[jira] [Assigned] (NUTCH-2896) Protocol-okhttp: make connection pool configurable

["Sebastian Nagel (Jira)" <ji...@apache.org>]

     [ https://issues.apache.org/jira/browse/NUTCH-2896?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Sebastian Nagel reassigned NUTCH-2896:
--------------------------------------

    Assignee: Sebastian Nagel

> Protocol-okhttp: make connection pool configurable
> --------------------------------------------------
>
>                 Key: NUTCH-2896
>                 URL: https://issues.apache.org/jira/browse/NUTCH-2896
>             Project: Nutch
>          Issue Type: Improvement
>          Components: plugin, protocol
>    Affects Versions: 1.18
>            Reporter: Sebastian Nagel
>            Assignee: Sebastian Nagel
>            Priority: Major
>             Fix For: 1.19
>
>
> [OkHttp's ConnectionPool|https://square.github.io/okhttp/3.x/okhttp/okhttp3/ConnectionPool.html] "holds up to 5 idle connections which will be evicted after 5 minutes of inactivity."  A pool of this size is suitable for site crawls but not for larger crawls over many different sites / hosts.
> Note: in the current version (4.9.1) the connection pool is implemented as a [linked queue|https://github.com/square/okhttp/blob/parent-4.9.1/okhttp/src/main/kotlin/okhttp3/internal/connection/RealConnectionPool.kt#L83].  In order to scale beyond pool sizes exceeding 1000 we need to use a set of clients each with its own connection pool.



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