Questions about elasticsearch

Elastic Stack Elasticsearch
1

Hi all,

I use elasticsearch for some time, but I still have ideas that are not too
Clere for me, and I would like to have a Response:

if we have nodes running on different machines, how one will know the
other,how they will communicate and the notion of scalability how it will
be respected

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2

There is something called "multi casting". ES uses that to see if there are
other es instances in the network with the same cluster name.
If there is , it will join that es instance and form a cluster.

Now about scalability - Say if there are 2 instances of ES in network and
they have joined to form a cluster , when you give 1000 documents to ES to
index , it will store 500 documents in one instance and 500 documents in
another instance. Here when a query is made , the query is executed on both
the instances and result is aggregated to form the final result. Hence just
by increasing the number of instances in network , ES can work as a
distributed application and divide the load between all the nodes.

Going ahead , look into what is shards and replicas. That should give you a
complete idea.

Thanks
Vineeth

On Wed, Mar 6, 2013 at 10:36 PM, Ammar Yahia yahia.ammar.info@gmail.comwrote:

Hi all,

I use elasticsearch for some time, but I still have ideas that are not too
Clere for me, and I would like to have a Response:

if we have nodes running on different machines, how one will know the
other,how they will communicate and the notion of scalability how it will
be respected

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"elasticsearch" group.
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3

Le mercredi 6 mars 2013 18:06:31 UTC+1, Ammar Yahia a écrit :

Hi all,

I use elasticsearch for some time, but I still have ideas that are not too
Clere for me, and I would like to have a Response:

if we have nodes running on different machines, how one will know the
other,how they will communicate and the notion of scalability how it will
be respected

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4

thank you Vineeth, it's clear now

Assuming we have a client that uses a node, if the node fails, another node
will be awarded for the client?

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