[
https://issues.apache.org/jira/browse/LUCENE-5177?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13741714#comment-13741714
]
Yonik Seeley commented on LUCENE-5177:
--------------------------------------
bq. why would have fields defined you arent using?
Why not? Other fields take no resources if you don't use them, but docvalues do.
Dynamic fields represent an almost infinite number of fields you aren't using
until you do.
BTW, this is why the only uses of docvalues in the example schema are commented
out. Who want's to incur index overhead for fields you aren't even using?
If we want anything other than 0 for a value for "missing", we must do it in
DocValues.
> remove fieldcache weakmap or at least see what relies on GC for purging today
> -----------------------------------------------------------------------------
>
> Key: LUCENE-5177
> URL: https://issues.apache.org/jira/browse/LUCENE-5177
> Project: Lucene - Core
> Issue Type: Test
> Reporter: Robert Muir
> Attachments: LUCENE-5177.patch
>
>
> If we are registering close listeners why does this need to be weak?
> But really i dont care about that, here is what i said to Hoss on the solr
> mailing list:
> {quote}
> > (In any case: it looks like a WeakHashMap is still used in case the
> > listeners never get called, correct?)
> >
> I think it might be the other way around: i think it was weakmap
> before always, the close listeners were then added sometime in 3.x
> series, so we registered purge events "as an optimization".
> But one way to look at it is: readers should really get closed, so why
> have the weak map and not just a regular hashmap.
> Even if we want to keep the weak map (seriously i dont care, and i
> dont want to be the guy fielding complaints on this), I'm going to
> open with an issue with a patch that removes it and fails tests in
> @afterclass if there is any entries. This way its totally clear
> if/when/where anything is "relying on GC" today here and we can at
> least look at that.
> {quote}
--
This message is automatically generated by JIRA.
If you think it was sent incorrectly, please contact your JIRA administrators
For more information on JIRA, see: http://www.atlassian.com/software/jira
---------------------------------------------------------------------
To unsubscribe, e-mail: [email protected]
For additional commands, e-mail: [email protected]
