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diff --git a/doc/src/sgml/html/release-15-1.html b/doc/src/sgml/html/release-15-1.html new file mode 100644 index 0000000..48c6ab2 --- /dev/null +++ b/doc/src/sgml/html/release-15-1.html @@ -0,0 +1,224 @@ +<?xml version="1.0" encoding="UTF-8" standalone="no"?> +<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd"><html xmlns="http://www.w3.org/1999/xhtml"><head><meta http-equiv="Content-Type" content="text/html; charset=UTF-8" /><title>E.5. Release 15.1</title><link rel="stylesheet" type="text/css" href="stylesheet.css" /><link rev="made" href="pgsql-docs@lists.postgresql.org" /><meta name="generator" content="DocBook XSL Stylesheets Vsnapshot" /><link rel="prev" href="release-15-2.html" title="E.4. Release 15.2" /><link rel="next" href="release-15.html" title="E.6. Release 15" /></head><body id="docContent" class="container-fluid col-10"><div class="navheader"><table width="100%" summary="Navigation header"><tr><th colspan="5" align="center">E.5. Release 15.1</th></tr><tr><td width="10%" align="left"><a accesskey="p" href="release-15-2.html" title="E.4. Release 15.2">Prev</a> </td><td width="10%" align="left"><a accesskey="u" href="release.html" title="Appendix E. Release Notes">Up</a></td><th width="60%" align="center">Appendix E. Release Notes</th><td width="10%" align="right"><a accesskey="h" href="index.html" title="PostgreSQL 15.5 Documentation">Home</a></td><td width="10%" align="right"> <a accesskey="n" href="release-15.html" title="E.6. Release 15">Next</a></td></tr></table><hr /></div><div class="sect1" id="RELEASE-15-1"><div class="titlepage"><div><div><h2 class="title" style="clear: both">E.5. Release 15.1</h2></div></div></div><div class="toc"><dl class="toc"><dt><span class="sect2"><a href="release-15-1.html#id-1.11.6.9.4">E.5.1. Migration to Version 15.1</a></span></dt><dt><span class="sect2"><a href="release-15-1.html#id-1.11.6.9.5">E.5.2. Changes</a></span></dt></dl></div><p><strong>Release date: </strong>2022-11-10</p><p> + This release contains a variety of fixes from 15.0. + For information about new features in major release 15, see + <a class="xref" href="release-15.html" title="E.6. Release 15">Section E.6</a>. + </p><div class="sect2" id="id-1.11.6.9.4"><div class="titlepage"><div><div><h3 class="title">E.5.1. Migration to Version 15.1</h3></div></div></div><p> + A dump/restore is not required for those running 15.X. + </p><p> + However, if you regularly create and drop tables exceeding 1GB, + see the first changelog entry below. + </p></div><div class="sect2" id="id-1.11.6.9.5"><div class="titlepage"><div><div><h3 class="title">E.5.2. Changes</h3></div></div></div><div class="itemizedlist"><ul class="itemizedlist" style="list-style-type: disc; "><li class="listitem"><p> + Fix failure to remove non-first segments of large tables + (Tom Lane) + </p><p> + <span class="productname">PostgreSQL</span> splits large tables into + multiple files (normally with 1GB per file). The logic for dropping + a table was broken and would miss removing all but the first such + file, in two cases: drops of temporary tables and WAL replay of + drops of regular tables. Applications that routinely create + multi-gigabyte temporary tables could suffer significant disk space + leakage. + </p><p> + Orphaned temporary-table files are removed during postmaster start, + so the mere act of updating to 15.1 is sufficient to clear any + leaked temporary-table storage. However, if you suffered any + database crashes while using 15.0, and there might have been + large tables dropped just before such crashes, it's advisable + to check the database directories for files named according to the + pattern + <code class="literal"><em class="replaceable"><code>NNNN</code></em>.<em class="replaceable"><code>NN</code></em></code>. + If there is no matching file named + just <code class="literal"><em class="replaceable"><code>NNNN</code></em></code> (without + the <code class="literal">.<em class="replaceable"><code>NN</code></em></code> suffix), these + files should be removed manually. + </p></li><li class="listitem"><p> + Fix handling of <code class="literal">DEFAULT</code> tokens that appear + in a multi-row <code class="literal">VALUES</code> clause of an + <code class="command">INSERT</code> on an updatable view (Tom Lane) + </p><p> + This oversight could lead to <span class="quote">“<span class="quote">cache lookup failed for + type</span>”</span> errors, or in older branches even to crashes. + </p></li><li class="listitem"><p> + Disallow rules named <code class="literal">_RETURN</code> that are + not <code class="literal">ON SELECT</code> (Tom Lane) + </p><p> + This avoids confusion between a view's <code class="literal">ON SELECT</code> + rule and any other rules it may have. + </p></li><li