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| author | Bruce Momjian <bruce@momjian.us> | 2016-07-02 11:22:36 -0400 |
|---|---|---|
| committer | Bruce Momjian <bruce@momjian.us> | 2016-07-02 11:22:36 -0400 |
| commit | e612181686b54a0311a85247c7f1640dee53636f (patch) | |
| tree | 580deb9c9176dd838bd7ffae510f3b37053108bd | |
| parent | 40d0bd8d5e0fa86ece5f8ad9489adab0a30dca9a (diff) | |
| download | postgresql-e612181686b54a0311a85247c7f1640dee53636f.tar.gz postgresql-e612181686b54a0311a85247c7f1640dee53636f.zip | |
doc: mention dependency on collation libraries
Document that index storage is dependent on the operating system's
collation library ordering, and any change in that ordering can create
invalid indexes.
Discussion: 20160617154311.GB19359@momjian.us
Backpatch-through: 9.1
| -rw-r--r-- | doc/src/sgml/runtime.sgml | 9 |
1 files changed, 9 insertions, 0 deletions
diff --git a/doc/src/sgml/runtime.sgml b/doc/src/sgml/runtime.sgml index fba67a37c79..cdc16c3ce5a 100644 --- a/doc/src/sgml/runtime.sgml +++ b/doc/src/sgml/runtime.sgml @@ -183,6 +183,15 @@ postgres$ <userinput>initdb -D /usr/local/pgsql/data</userinput> locale setting. For details see <xref linkend="multibyte">. </para> + <para> + Non<literal>C</> and and non-<literal>POSIX</> locales rely on the + operating system's collation library for character set ordering. + This controls the ordering of keys stored in indexes. For this reason, + a cluster cannot switch to an incompatible collation library version, + either through snapshot restore, binary streaming replication, or + <application>pg_upgrade</> run. + </para> + <sect2 id="creating-cluster-mount-points"> <title>Use of Secondary File Systems</title> |