<listitem>
<para>
- Remove system column pg_class.reltoastidxid (Michael Paquier)
+ Use the last specified recovery_target if multiple are specified (Heikki Linnakangas)
</para>
+ </listitem>
+ <listitem>
<para>
- Instead use normal index access methods.
+ Remove system column pg_class.reltoastidxid (Michael Paquier)
</para>
</listitem>
<listitem>
<para>
- Improve SSL renegotiation handling (Álvaro Herrera)
+ Allow background workers to be dynamically registered, started and terminated (Robert Haas)
</para>
- </listitem>
- <listitem>
<para>
- During immediate shutdown, send uncatchable termination signals to child processes that have not already shutdown (MauMau,
- Álvaro Herrera)
+ worker_spi_launch() in worker_spi shows an example of its use.
</para>
+ </listitem>
+ <listitem>
<para>
- This reduces the likelihood of orphaned child processes after postmaster shutdown.
+ Allow dynamic allocation of shared memory segments (Robert Haas, Amit Kapila)
</para>
</listitem>
<listitem>
<para>
- Improve randomness of the database system identifier (Tom Lane)
+ Improve SSL renegotiation handling (Álvaro Herrera)
</para>
</listitem>
<listitem>
<para>
- Allow background workers to be dynamically started and terminated (Robert Haas)
+ During immediate shutdown, send uncatchable termination signals to child processes that have not already shutdown (MauMau,
+ Álvaro Herrera)
</para>
<para>
- worker_spi_launch() in worker_spi shows an example if its use.
+ This reduces the likelihood of orphaned child processes after postmaster shutdown.
</para>
</listitem>
<listitem>
<para>
- Allow dynamic allocation of shared memory segments (Robert Haas, Amit Kapila)
+ Improve randomness of the database system identifier (Tom Lane)
</para>
</listitem>
</para>
</listitem>
+ <listitem>
+ <para>
+ Fix race condition in B-tree page deletion (Heikki Linnakangas)
+ </para>
+ </listitem>
+
+ <listitem>
+ <para>
+ Make the handling of interrupted B-tree page splits more robust (Heikki Linnakangas)
+ </para>
+ </listitem>
+
</itemizedlist>
</sect4>
</para>
<para>
- This avoids later freezing overhead.
+ This avoids the need to freeze the tuples in the future.
</para>
</listitem>
<listitem>
<para>
- Improve speed of accessing many sequence values (David Rowley)
+ Improve speed of accesessing many different sequences in the same session (David Rowley)
</para>
</listitem>
<listitem>
<para>
- Use memory barriers to avoid some spinlock use (Heikki Linnakangas)
+ Auto-resize the catalog cache (Heikki Linnakangas)
+ </para>
+
+ <para>
+ This reduces memory consumption for backends accessing only a few tables, and improves performance for backend accessing many
+ tables.
</para>
</listitem>
<listitem>
<para>
- Add huge_pages configuration parameter to attempt to use huge translation look-aside buffer (TLB) pages on Linux (Christian Kruse,
+ Add huge_pages configuration parameter to enable huge translation look-aside buffer (TLB) pages on Linux (Christian Kruse,
Richard Poole, Abhijit Menon-Sen)
</para>
</para>
</listitem>
- <listitem>
- <para>
- Add configuration variable data_checksums to report whether data page checksums are enabled (Bernd Helmle)
- </para>
- </listitem>
-
<listitem>
<para>
Add superuser-only session_preload_libraries configuration parameter to load libraries at session start (Peter Eisentraut)
</para>
</listitem>
- <listitem>
- <para>
- Use the last specified recovery_target if multiple are specified (Heikki Linnakangas)
- </para>
- </listitem>
-
<listitem>
<para>
pg_switch_xlog() now clears the trailing unused space in the WAL file (Heikki Linnakangas)
</para>
<para>
- Description? Logical only?
+ Replication slots allow preservation of resources like WAL files on the
+ primary that are needed by standby servers.
+ </para>
+ </listitem>
+
+ <listitem>
+ <para>
+ Reduce spinlock contention during WAL replay (Heikki Linnakangas)
</para>
</listitem>
<listitem>
<para>
- Improve return codes from external recovery commands (Peter Eisentraut)
+ Report failure return codes from external recovery commands (Peter Eisentraut)
</para>
</listitem>
<listitem>
<para>
- Write WAL records of running transactions every 15 seconds ? (Andres Freund)
+ Write WAL records of running transactions more frequently (Andres Freund)
+ </para>
+
+ <para>
+ This allows standby servers to start faster and cleanup resources
+ more aggressively.
