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https://issues.apache.org/jira/browse/LUCENE-5095?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13701404#comment-13701404
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Robert Muir commented on LUCENE-5095:
-------------------------------------
I hesitate to pull docvalues + toString from such places, because they are lazy
loaded and with some implementations could cause things to be loaded into RAM.
but I mentioned checkindex since its going to do this to verify them anyway...
> Add useful toString()s to DocValues impls
> -----------------------------------------
>
> Key: LUCENE-5095
> URL: https://issues.apache.org/jira/browse/LUCENE-5095
> Project: Lucene - Core
> Issue Type: Task
> Reporter: Robert Muir
>
> Currently, you have no insight into what these are doing (what kind of
> compression does your numerics have, how much RAM are the datastructures
> taking up, so on.
> So I think we should add some cheap toString's (nothing heavy), things like
> {code}
> @Override
> public String toString() {
> return "Lucene42Numeric(compression=TABLE,bpv=" + bitsPerValue)";
> }
> {code}
> and so on. Maybe we could think about printing them from CheckIndex when
> verbose=true too.
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