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https://issues.apache.org/jira/browse/CASSANDRA-15393?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17185732#comment-17185732
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Michael Semb Wever commented on CASSANDRA-15393:
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We have been strict on the 4.0 feature freeze and are now in the 4.0-beta phase.
With the agreed upon release lifecycle: I struggle with the justification for
putting this into 4.0.0, regardless of the improvements the patch brings.
If it met the criteria to go into 3.11.x then 4.0-beta is obvious. But it's not
a bug, and neither a stability/performance improvement on a 4.0 introduced
feature. Isn't this how we should be triaging all tickets from here to 4.0-rc.
{quote}The C* project has a problem with favoring rewrites in favor of
incremental improvements.
{quote}
Totally agree with you [~bdeggleston]. I would definitely vote for the
incremental approach, but starting in 4.0.x or 4.1. Especially after we have a
better QA/test process spec'd out during the 4.0-beta phase.
{quote}The 4.0.x line is going to be around for a while…
{quote}
[~maedhroz], that's not an argument in itself to waiver this patch into
4.0-beta, and sets the precedence for feature creep.
Can I suggest this needs to be raised on dev ML to get a waiver for 4.0-beta?
> Add byte array backed cells
> ---------------------------
>
> Key: CASSANDRA-15393
> URL: https://issues.apache.org/jira/browse/CASSANDRA-15393
> Project: Cassandra
> Issue Type: Sub-task
> Components: Local/Compaction
> Reporter: Blake Eggleston
> Assignee: Blake Eggleston
> Priority: Normal
> Fix For: 4.0-beta
>
> Time Spent: 20m
> Remaining Estimate: 0h
>
> We currently materialize all values as on heap byte buffers. Byte buffers
> have a fairly high overhead given how frequently they’re used, and on the
> compaction and local read path we don’t do anything that needs them. Use of
> byte buffer methods only happens on the coordinator. Using cells that are
> backed by byte arrays instead in these situations reduces compaction and read
> garbage up to 22% in many cases.
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