class="listitem"><p> + Avoid failure in <code class="command">EXPLAIN VERBOSE</code> for a query + using <code class="literal">SEARCH BREADTH FIRST</code> with constant + initial values (Tom Lane) + </p></li><li class="listitem"><p> + Prevent use of <code class="command">MERGE</code> on a partitioned table with + foreign-table partitions (Álvaro Herrera) + </p><p> + The case isn't supported, and previously threw an incomprehensible + error. + </p></li><li class="listitem"><p> + Fix construction of per-partition foreign key constraints while + doing <code class="command">ALTER TABLE ATTACH PARTITION</code> + (Jehan-Guillaume de Rorthais, Álvaro Herrera) + </p><p> + Previously, incorrect or duplicate constraints could be constructed + for the newly-added partition. + </p></li><li class="listitem"><p> + Fix planner failure with extended statistics on partitioned or + inherited tables (Richard Guo, Justin Pryzby) + </p><p> + Some cases failed with <span class="quote">“<span class="quote">cache lookup failed for statistics + object</span>”</span>. + </p></li><li class="listitem"><p> + Fix mis-ordering of WAL operations in fast insert path for GIN + indexes (Matthias van de Meent, Zhang Mingli) + </p><p> + This mistake is not known to have any negative consequences within + core <span class="productname">PostgreSQL</span>, but it did cause issues + for some extensions. + </p></li><li class="listitem"><p> + Fix bugs in logical decoding when replay starts from a point + between the beginning of a transaction and the beginning of its + subtransaction (Masahiko Sawada, Kuroda Hayato) + </p><p> + These errors could lead to assertion failures in debug builds, and + otherwise to memory leaks. + </p></li><li class="listitem"><p> + Accept interrupts in more places during logical decoding (Amit + Kapila, Masahiko Sawada) + </p><p> + This ameliorates problems with slow shutdown of replication workers. + </p></li><li class="listitem"><p> + Prevent attempts to replicate into a foreign-table partition in + replication workers (Shi Yu, Tom Lane) + </p><p> + Although partitioned tables can have foreign tables as partitions, + replicating into such a partition isn't currently supported. + The logical replication worker process would crash if it was + attempted. Now, an error is thrown. + </p></li><li class="listitem"><p> + Avoid crash after function syntax error in replication workers + (Maxim Orlov, Anton Melnikov, Masahiko Sawada, Tom Lane) + </p><p> + If a syntax error occurred in a SQL-language or PL/pgSQL-language + <code class="command">CREATE FUNCTION</code> or <code class="command">DO</code> command + executed in a logical replication worker, the worker process would + crash with a null pointer dereference or assertion failure. + </p></li><li class="listitem"><p> + Avoid double call of the shutdown callback of an archiver module + (Nathan Bossart, Bharath Rupireddy) + </p></li><li class="listitem"><p> + Add plan-time check for attempted access to a table that has no + table access method (Tom Lane) + </p><p> + This prevents a crash in some catalog-corruption scenarios, for + example use of a view whose <code class="literal">ON SELECT</code> rule is + missing. + </p></li><li class="listitem"><p> + Prevent postmaster crash when shared-memory state is corrupted + (Tom Lane) + </p><p> + The postmaster process is supposed to survive and initiate a + database restart if shared memory becomes corrupted, but one + bit of code was being insufficiently cautious about that. + </p></li><li class="listitem"><p> + In <span class="application">libpq</span>, handle single-row mode + correctly when pipelining (Denis Laxalde) + </p><p> + The single-row flag was not reset at the correct time if pipeline + mode was also active. + </p></li><li class="listitem"><p> + Fix <span class="application">psql</span>'s exit status when a + command-line query is canceled (Peter Eisentraut) + </p><p> + <code class="literal">psql -c <em class="replaceable"><code>query</code></em></code> would + exit successfully if the query was canceled. Fix it to exit with + nonzero status, as in other error cases. + </p></li><li class="listitem"><p> + Allow cross-platform tablespace relocation + in <span class="application">pg_basebackup</span> (Robert Haas) + </p><p> + Allow the remote path in <code class="option">--tablespace-mapping</code> to be + either a Unix-style or Windows-style absolute path, since the source + server could be on a different OS than the local system. + </p></li><li class="listitem"><p> + Fix <span class="application">pg_dump</span>'s failure to dump comments + attached to some <code class="literal">CHECK</code> constraints (Tom Lane) + </p></li><li class="listitem"><p> + Fix <code class="command">CREATE DATABASE</code> to allow + its <code class="literal">oid</code> parameter