First, 2 nodes is not a good number for distributed systems, so you must
take extra care that you write to the index with write consistency "full".
Otherwise, your system will be easily exposed to receive split brains, you
get all kind of difficulties, missing documents etc.

Second, check your log files for disconnects and out of memory or other
exceptions. This might give you enough hints about the resources you have
allocated to ES so you can fix the problem.

Third, it would be helpful if you describe your configuration how you index
and what versions you use.

Jörg


On Mon, Aug 18, 2014 at 10:29 PM, IronMan2014 <[email protected]> wrote:

> I saw this problem twice now.
> I start with a Green two-node cluster, default 5 shards/node, I index
> about 50,000 docs, shards/replicas look great and well balanced across the
> 2 nodes.
>
> I try the same test with 8 million docs. I come back when its done, and I
> see all primary shards on node1 and 2 replicas on node2 and three
> unassigned replicas on a third "unassigned" node.
>
> I will look through the logs, but I was wondering if anyone has seen
> something similar or has any idea where/why this is coming from before I
> dig?
>
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