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new f896ad9c1fc SOLR-16693: upgrade notes (#1803)
f896ad9c1fc is described below
commit f896ad9c1fc076f193125409f1d3aac099a526ce
Author: David Smiley <[email protected]>
AuthorDate: Sun Jul 23 17:30:54 2023 -0400
SOLR-16693: upgrade notes (#1803)
Mention solr.useExitableDirectoryReader
---
.../modules/upgrade-notes/pages/major-changes-in-solr-9.adoc | 7 +++++++
1 file changed, 7 insertions(+)
diff --git
a/solr/solr-ref-guide/modules/upgrade-notes/pages/major-changes-in-solr-9.adoc
b/solr/solr-ref-guide/modules/upgrade-notes/pages/major-changes-in-solr-9.adoc
index c380fa78048..e1cd003fc69 100644
---
a/solr/solr-ref-guide/modules/upgrade-notes/pages/major-changes-in-solr-9.adoc
+++
b/solr/solr-ref-guide/modules/upgrade-notes/pages/major-changes-in-solr-9.adoc
@@ -117,6 +117,13 @@ The custom version of Solr will include this Dockerfile
when it is built.
Prior to Solr 9.3, if no corresponding entry existed the core was deleted
automatically to remove the orphaned files.
As of Solr 9.3 that behaviour is no longer enabled by default. See
xref:deployment-guide:taking-solr-to-production.adoc#unknown-core-deletion[Unknown
core deletion].
+=== use of timeAllowed
+* Query timeouts with `timeAllowed` are implemented differently.
+It should be faster albeit have less fidelity – will not timeout a query
outside of core query processing (e.g. won't cancel spellcheck or faceting).
+Use `solr.useExitableDirectoryReader` to use the previous behavior.
+Please share your experience with Solr developers!
+The previous behavior should not be enabled if timeAllowed isn't used because
unfortunately its performance tax is now imposed on all queries, even those
without timeAllowed.
+
=== v2 API
* Solr's experimental "v2" API has seen a number of improvements in the 9.3
release.
+
