Minor sync rep documentation improvements.
- Make the name of the ID tag for the GUC entry match the GUC name. - Clarify that synchronous_replication waits for xlog flush, not receipt. - Mention that synchronous_replication won't wait if max_wal_senders=0.
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@ -2045,9 +2045,11 @@ SET ENABLE_SEQSCAN TO OFF;
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for confirmation of successful replication. That delay will
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increase depending upon the physical distance and network activity
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between primary and standby. The commit wait will last until a
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reply from the current synchronous standby indicates it has received
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the commit record of the transaction. Synchronous standbys must
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already have been defined (see <xref linkend="guc-sync-standby-names">).
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reply from the current synchronous standby indicates it has written
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the commit record of the transaction to durable storage. This
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parameter has no effect if
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<xref linkend="guc-synchronous-standby-names"> is empty or
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<xref linkend="guc-max-wal-senders"> is zero.
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</para>
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<para>
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This parameter can be changed at any time; the
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@ -2062,7 +2064,7 @@ SET ENABLE_SEQSCAN TO OFF;
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</listitem>
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</varlistentry>
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<varlistentry id="guc-sync-standby-names" xreflabel="synchronous_standby_names">
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<varlistentry id="guc-synchronous-standby-names" xreflabel="synchronous_standby_names">
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<term><varname>synchronous_standby_names</varname> (<type>string</type>)</term>
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<indexterm>
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<primary><varname>synchronous_standby_names</> configuration parameter</primary>
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