Hello.

I was using Elasticsearch v1.2.2 on Ubuntu 14.04 x64 with SSD. I have one 
index 'myindex' with around 100k of not so complex documents plus indices 
that Marvel generates.

Recently I started getting such kind of errors: 
https://gist.github.com/51aae04d077a53919c31
It looks like shards become unassigned after some time and fail to assign 
again.

I've taken these steps:

   - set index.routing.allocation.disable_allocation to false
   - increased heap size from 1 GB to 16 GB
   - increased number of shards
   - individual insert instead of of bulk insert
   - updated Elasticsearch from 1.2.2 to 1.3.2
   - started two instances of ES with 8 GB of heap each and 1 replica one 
   the same machine
   - deleted index
   - provided gateway.recover_after_nodes and gateway.expected_nodes 
   settings in config
   - reduced heap size to 4 GB per node

I've also noticed that shards of Marvel's indices become unassigned too.

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