PIO in the past used the “transport client” of Elasticsearch, which is on port
9300 by default, The UR uses the REST client for some things like rapid writes
to ES using Spark using a lib supplied by Elasticsearch.
So, Spark needs to have config that the Elasticsearch library can read. This
can be done most easily by putting it into a sparkConf section of engine.json
Like this:
"sparkConf": {
"spark.serializer": "org.apache.spark.serializer.KryoSerializer",
"spark.kryo.registrator":
"org.apache.mahout.sparkbindings.io.MahoutKryoRegistrator",
"spark.kryo.referenceTracking": "false",
"spark.kryoserializer.buffer": "300m",
"es.index.auto.create": “true”,
“es.nodes”: “node1,node2” <========== add this
},
The list is comma separated host ip addresses of DNS names so no spaces. If you
are using the default port 9200 you don’t need to specify it. These values are
defined by Elasticsearch so see their docs if you have any question about what
can be configured in this way. For instance you can also specify password and
username in this manner.
On Apr 6, 2017, at 4:27 PM, Marius Rabenarivo <[email protected]>
wrote:
Hello,
I try to run training from a remote machine.
It fails in later stage due to this exception :
org.elasticsearch.hadoop.rest.EsHadoopNoNodesLeftException: Connection error
(check network and/or proxy settings)- all nodes failed; tried
[[engine-server:9300]]
According to the stack trace the error is coming from this line :
https://github.com/actionml/universal-recommender/blob/master/src/main/scala/EsClient.scala#L179
<https://github.com/actionml/universal-recommender/blob/master/src/main/scala/EsClient.scala#L179>
It was using a default configuration to access ES.
I tried to replace this line with :
val elasticSearchConf = Storage.getConfig("ELASTICSEARCH").get
val conf = Map(
"es.mapping.id <http://es.mapping.id/>" -> "id",
"es.nodes" -> elasticSearchConf.properties.get("HOSTS").head,
"es.port" -> elasticSearchConf.properties.get("PORTS").head
)
indexRDD.saveToEs(newIndexURI, conf)
but I still getting the same error.
Regards,
Marius
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