IndicesQueryCache consuming more memory causing none of the configurable nodes available exception

Elastic Stack Elasticsearch
1

Hi All,

We are facing high memory usage scenario by ES. We have allocated 6GB of memory and out of which 5GB is consumed by IndicesQueryCache$ElasticsearchLRUQueryCache.
Note - we have not configured indices.queries.cache.size, as per my understanding by default it should consume max 10% (around 0.6 GB) but surprisingly this is not the case and its consuming 5GB.
We are using ES 5.2.2 version.
Is there any known issue around this issue in this version ?
Can i control this cache usage by configuring indices.queries.cache.size to say 40%.

Please suggest.

Thanks,
Neeraj.

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