Whether the heap size of http node can be promoted to more than 32 GB?

Elastic Stack Elasticsearch
1

Hi All,

The http node is independent, and without any data. As the guide said,

50% of RAM should be assigned to Lucene.

Http node does not hold any data file, Does it mean that we can give

more heap size than 32 GB, if the node have 128 GB RAM.

The reason to do this is that there will be a bottleneck in http node

when doing big data aggregation, terms aggregation e.g.

So, we want to increase the heap size on http node. Is it feasible?

Thanks

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2

Yes, but once you get to 32GB and more the java pointers are no longer
compressed and you lose some efficiencies.
You might be able to cope with this if you have a lot of CPU power.

Also look into the G1GC, it's not currently recommended, but for larger
heap sizes it's probably worth trialing.

On 8 January 2015 at 20:43, yang ming ymbloy@gmail.com wrote:

Hi All,

The http node is independent, and without any data. As the guide said,

50% of RAM should be assigned to Lucene.

Http node does not hold any data file, Does it mean that we can give

more heap size than 32 GB, if the node have 128 GB RAM.

The reason to do this is that there will be a bottleneck in http node

when doing big data aggregation, terms aggregation e.g.

So, we want to increase the heap size on http node. Is it feasible?

Thanks

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