I've been running ES for about a week (I'm a complete noob, I should add),
but recently it started behaving weirdly. I start elasticsearch, indices
are recovered, then it hangs for a minute or so, refusing connections, and
finally crashes with
Caught exception while handling client http traffic, closing connection
[id: 0xd6f24dd4, /10.114.30.31:58582 :> /10.204.95.154:9200]
[full stack trace] https://gist.github.com/andreasjansson/5245533
While it's hanging, this is the cluster health:
$ curl -XGET 'http://127.0.0.1:9200/_cluster/health?pretty=true'
"cluster_name" : "elasticsearch",
"status" : "red",
"timed_out" : false,
"number_of_nodes" : 1,
"number_of_data_nodes" : 1,
"active_primary_shards" : 49,
"active_shards" : 49,
"relocating_shards" : 0,
"initializing_shards" : 0,
"unassigned_shards" : 51
I use ES to store logs, using a home-built tool that sends data to ES in
logstash format, using pyes. I run it on a medium EC2 instance, with the
actual data on a mounted EBS volume. The OS is 64 bit Ubuntu 12.04, OpenJDK
Java 1.6.0_24, Elasticsearch version 0.90.0.RC1 (although the same error
occurred on 0.20.6).
The only non-default config options in elasticsearch.yml are
$ ulimit -Hn
Full DEBUG log here https://gist.github.com/andreasjansson/5245603
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