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@ -1,6 +1,487 @@ |
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<!-- doc/src/sgml/release-9.2.sgml --> |
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<!-- See header comment in release.sgml about typical markup --> |
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<sect1 id="release-9-2-9"> |
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<title>Release 9.2.9</title> |
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<note> |
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<title>Release Date</title> |
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<simpara>2014-07-24</simpara> |
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</note> |
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<para> |
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This release contains a variety of fixes from 9.2.8. |
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For information about new features in the 9.2 major release, see |
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<xref linkend="release-9-2">. |
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</para> |
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<sect2> |
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<title>Migration to Version 9.2.9</title> |
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<para> |
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A dump/restore is not required for those running 9.2.X. |
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</para> |
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<para> |
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However, this release corrects an index corruption problem in some GiST |
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indexes. See the first changelog entry below to find out whether your |
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installation has been affected and what steps you should take if so. |
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</para> |
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<para> |
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Also, if you are upgrading from a version earlier than 9.2.6, |
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see <xref linkend="release-9-2-6">. |
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</para> |
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</sect2> |
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<sect2> |
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<title>Changes</title> |
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<itemizedlist> |
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<listitem> |
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<para> |
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Correctly initialize padding bytes in <filename>contrib/btree_gist</> |
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indexes on <type>bit</> columns (Heikki Linnakangas) |
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</para> |
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<para> |
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This error could result in incorrect query results due to values that |
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should compare equal not being seen as equal. |
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Users with GiST indexes on <type>bit</> or <type>bit varying</> |
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columns should <command>REINDEX</> those indexes after installing this |
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update. |
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</para> |
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</listitem> |
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<listitem> |
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<para> |
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Protect against torn pages when deleting GIN list pages (Heikki |
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Linnakangas) |
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</para> |
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<para> |
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This fix prevents possible index corruption if a system crash occurs |
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while the page update is being written to disk. |
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</para> |
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</listitem> |
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<listitem> |
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<para> |
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Don't clear the right-link of a GiST index page while replaying |
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updates from WAL (Heikki Linnakangas) |
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</para> |
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<para> |
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This error could lead to transiently wrong answers from GiST index |
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scans performed in Hot Standby. |
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</para> |
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</listitem> |
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<listitem> |
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<para> |
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Fix corner-case infinite loop during insertion into an SP-GiST text |
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index (Tom Lane) |
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</para> |
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</listitem> |
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<listitem> |
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<para> |
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Fix feedback status when <xref linkend="guc-hot-standby-feedback"> is |
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turned off on-the-fly (Simon Riggs) |
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</para> |
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</listitem> |
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<listitem> |
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<para> |
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Fix possibly-incorrect cache invalidation during nested calls |
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to <function>ReceiveSharedInvalidMessages</> (Andres Freund) |
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</para> |
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</listitem> |
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<listitem> |
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<para> |
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Fix planner's mishandling of nested PlaceHolderVars generated in |
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nested-nestloop plans (Tom Lane) |
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</para> |
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<para> |
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This oversight could result in <quote>variable not found in subplan |
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target lists</> errors, or in silently wrong query results. |
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</para> |
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</listitem> |
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<listitem> |
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<para> |
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Fix <quote>could not find pathkey item to sort</> planner failures |
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with <literal>UNION ALL</> over subqueries reading from tables with |
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inheritance children (Tom Lane) |
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</para> |
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</listitem> |
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<listitem> |
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<para> |
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Don't assume a subquery's output is unique if there's a set-returning |
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function in its targetlist (David Rowley) |
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</para> |
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<para> |
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This oversight could lead to misoptimization of constructs |
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like <literal>WHERE x IN (SELECT y, generate_series(1,10) FROM t GROUP |
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BY y)</literal>. |
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</para> |
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</listitem> |
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<listitem> |
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<para> |
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Improve planner to drop constant-NULL inputs |
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of <literal>AND</>/<literal>OR</> when possible (Tom Lane) |
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</para> |
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<para> |
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This change fixes some cases where the more aggressive parameter |
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substitution done by 9.2 and later can lead to a worse plan than |
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older versions produced. |
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</para> |
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</listitem> |
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<listitem> |
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<para> |
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Fix identification of input type category in <function>to_json()</> |
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and friends (Tom Lane) |
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</para> |
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<para> |
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This is known to have led to inadequate quoting of <type>money</> |
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fields in the <type>JSON</> result, and there may have been wrong |
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results for other data types as well. |
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</para> |
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</listitem> |
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<listitem> |
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<para> |
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Fix failure to detoast fields in composite elements of structured |
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types (Tom Lane) |
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</para> |
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<para> |
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This corrects cases where TOAST pointers could be copied into other |
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tables without being dereferenced. If the original data is later |
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deleted, it would lead to errors like <quote>missing chunk number 0 |
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for toast value ...</> when the now-dangling pointer is used. |
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</para> |
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</listitem> |
