I am running Elasticsearch 2.1.0 on localhost:9200. What I need to do is read from an index using Java for ES, without having to create a node, because I care about the speed of my application. The following is my code:
try (Client client = TransportClient.builder().build()
.addTransportAddress(new InetSocketTransportAddress(InetAddress.getLocalHost(), 9200))
.addTransportAddress(new InetSocketTransportAddress(InetAddress.getLocalHost(), 9200))) {
QueryBuilder qb = matchQuery(
...
);
CountResponse response;
response = client.prepareCount(indexName)
.setTypes(spammerType).setQuery(qb)
.execute()
.actionGet();
}
However, I am getting the following error:
Exception in thread "main" NoNodeAvailableException[None of the configured nodes are available: [{#transport#-1}{127.0.0.1}{localhost/127.0.0.1:9200}]]
But I'm trying to avoid creating a node because as I mentioned before, I need my application to be as fast as possible in reading from the index. According to ES:
There are uses-cases for both clients:
The transport client is ideal if you want to decouple your application
from the cluster. For example, if your application quickly creates and
destroys connections to the cluster, a transport client is much
"lighter" than a node client, since it is not part of a cluster.Similarly, if you need to create thousands of connections, you don’t
want to have thousands of node clients join the cluster. The TC will
be a better choice.On the flipside, if you need only a few long-lived, persistent
connection objects to the cluster, a node client can be a bit more
efficient since it knows the cluster layout. But it ties your
application into the cluster, so it may pose problems from a firewall
perspective.
How can I fix the error?? Thanks.