</para>
</listitem>
</itemizedlist>
<sect4>
- <title>Logical Change-Set Encoding</title>
+ <title>Logical Change-Set Extraction</title>
+
+ <para>
+ The new Logical change-set extraction feature allows database
+ changes to be optionally recorded in <emphasis>logical</> format
+ in the WAL. This format can be easily processed by external tools.
+ In previous releases, only binary changes were recorded in the
+ WAL. To implement this feature, the following changes were made:
+ </para>
<itemizedlist>
<listitem>
<para>
- Allow security barrier views automatically updateable (Dean Rasheed)
+ Allow security barrier views to be automatically updateable (Dean Rasheed)
</para>
</listitem>
<listitem>
<para>
- Add structured (non-text) data type (jsonb) for storing JSON data (Oleg Bartunov, Teodor Sigaev, Peter Geoghegan and Andrew Dunstan)
+ Add structured (non-text) data type (jsonb) for storing JSON data (Oleg Bartunov, Teodor Sigaev,
+ Alexander Korotkov, Peter Geoghegan, and Andrew Dunstan)
</para>
<para>
- This data type allows faster indexing and access to json keys/value pairs.
+ This data type allows for faster indexing and access to json key/value
+ pairs, as well as efficient indexing of all key/value pairs in a JSON document.
</para>
</listitem>
<listitem>
<para>
- Add functions pg_filenode_relation() and pg_relation_filepath() to do relation/relfilenode conversions (Andres Freund)
- </para>
-
- <para>
- These use a new pg_class index to speed lookups.
+ Add function pg_filenode_relation() to allow for more efficient
+ filenode to relation lookups (Andres Freund)
</para>
</listitem>
<listitem>
<para>
- Improve the way tuples are frozen, to preserve forensic information ((Robert Haas, Andres Freund)
+ Improve the way tuples are frozen, to preserve forensic information (Robert Haas, Andres Freund)
</para>
<para>
- Code that inspects tuple flag bits will need to be modified
- </para>
- </listitem>
-
- <listitem>
- <para>
- Auto-resize the catalog cache (Heikki Linnakangas)
- </para>
-
- <para>
- This reduces memory consumption for backends accessing only a few tables, and improves performance for backend accessing many
- tables.
+ Code that inspects tuple flag bits will need to be modified.
</para>
</listitem>
</para>
<para>
- All existing uses have been switched to more appropriate snapshot types.
+ All existing uses have been switched to more appropriate snapshot
+ types. Catalog scans now use MVCC snapshots.
</para>
</listitem>
<listitem>
<para>
- Use an MVCC snapshot (rather than SnapshotNow) for catalog scans (Robert Haas)
</para>
</listitem>
<listitem>
<para>
- Use printf() modifier "z" to specify size_t values (Andres Freund)
+ Add printf() modifier "z" to specify size_t values (Andres Freund)
</para>
</listitem>
<listitem>
<para>
- Memory barrier changes?
+ Improve spinlock speed on x86_64 CPUs (Heikki Linnakangas)
</para>
</listitem>
<listitem>
<para>
- Improve spinlock speed on x86_64 CPUs (test on i386?) (Heikki Linnakangas)
+ Remove spinlock support for unsupported platforms SINIX, Sun3, and NS32K (Robert Haas)
</para>
</listitem>
<listitem>
<para>
- Remove spinlock support for unsupported platforms SINIX, Sun3, and NS32K (Robert Haas)
+ Remove IRIX port (Robert Haas)
</para>
</listitem>
<listitem>
<para>
- Rewrite duplicate_oids Unix hell script in Perl (Andrew Dunstan)
+ Rewrite duplicate_oids Unix shell script in Perl (Andrew Dunstan)
</para>
</listitem>
</para>
</listitem>
- <listitem>
- <para>
- Remove IRIX port (Robert Haas)
- </para>
- </listitem>
-
<listitem>
<para>
Avoid most uses of dlltool in Cygwin and Mingw builds (Marco Atzeri, Hiroshi Inoue)
projects / postgresql / blobdiff