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From "Furkan KAMACI (JIRA)" <>
Subject [jira] [Commented] (SOLR-5780) Solr should benefit from Guava 16.0.1
Date Sat, 01 Mar 2014 00:40:21 GMT


Furkan KAMACI commented on SOLR-5780:

I've created a patch file for approach of "keeping up to date concurrentlinkedhashmap" and
run full tests whether it has a side effect or not.

> Solr should benefit from Guava 16.0.1
> -------------------------------------
>                 Key: SOLR-5780
>                 URL:
>             Project: Solr
>          Issue Type: Improvement
>          Components: SolrCloud
>    Affects Versions: 4.7
>         Environment: All.
>            Reporter: Guido Medina
>         Attachments: SOLR-5780.patch
> Solr is using concurrentlinkedhashmap v1.2 and Guava 14.0.1 at the same time, according
to concurrentlinkedhashmap author(s), that project main objective is to introduce ideas and
then when proven they are ported to Guava.
> concurrentlinkedhashmap v1.2 was designed for Java 5 and v1.4 for Java 6+ which is the
target version Solr 4.x requires, v1.4 had a great improvement in performance and memory impact
compared to v1.2 which was ported to Guava (I strongly believe v16.0.1+ will do)
> *Pertinent material:*
> * []
> * []
> All that said, concurrentlinkedhashmap should be eliminated _- OR keep up to date becauseit
is the core of in-memory cache, same as Guava -_ and code using it should instead use MapMaker
builder from Guava.

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