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<listitem> |
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<para> |
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Fix <quote>record type has not been registered</> failures with |
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whole-row references to the output of Append plan nodes (Tom Lane) |
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</para> |
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</listitem> |
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<listitem> |
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<para> |
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Fix possible crash when invoking a user-defined function while |
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rewinding a cursor (Tom Lane) |
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</para> |
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</listitem> |
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<listitem> |
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<para> |
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Fix query-lifespan memory leak while evaluating the arguments for a |
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function in <literal>FROM</> (Tom Lane) |
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</para> |
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</listitem> |
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<listitem> |
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<para> |
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Fix session-lifespan memory leaks in regular-expression processing |
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(Tom Lane, Arthur O'Dwyer, Greg Stark) |
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</para> |
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</listitem> |
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<listitem> |
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<para> |
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Fix data encoding error in <filename>hungarian.stop</> (Tom Lane) |
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</para> |
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</listitem> |
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<listitem> |
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<para> |
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Prevent foreign tables from being created with OIDS |
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when <xref linkend="guc-default-with-oids"> is true |
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(Etsuro Fujita) |
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</para> |
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</listitem> |
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<listitem> |
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<para> |
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Fix liveness checks for rows that were inserted in the current |
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transaction and then deleted by a now-rolled-back subtransaction |
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(Andres Freund) |
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</para> |
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<para> |
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This could cause problems (at least spurious warnings, and at worst an |
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infinite loop) if <command>CREATE INDEX</> or <command>CLUSTER</> were |
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done later in the same transaction. |
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</para> |
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</listitem> |
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<listitem> |
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<para> |
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Clear <structname>pg_stat_activity</>.<structfield>xact_start</> |
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during <command>PREPARE TRANSACTION</> (Andres Freund) |
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</para> |
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<para> |
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After the <command>PREPARE</>, the originating session is no longer in |
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a transaction, so it should not continue to display a transaction |
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start time. |
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</para> |
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</listitem> |
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<listitem> |
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<para> |
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Fix <command>REASSIGN OWNED</> to not fail for text search objects |
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(Álvaro Herrera) |
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</para> |
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</listitem> |
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<listitem> |
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<para> |
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Block signals during postmaster startup (Tom Lane) |
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</para> |
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<para> |
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This ensures that the postmaster will properly clean up after itself |
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if, for example, it receives <systemitem>SIGINT</> while still |
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starting up. |
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</para> |
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</listitem> |
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<listitem> |
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<para> |
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Fix client host name lookup when processing <filename>pg_hba.conf</> |
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entries that specify host names instead of IP addresses (Tom Lane) |
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</para> |
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<para> |
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Ensure that reverse-DNS lookup failures are reported, instead of just |
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silently not matching such entries. Also ensure that we make only |
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one reverse-DNS lookup attempt per connection, not one per host name |
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entry, which is what previously happened if the lookup attempts failed. |
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</para> |
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</listitem> |
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<listitem> |
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<para> |
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Allow the root user to use <literal>postgres -C variable</> and |
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<literal>postgres --describe-config</> (MauMau) |
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</para> |
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<para> |
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The prohibition on starting the server as root does not need to extend |
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to these operations, and relaxing it prevents failure |
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of <application>pg_ctl</> in some scenarios. |
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</para> |
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</listitem> |
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<listitem> |
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<para> |
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Secure Unix-domain sockets of temporary postmasters started during |
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<literal>make check</> (Noah Misch) |
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</para> |
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<para> |
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Any local user able to access the socket file could connect as the |
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server's bootstrap superuser, then proceed to execute arbitrary code as |
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the operating-system user running the test, as we previously noted in |
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CVE-2014-0067. This change defends against that risk by placing the |
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server's socket in a temporary, mode 0700 subdirectory |
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of <filename>/tmp</>. The hazard remains however on platforms where |
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Unix sockets are not supported, notably Windows, because then the |
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temporary postmaster must accept local TCP connections. |
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</para> |
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<para> |
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A useful side effect of this change is to simplify |
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<literal>make check</> testing in builds that |
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override <literal>DEFAULT_PGSOCKET_DIR</>. Popular non-default values |
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like <filename>/var/run/postgresql</> are often not writable by the |
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build user, requiring workarounds that will no longer be necessary. |
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</para> |
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</listitem> |
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<listitem> |
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<para> |
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Fix tablespace creation WAL replay to work on Windows (MauMau) |
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</para> |
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</listitem> |
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<listitem> |
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<para> |
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Fix detection of socket creation failures on Windows (Bruce Momjian) |
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</para> |
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</listitem> |
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<listitem> |
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<para> |
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On Windows, allow new sessions to absorb values of PGC_BACKEND |
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parameters (such as <xref linkend="guc-log-connections">) from the |
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configuration file (Amit Kapila) |
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</para> |
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<para> |
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Previously, if such a parameter were changed in the file post-startup, |
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the change would have no effect. |
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</para> |
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</listitem> |
