Memory leak in SolrCloud 4.6

[Mark Houts <ma...@gmail.com>]

I am running a SolrCloud 4.6 cluster with three solr nodes and three
external zookeeper nodes. Each Solr node has 12GB RAM. 8GB RAM dedicated to
the JVM.

When solr is started it consumes barely 1GB but over the course of 36 to 48
hours physical memory will be consumed and swap will be used. The i/o
latency of using swap will soon make the machine so slow that it will
become unresponsive.

Has anyone had experience with memory leaks in this version?

Regards,

M Houts

Re: Memory leak in SolrCloud 4.6

[Emir Arnautovic <em...@sematext.com>]

Hi Mark,
Can you tell us bit more about your index and load. Why do you thing 
there is a leak? If you give that memory to JVM it will use it and you 
gave most of it to JVM. Only 4GB is left for OS and disk caches. Since 
swap is enabled, it might swap some JVM pages. It seems to me like 
completely valid scenario. Try running Solr wiith smaller heap and set 
swappines to 1. What OS do you use?

Thanks,
Emir

On 15.12.2015 06:37, Mark Houts wrote:
> I am running a SolrCloud 4.6 cluster with three solr nodes and three
> external zookeeper nodes. Each Solr node has 12GB RAM. 8GB RAM dedicated to
> the JVM.
>
> When solr is started it consumes barely 1GB but over the course of 36 to 48
> hours physical memory will be consumed and swap will be used. The i/o
> latency of using swap will soon make the machine so slow that it will
> become unresponsive.
>
> Has anyone had experience with memory leaks in this version?
>
> Regards,
>
> M Houts
>

-- 
Monitoring * Alerting * Anomaly Detection * Centralized Log Management
Solr & Elasticsearch Support * http://sematext.com/