Re: Query on SoftUpdateDocument API

Hi Abhishek,

Actually softUpdate is about doing an update where the deletion is
performed via a soft delete rather than a hard delete.

To perform doc-value updates, you need to use the updateNumericDocValue or
updateBinaryDocValue APIs.

Note that it doesn't actually update in-place, it needs to rewrite doc
values for the updated field for the entire segment containing the updated
doc (similarly to deletes). It's still often more efficient than a regular
update.

Le ven. 21 févr. 2025, 20:15, Abhishek Chandran <
[email protected]> a écrit :

> Hello, Lucene community!
>
> I am reaching out to you to seek help with one of the updated APIs.
>
> I have a use case where I need to update the Lucene document's docValue
> fields in place, i.e., without creating a new document with every update. I
> believe softUpdateDocument should help me achieve this, but I'm a bit
> confused about the documentation,
>
> These are the questions I have:
>
> 1. Does the softUpdateDocument API create a new document with every new
> update? If so, how is it different from the updateDocument API? Is this the
> correct API for my use case, where I don't have to increase the segment
> size because of a huge influx of docValue updates?
>
> 2. The softUpdateDocument takes two arguments: a Document and varargs of
> type Field. If my Document consists of different types of fields (string,
> docValues, text), should I send in the same document with all the fields or
> create a new document with only the supporting docValue fields?
>
> I hope to hear from you soon.
>
> Thank you so much!
>
> -Abhishek
>