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https://issues.apache.org/jira/browse/HAMA-593?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13433139#comment-13433139
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Thomas Jungblut commented on HAMA-593:
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We could also use the CacheBuilders from Guava.
http://docs.guava-libraries.googlecode.com/git/javadoc/com/google/common/cache/CacheBuilder.html
Guava should be in our classpath.
bq. Sorry but I didn't got clues of using just LinkedHashSet for
conceptualizing LRU cache.
When sending stuff this is a sequential operation, so caching the connections
must not be synchronized. So no need to use synchronized structures. Simply
subclassing LinkedHashMap and overriding removeEldestEntry should be enough.
> Improve RPC scalability
> -----------------------
>
> Key: HAMA-593
> URL: https://issues.apache.org/jira/browse/HAMA-593
> Project: Hama
> Issue Type: Sub-task
> Components: bsp core, messaging
> Affects Versions: 0.5.0
> Reporter: Thomas Jungblut
> Attachments: HAMA-593_1.patch
>
>
> To improve scalability we can start a RPC connection after another instead of
> keeping all possible N connections open the whole time.
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