[jira] [Updated] (CASSANDRA-10063) Standardize use of collections, streams, iterables, functions, predicates etc.

["Benedict (JIRA)" <ji...@apache.org>]

     [ https://issues.apache.org/jira/browse/CASSANDRA-10063?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Benedict updated CASSANDRA-10063:
---------------------------------
    Assignee:     (was: Benedict)

> Standardize use of collections, streams, iterables, functions, predicates etc.
> ------------------------------------------------------------------------------
>
>                 Key: CASSANDRA-10063
>                 URL: https://issues.apache.org/jira/browse/CASSANDRA-10063
>             Project: Cassandra
>          Issue Type: Improvement
>          Components: Core
>            Reporter: Benedict
>             Fix For: 3.x
>
>
> With the advent of Java 8 we have a lot of different mechanisms for achieving the same expression of ideas. We should standardize on (approximately) a single approach across the codebase, as this will help clarity, reduce development time (with less indecision about which set of tools to use, and how to interface between the two), and improve icache occupancy.
> The problem is exacerbated by the difficulty of interfacing between the two paradigms, and this (IMO) introduces an unnecessary cognitive burden when they inevitably meet. We should pick one and fill in whatever we're missing to make it fit all of our needs. We should perform a bit of due diligence about the implementation details of any utility methods we use also, as having dived into a handful they are occasionally.... surprising. And probably not how we would implement them (take {{Ordering.leastOf}} as an example).
> Since it is the future, I think we should be standardising on the JDK8 Streams API where possible. There are a couple of rough edges with interfacing with it in some places, but we can smooth them and the result should be much more legible code.
> This really should not be a huge amount of work, and I expect will pay dividends quite quickly.



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