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Commit76dbb46

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Protocol documentation for Hot Standby feedback messages.
1 parent02b1f84 commit76dbb46

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‎doc/src/sgml/protocol.sgml‎

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Original file line numberDiff line numberDiff line change
@@ -1471,9 +1471,9 @@ The commands accepted in walsender mode are:
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</para>
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<para>
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The receiving process can senda status updateback to the sender at
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any time, using the following messageformat (also in the payload of
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aCopyData message):
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The receiving process can sendrepliesback to the sender at any time,
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using one of the following messageformats (also in the payload of a
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CopyData message):
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</para>
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<para>
@@ -1545,6 +1545,63 @@ The commands accepted in walsender mode are:
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</varlistentry>
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</variablelist>
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</para>
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<para>
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<variablelist>
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<varlistentry>
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<term>
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Hot Standby feedback message (F)
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</term>
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<listitem>
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<para>
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<variablelist>
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<varlistentry>
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<term>
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Byte1('h')
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</term>
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<listitem>
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<para>
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Identifies the message as a Hot Standby feedback message.
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</para>
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</listitem>
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</varlistentry>
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<varlistentry>
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<term>
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Byte8
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</term>
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<listitem>
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<para>
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The server's system clock at the time of transmission,
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given in TimestampTz format.
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</para>
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</listitem>
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</varlistentry>
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<varlistentry>
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<term>
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Byte4
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</term>
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<listitem>
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<para>
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The standby's current xmin.
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</para>
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</listitem>
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</varlistentry>
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<varlistentry>
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<term>
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Byte4
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</term>
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<listitem>
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<para>
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The standby's current epoch.
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</para>
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</listitem>
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</varlistentry>
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</variablelist>
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</para>
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</listitem>
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</varlistentry>
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</variablelist>
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</para>
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</listitem>
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</varlistentry>
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