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Commitb4199a9

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Release notes for 13.2, 12.6, 11.11, 10.16, 9.6.21, 9.5.25.
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‎doc/src/sgml/release-13.sgml

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<listitem>
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<!--
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Author: Thomas Munro <tmunro@postgresql.org>
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Branch: master Release: REL_13_BR [d061ea21f] 2020-01-31 17:29:38 +1300
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Branch: REL_12_STABLE [2ded1f1fb] 2020-11-20 10:51:30 +1300
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Branch: REL_11_STABLE [0455f78dd] 2020-11-20 10:52:38 +1300
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Branch: REL_10_STABLE [f5332503e] 2020-11-20 10:53:08 +1300
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-->
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<para>
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Adjust settings to make it more difficult to run out of DSM slots
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during heavy usage of parallel queries (Thomas Munro)
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</para>
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</listitem>
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<listitem>
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<!--
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Author: Fujii Masao <fujii@postgresql.org>
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Branch: master [2ad78a87f] 2021-01-15 12:44:17 +0900
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Branch: REL_13_STABLE [60369db86] 2021-01-15 12:45:25 +0900
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<listitem>
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<!--
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Author: Tom Lane <tgl@sss.pgh.pa.us>
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Branch: master [dd705a039] 2021-02-06 15:17:01 -0500
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Branch: REL_13_STABLE [4353bc878] 2021-02-06 15:17:01 -0500
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Branch: REL_12_STABLE [f73321957] 2021-02-06 15:17:01 -0500
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Branch: REL_11_STABLE [580069037] 2021-02-06 15:17:02 -0500
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Branch: REL_10_STABLE [ad85e5efa] 2021-02-06 15:17:02 -0500
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Branch: REL9_6_STABLE [7736ab05f] 2021-02-06 15:17:02 -0500
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Branch: REL9_5_STABLE [5ad03374b] 2021-02-06 15:17:02 -0500
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-->
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<para>
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Disallow converting an inheritance child table to a view
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(Tom Lane)
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</para>
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</listitem>
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<listitem>
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<!--
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Author: Thomas Munro <tmunro@postgresql.org>
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Branch: master [9f35f9437] 2020-12-01 13:21:03 +1300
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Branch: REL_13_STABLE [fd3a75d82] 2020-12-01 13:22:01 +1300
@@ -649,7 +652,7 @@ Branch: REL9_6_STABLE [8a4069766] 2020-11-28 14:03:40 -0500
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Branch: REL9_5_STABLE [60d6c7143] 2020-11-28 14:03:40 -0500
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-->
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<para>
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Fix recently-introduced raceconditions
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Fix recently-introduced racecondition
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in <command>LISTEN</command>/<command>NOTIFY</command> queue
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handling (Tom Lane)
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</para>
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A newly-listening backend could attempt to read SLRU pages that
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were in process of being truncated, possibly causing an error.
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</para>
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<para>
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In release branches before 13, the queue tail pointer could become
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set to a value that's not equal to the queue position of any
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backend, resulting in effective disabling of the queue truncation
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logic. Continued use of <command>NOTIFY</command> then led to
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queue-fill warnings, and eventually to inability to send any more
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notifies until the server is restarted.
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</para>
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