Entry preview: Display delayed for large databases

[AEgit]

JabRef 5.0-alpha--2019-12-11--c3b7ee7
Windows 10 10.0 amd64
Java 13.0.1

In the current dev version of JabRef the entry preview is no longer displayed - it is just a white field.

[AEgit]

Ok, update to the problem: The entry preview will appear, if you wait for 5 to 10 min. This appears to be coupled with the performance problem reported here:
#5734

The entry preview reappears if you wait 5 to 10 min after starting JabRef. At the same time, the CPU load drops to zero.

[Siedlerchr]

Do you use one of the CSL styles (not the "Preview" )?

[AEgit]

No, I only use the default preview, i. e. I have made no changes to the "Current Preview" options under "Entry preview".

[Siedlerchr]

Hmm this is odd. Might be related to #5622 (comment)

[AEgit]

Update 2: Ok, so it seems I can narrow down the problem a little bit. If I use a database, that has been stored using the old release version JabRef 3.8.2 and then open it with the current developer version of JabRef 5.0, the problem appears as described above.

Now, if I save this database with the developer version of JabRef 5.0, close it, and then reopen it with the developer version of JabRef 5.0, the entry preview will still not appear immediately. But instead of having to wait 5 to 10 min, it only takes about 30 sec until the actual entry preview (instead of the white background) is shown.

[tobiasdiez]

30 sec for the preview is still too long, and the database size shouldn't matter for this.

[AEgit]

Note, that with the following older version, the entry preview is immediately displayed, irrespective of whether the database still has the old 3.8.2 format or the new 5.0 format:

JabRef 5.0-alpha--2019-12-04--5dcb565
Windows 10 10.0 amd64
Java 13.0.1

[bernhard-kleine]

with the latest dev version from today it works:
The DOI is added by editing the standard (and only) preview template.

[AEgit]

JabRef 5.0-beta.1--2019-12-14--2e056e6
Windows 10 10.0 amd64
Java 13.0.1

@bernhard-kleine Cannot confirm. With a database with nearly 20,000 entries, it takes about 30 secs before the entry preview is displayed (using the 5.0 format - with the 3.8.2 format it takes much longer as explained above). Note, that the following older development version of JabRef would display the entry preview immediately:

JabRef 5.0-alpha--2019-12-04--5dcb565
Windows 10 10.0 amd64
Java 13.0.1