to exceed + 2<sup>31</sup> (Tom Lane) + </p><p> + This oversight prevented <span class="application">pg_upgrade</span> from + succeeding when the source installation contained databases with + OIDs larger than that. + </p></li><li class="listitem"><p> + In <span class="application">pg_stat_statements</span>, fix access to + already-freed memory (zhaoqigui) + </p><p> + This occurred if <span class="application">pg_stat_statements</span> + tracked a <code class="command">ROLLBACK</code> command issued via extended + query protocol. In debug builds it consistently led to an assertion + failure. In production builds there would often be no visible ill + effect; but if the freed memory had already been reused, the likely + result would be to store garbage for the query string. + </p></li><li class="listitem"><p> + Fix incompatibilities with LLVM 15 (Thomas Munro, Andres Freund) + </p></li><li class="listitem"><p> + Allow use of <code class="function">__sync_lock_test_and_set()</code> for + spinlocks on any machine (Tom Lane) + </p><p> + This eases porting to new machine architectures, at least if you're + using a compiler that supports this GCC builtin function. + </p></li><li class="listitem"><p> + Rename symbol <code class="literal">REF</code> to <code class="literal">REF_P</code> to + avoid compile failure on recent macOS (Tom Lane) + </p></li><li class="listitem"><p> + Avoid using <code class="function">sprintf</code>, to avoid compile-time + deprecation warnings (Tom Lane) + </p></li><li class="listitem"><p> + Update time zone data files to <span class="application">tzdata</span> + release 2022f for DST law changes in Chile, Fiji, Iran, Jordan, + Mexico, Palestine, and Syria, plus historical corrections for Chile, + Crimea, Iran, and Mexico. + </p><p> + Also, the Europe/Kiev zone has been renamed to Europe/Kyiv. + Also, the following zones have been merged into nearby, + more-populous zones whose clocks have agreed with them since 1970: + Antarctica/Vostok, Asia/Brunei, + Asia/Kuala_Lumpur, Atlantic/Reykjavik, Europe/Amsterdam, + Europe/Copenhagen, Europe/Luxembourg, Europe/Monaco, Europe/Oslo, + Europe/Stockholm, Indian/Christmas, Indian/Cocos, Indian/Kerguelen, + Indian/Mahe, Indian/Reunion, Pacific/Chuuk, Pacific/Funafuti, + Pacific/Majuro, Pacific/Pohnpei, Pacific/Wake and Pacific/Wallis. + (This indirectly affects zones that were already links to one of + these: Arctic/Longyearbyen, Atlantic/Jan_Mayen, Iceland, + Pacific/Ponape, Pacific/Truk, and Pacific/Yap.) America/Nipigon, + America/Rainy_River, America/Thunder_Bay, Europe/Uzhgorod, and + Europe/Zaporozhye were also merged into nearby zones after + discovering that their claimed post-1970 differences from those + zones seem to have been errors. + In all these cases, the previous zone name remains as an alias; + but the actual data is that of the zone that was merged into. + </p><p> + These zone mergers result in loss of pre-1970 timezone history for + the merged zones, which may be troublesome for applications + expecting consistency of <code class="type">timestamptz</code> display. As an + example, the stored value <code class="literal">1944-06-01 12:00 UTC</code> + would previously display as <code class="literal">1944-06-01 + 13:00:00+01</code> if the Europe/Stockholm zone is selected, but + now it will read out as <code class="literal">1944-06-01 14:00:00+02</code>. + </p><p> + It is possible to build the time zone data files with options that + will restore the older zone data, but that choice also inserts a lot + of other old (and typically poorly-attested) zone data, resulting in + more total changes from the previous release than accepting these + upstream changes does. <span class="productname">PostgreSQL</span> has + chosen to ship the <span class="productname">tzdb</span> data + as-recommended, and so far as we are aware most major operating + system distributions are doing likewise. However, if these changes + cause significant problems for your application, a possible solution + is to install a local build of the time zone data files using + <span class="productname">tzdb</span>'s backwards-compatibility options + (see their <code class="literal">PACKRATDATA</code> + and <code class="literal">PACKRATLIST</code> options). + </p></li></ul></div></div></div><div class="navfooter"><hr /><table width="100%" summary="Navigation footer"><tr><td width="40%" align="left"><a accesskey="p" href="release-15-2.html" title="E.4. Release 15.2">Prev</a> </td><td width="20%" align="center"><a accesskey="u" href="release.html" title="Appendix E. Release Notes">Up</a></td><td width="40%" align="right"> <a accesskey="n" href="release-15.html" title="E.6. Release 15">Next</a></td></tr><tr><td width="40%" align="left" valign="top">E.4. 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