<note>

<title>Release Date</title>

<simpara>2016-??-??</simpara>

<simpara>Current as of 2016-05-05 (commit7a622b273)</simpara>

<simpara>Current as of 2016-05-08 (commit6f69b9639)</simpara>

</note>

<sect2>

<listitem>

<!--

2016-04-08 [848ef42bb] Add the "snapshot too old" feature

2016-05-06 [2cc41acd8] Fix hash index vs "snapshot too old" problemms

2016-05-06 [7e3da1c47] Mitigate "snapshot too old" performance regression on NU

-->

<para>

Allow old MVCC snapshots to be invalidated after a configurable

2016-03-31 [f9aefcb91] Support using index-only scans with partial indexes in m

-->

<para>

Allow using an index-only scan with a partialindex when the index's

predicate involves column(s) not stored in the index

(Tomas Vondra, Kyotaro Horiguchi)

Allow using an<link linkend="indexes-index-only-scans">index-only

scan</link> with a partial index when the index's predicate involves

column(s) not stored in the index(Tomas Vondra, Kyotaro Horiguchi)

</para>

<para>

An index-only scan is now allowed if the query mentions such columns

only in <literal>WHERE</> clauses that match the index predicate (and

hence need not be rechecked at runtime).

only in <literal>WHERE</> clauses that match the index predicate.

</para>

</listitem>

waiting for a heavyweight lock. Now waits for lightweight locks

and buffer pins are also shown in <structname>pg_stat_activity</>.

Also, the type of lock being waited for is now visible.

These changes replace the <structfield>waiting</> column

with <structfield>wait_event_type</> and <structfield>wait_event</>.

</para>

</listitem>

-->

<para>

Add <link linkend="view-pg-config"><structname>pg_config</></link>

system view to expose the same information available from

the <application>pg_config</> utility (Joe Conway)

system view (Joe Conway)

</para>

<para>

This view exposes the same information available from

the <application>pg_config</> utility, namely assorted compile-time

configuration information for <productname>PostgreSQL</>.

</para>

</listitem>

<para>

The number of standby servers that must acknowledge a commit before

it's considered done is now configurable.

it's considered done is now configurable as part of the

<xref linkend="guc-synchronous-standby-names"> parameter.

</para>

</listitem>

<listitem>

<!--

2016-04-08 [293007898] Reserve the "pg_" namespace for roles

2016-05-06 [a89505fd2] Remove various special checks around default roles

2016-05-08 [7df974ee0] Disallow superuser names starting with 'pg_' in initdb

-->

<para>

Treat role names beginning with <literal>pg_</> as reserved

<listitem>

<!--

2016-03-11 [6943a946c] Tsvector editing functions

2016-05-05 [0b9a23443] Rename tsvector delete() to ts_delete(), and filter() to

-->

<para>

Add new functions for <type>tsvector</> data (Stas Kelvich)

2016-04-06 [a9f0e8e5a] In pg_dump, use a bitmap to represent what to include

2016-04-06 [d217b2c36] In pg_dump, split "dump" into "dump" and "dump_contains"

2016-04-06 [23f34fa4b] In pg_dump, include pg_catalog and extension ACLs, if ch

2016-05-06 [5d589993c] pg_dump performance and other fixes

2016-05-06 [e1b120a8c] Only issue LOCK TABLE commands when necessary

-->

<para>

In <application>pg_dump</>,

<listitem>

<!--

2015-07-03 [8eb6407aa] Add psql \ev and \sv commands for editing and showing vi

2016-05-06 [9b66aa006] Fix psql's \ev and \sv commands so that they handle view

-->

<para>

Add <literal>\ev</> and <literal>\sv</> commands

2016-03-01 [7e137f846] Extend pgbench's expression syntax to support a few buil

2016-03-28 [86c43f4e2] pgbench: Support double constants and functions.

2016-05-05 [7a622b273] Rename pgbench min/max to least/greatest, and fix handli

2016-05-06 [951529948] Improve handling of numeric-valued variables in pgbench.

-->

<para>

Support floating-point arithmetic, as well as

2016-03-03 [2c83f435a] Rework PostgresNode's psql method

2016-02-26 [49148645f] Add a test framework for recovery

2016-02-26 [74d58425c] Apply last revision of recovery patch

2016-05-06 [6bd356c33] Add TAP tests for pg_dump

-->

<para>

Improve TAP testing infrastructure

(Michael Paquier, Craig Ringer, &Aacute;lvaro Herrera)

(Michael Paquier, Craig Ringer, &Aacute;lvaro Herrera, Stephen Frost)

</para>

<para>