RFR: Updates to the JBS section of the OpenJDK Dev Guide [v3]

[Joe Darcy]

On Mon, 8 May 2023 22:50:20 GMT, calnan <duke at openjdk.org> wrote:

>> Added overview on triaging issues, the bug states and process.
>
> calnan has updated the pull request incrementally with one additional commit since the last revision:
> 
>   Updates to address current round of feedback

src/guide/jbs-jdk-bug-system.md line 94:

> 92: To find out which component to use for different bugs, consult the [directory to area mapping](#directory-to-area-mapping).
> 93: 
> 94: ### Implementing a Large Change

Hmm. I don't think I entirely agree with the guidance here.

I've often used subtasks of a bug/enhancement to break the work into logical pieces (e.g. porting FDLIBM JDK-8171407) or partitioning work along review/maintenance domains (e.g. JDK-8231641: Suppress warnings on non-serializable non-transient instance fields in JDK libraries (umbrella)).

I think such usages work with the features of JBS in terms of allowing an easy estimate of how much of the umbrella bug is left to do and looser connections between the cloud of issues obscures the intent of what is going on.

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PR Review Comment: https://git.openjdk.org/guide/pull/100#discussion_r1188043272