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<listitem> |
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<para> |
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Properly quote executable path names on Windows (Nikhil Deshpande) |
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</para> |
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<para> |
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This oversight could cause <application>initdb</> |
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and <application>pg_upgrade</> to fail on Windows, if the installation |
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path contained both spaces and <literal>@</> signs. |
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</para> |
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</listitem> |
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<listitem> |
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<para> |
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Fix linking of <application>libpython</> on OS X (Tom Lane) |
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</para> |
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<para> |
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The method we previously used can fail with the Python library |
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supplied by Xcode 5.0 and later. |
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</para> |
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</listitem> |
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<listitem> |
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<para> |
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Avoid buffer bloat in <application>libpq</> when the server |
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consistently sends data faster than the client can absorb it |
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(Shin-ichi Morita, Tom Lane) |
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</para> |
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<para> |
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<application>libpq</> could be coerced into enlarging its input buffer |
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until it runs out of memory (which would be reported misleadingly |
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as <quote>lost synchronization with server</>). Under ordinary |
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circumstances it's quite far-fetched that data could be continuously |
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transmitted more quickly than the <function>recv()</> loop can |
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absorb it, but this has been observed when the client is artificially |
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slowed by scheduler constraints. |
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</para> |
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</listitem> |
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<listitem> |
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<para> |
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Ensure that LDAP lookup attempts in <application>libpq</> time out as |
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intended (Laurenz Albe) |
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</para> |
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</listitem> |
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<listitem> |
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<para> |
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Fix <application>ecpg</> to do the right thing when an array |
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of <type>char *</> is the target for a FETCH statement returning more |
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than one row, as well as some other array-handling fixes |
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(Ashutosh Bapat) |
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</para> |
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</listitem> |
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<listitem> |
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<para> |
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Fix <application>pg_restore</>'s processing of old-style large object |
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comments (Tom Lane) |
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</para> |
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<para> |
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A direct-to-database restore from an archive file generated by a |
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pre-9.0 version of <application>pg_dump</> would usually fail if the |
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archive contained more than a few comments for large objects. |
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</para> |
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</listitem> |
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<listitem> |
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<para> |
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Fix <application>pg_upgrade</> for cases where the new server creates |
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a TOAST table but the old version did not (Bruce Momjian) |
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</para> |
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<para> |
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This rare situation would manifest as <quote>relation OID mismatch</> |
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errors. |
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</para> |
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</listitem> |
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<listitem> |
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<para> |
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Prevent <filename>contrib/auto_explain</> from changing the output of |
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a user's <command>EXPLAIN</> (Tom Lane) |
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</para> |
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<para> |
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If <filename>auto_explain</> is active, it could cause |
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an <literal>EXPLAIN (ANALYZE, TIMING OFF)</> command to nonetheless |
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print timing information. |
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</para> |
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</listitem> |
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<listitem> |
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<para> |
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Fix query-lifespan memory leak in <filename>contrib/dblink</> |
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(MauMau, Joe Conway) |
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</para> |
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</listitem> |
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<listitem> |
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<para> |
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In <filename>contrib/pgcrypto</> functions, ensure sensitive |
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information is cleared from stack variables before returning |
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(Marko Kreen) |
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</para> |
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</listitem> |
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<listitem> |
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<para> |
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Prevent use of already-freed memory in |
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<filename>contrib/pgstattuple</>'s <function>pgstat_heap()</> |
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(Noah Misch) |
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</para> |
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</listitem> |
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<listitem> |
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<para> |
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In <filename>contrib/uuid-ossp</>, cache the state of the OSSP UUID |
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library across calls (Tom Lane) |
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</para> |
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<para> |
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This improves the efficiency of UUID generation and reduces the amount |
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of entropy drawn from <filename>/dev/urandom</>, on platforms that |
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have that. |
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</para> |
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</listitem> |
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<listitem> |
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<para> |
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Update time zone data files to <application>tzdata</> release 2014e |
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for DST law changes in Crimea, Egypt, and Morocco. |
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</para> |
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</listitem> |
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</itemizedlist> |
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</sect2> |
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</sect1> |
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<sect1 id="release-9-2-8"> |
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<title>Release 9.2.8</title> |
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@ -183,9 +664,6 @@ |
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for DST law changes in Fiji and Turkey, plus historical changes in |
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Israel and Ukraine. |
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</para> |
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<para> |
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</para> |
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</listitem> |
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</itemizedlist> |
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@ -675,9 +1153,6 @@ |
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some <application>psql</> <literal>\d</> commands |
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(Peter Eisentraut, Tom Lane) |
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</para> |
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<para> |
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</para> |
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</listitem> |
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<listitem> |
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@ -3249,9 +3724,6 @@ |
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Improve selectivity estimation for text search queries involving |
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prefixes, i.e. <replaceable>word</><literal>:*</> patterns (Tom Lane) |
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</para> |
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<para> |
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</para> |
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</listitem> |
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<listitem> |
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Tom Lane
11 years ago