Summary: Perfomance degradation at High Load  (was: Perfomance degradation 
at Hghi Load)

> Perfomance degradation at High Load
> -----------------------------------
>                 Key: SOLR-12210
>                 URL: https://issues.apache.org/jira/browse/SOLR-12210
>             Project: Solr
>          Issue Type: Bug
>      Security Level: Public(Default Security Level. Issues are Public) 
>          Components: Hadoop Integration
>    Affects Versions: 7.2
>            Reporter: ROMAN NAZARENKO
>            Priority: Minor
> When hdfsDataFactory is used and the incoming data stream is large, the rate 
> of indexation is degraded. This is not a problem when using a local file 
> system. I think the problem is in cleaning hdfsBlockCache. Because the 
> degradation of the indexing rate occurs precisely when this cache reaches its 
> maximum value. The basis for hdfsBlockCache is caffeine cache, but it is 
> configured to clean only when the maximum size is reached. At the same time, 
> nothing prevents using timeEviction, I suggest testing the indexing speed 
> using this type of cache cleaning.

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