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From ctarg...@apache.org
Subject [2/2] lucene-solr:branch_7x: SOLR-112476: add 7.4 upgrade notes for Ref Guide
Date Mon, 11 Jun 2018 19:33:39 GMT
SOLR-112476: add 7.4 upgrade notes for Ref Guide


Project: http://git-wip-us.apache.org/repos/asf/lucene-solr/repo
Commit: http://git-wip-us.apache.org/repos/asf/lucene-solr/commit/5f6677e9
Tree: http://git-wip-us.apache.org/repos/asf/lucene-solr/tree/5f6677e9
Diff: http://git-wip-us.apache.org/repos/asf/lucene-solr/diff/5f6677e9

Branch: refs/heads/branch_7x
Commit: 5f6677e95e0f7c8ccdd25bd2afa9987e9736fbf5
Parents: 35c63f6
Author: Cassandra Targett <ctargett@apache.org>
Authored: Mon Jun 11 14:32:01 2018 -0500
Committer: Cassandra Targett <ctargett@apache.org>
Committed: Mon Jun 11 14:33:31 2018 -0500

----------------------------------------------------------------------
 solr/solr-ref-guide/src/solr-upgrade-notes.adoc | 20 ++++++++++++++++++++
 1 file changed, 20 insertions(+)
----------------------------------------------------------------------


http://git-wip-us.apache.org/repos/asf/lucene-solr/blob/5f6677e9/solr/solr-ref-guide/src/solr-upgrade-notes.adoc
----------------------------------------------------------------------
diff --git a/solr/solr-ref-guide/src/solr-upgrade-notes.adoc b/solr/solr-ref-guide/src/solr-upgrade-notes.adoc
index ffbcd0a..49cf11b 100644
--- a/solr/solr-ref-guide/src/solr-upgrade-notes.adoc
+++ b/solr/solr-ref-guide/src/solr-upgrade-notes.adoc
@@ -27,6 +27,20 @@ Detailed steps for upgrading a Solr cluster are in the section <<upgrading-a-sol
 
 == Upgrading to 7.x Releases
 
+=== Solr 7.4
+
+See the https://wiki.apache.org/solr/ReleaseNote74[7.4 Release Notes] for an overview of
the main new features in Solr 7.4.
+
+When upgrading to Solr 7.4, users should be aware of the following major changes from v7.3:
+
+* Solr now uses Log4j v2.11. The Log4j configuration is now in `log4j2.xml` rather than `log4j.properties`
files. This is a server side change only and clients using SolrJ won't need any changes. Clients
can still use any logging implementation which is compatible with SLF4J. We now let Log4j
handle rotation of solr logs at startup, and `bin/solr` start scripts will no longer attempt
this nor move existing console or garbage collection logs into `logs/archived` either. See
<<configuring-logging.adoc#configuring-logging,Configuring Logging>> for more
details about Solr logging.
+
+* Configuring `slowQueryThresholdMillis` now logs slow requests to a separate file named
`solr_slow_requests.log`. Previously they would get logged in the `solr.log` file.
+
+* In the <<index-replication.adoc#index-replication,master-slave model>> of scaling
Solr, a slave no longer commits an empty index when a completely new index is detected on
master during replication. To return to the previous behavior pass `false` to `skipCommitOnMasterVersionZero`
in the slave section of replication handler configuration, or pass it to the `fetchindex`
command.
+
+If you are upgrading from a version earlier than Solr 7.3, please see previous version notes
below.
+
 === Solr 7.3
 
 See the https://wiki.apache.org/solr/ReleaseNote73[7.3 Release Notes] for an overview of
the main new features in Solr 7.3.
@@ -55,6 +69,8 @@ This means to upgrade to Solr 8 in the future, you will need to be on Solr
7.3 o
 
 * The top-level `<highlighting>` element in `solrconfig.xml` is now officially deprecated
in favour of the equivalent `<searchComponent>` syntax. This element has been out of
use in default Solr installations for several releases already.
 
+If you are upgrading from a version earlier than Solr 7.2, please see previous version notes
below.
+
 === Solr 7.2
 
 See the https://wiki.apache.org/solr/ReleaseNote72[7.2 Release Notes] for an overview of
the main new features in Solr 7.2.
@@ -75,6 +91,8 @@ For example, `{!prefix f=myfield v=enterp}` or `\_query_:"{!prefix f=myfield
v=e
 +
 If you need full backwards compatibility for the time being, use `luceneMatchVersion=7.1.0`
or something earlier.
 
+If you are upgrading from a version earlier than Solr 7.1, please see previous version notes
below.
+
 === Solr 7.1
 
 See the https://wiki.apache.org/solr/ReleaseNote71[7.1 Release Notes] for an overview of
the main new features of Solr 7.1.
@@ -104,6 +122,8 @@ See the section <<metrics-reporting.adoc#shard-and-cluster-reporters,Shard
and C
 
 * In the XML query parser (`defType=xmlparser` or `{!xmlparser ... }`) the resolving of external
entities is now disallowed by default.
 
+If you are upgrading from a version earlier than Solr 7.0, please see <<major-changes-in-solr-7.adoc#major-changes-in-solr-7,Major
Changes in Solr 7>> before starting your upgrade.
+
 == Upgrading to 7.x from Any 6.x Release
 
 The upgrade from Solr 6.x to Solr 7.0 introduces several *major* changes that you should
be aware of before upgrading. Please do a thorough review of the section <<major-changes-in-solr-7.adoc#major-changes-in-solr-7,Major
Changes in Solr 7>> before starting your upgrade.


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