I am running a single node (15GB RAM, half allocated on the heap) with ES
(1.2.1) and had allocated two indexes with 16 shards a piece with no
replicas. Health always reported my "cluster" in the yellow due to a lack
of replicas, but aside from that, all was well until this morning.
In total, I am hovering around 65M documents and when I checked the status
of ES this morning, it was still yellow, only I now had 5 shards per index.
All the documents appear to be in place (counts are still the same in
marvel, queries return proper totals), but how did my shard allocation
I had chosen 16 shards to allow for simple routing based on document IDs
therefore balancing out each shard for when I planned to upgrade nodes.
Despite having my data, it appears that the shards are now completely
unbalanced. I took a look in the logs when marvel showed the change, but
nothing appears to be reported.
Did ES decide to just consolidate my allocations? Is there a way to get
this back? I can't re-assign the "old" shards to a node because there is no
indication they ever existing (nothing on disk and settings says 5 shards)
and ES tells you to over-allocate to start because you can't add shards
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