-12-19 10:28:45,694][INFO ][node ] [es-01] started
So my question is, which value should I take into account ?
I assume - and hope 
- that the correct value is the one displayed
through the API but I'd like someone to confirm this.
Thank you
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- that the correct value is the one displayed