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Slower RESTORE_VIEW Phase on Mojarra 20.3 [message #1832706]

Wed, 23 September 2020 15:46

Wafa Mlika

Messages: 1
Registered: September 2020

Junior Member

Hi community,
Upgrading my project from Mojarra 2.2.13 to Mojarra 2.3.9 has significantly slowed down the RESTORE_VIEW Phase for pages with heavy component tree.
The performance was a way better on 2.2.13, the execution time went from < 1s to > 10s

From java flight record for Mojarra 2.3.9, the com.sun.faces.facelets.tag.jsf.ComponentSupport.findChildByTagId could be the source of the problem :
index.php/fa/38969/0/

When comparing implementations on both version, we can see that in 20.2 the findChildByTagId call is skipped if Pahse Id equals RESTORE_VIEW or request is not a postback :
index.php/fa/38971/0/

While in 2.3 this condition was gone. This method is called from multiple FaceletHandler in the restore view phase, so it has increased execution time for many handlers like :
index.php/fa/38970/0/