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Fix Hot Standby feedback sending when streaming busily.

Commit6f60fdd accidentally removed acall to XLogWalRcvSendHSFeedback() after flushing received WAL to disk.The consequence is that when walsender is busy streaming WAL, it doesn'tsend HS feedback messages. One is sent if nothing is received from themaster for 100ms, but if there's a steady stream of WAL, it never happens.Backpatch to 9.3.Andres Freund and Amit Kapila

1 parent61bee9f commita472ae1Copy full SHA for a472ae1

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src/backend/replication
- walreceiver.c

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`‎src/backend/replication/walreceiver.c`

Lines changed: 3 additions & 0 deletions

Original file line number	Diff line number	Diff line change
`@@ -1007,7 +1007,10 @@ XLogWalRcvFlush(bool dying)`
`1007`	`1007`
`1008`	`1008`	`/* Also let the master know that we made some progress */`
`1009`	`1009`	`if (!dying)`
	`1010`	`+{`
`1010`	`1011`	`XLogWalRcvSendReply(false, false);`
	`1012`	`+XLogWalRcvSendHSFeedback(false);`
	`1013`	`+}`
`1011`	`1014`	`}`
`1012`	`1015`	`}`
`1013`	`1016`

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Commita472ae1

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`‎src/backend/replication/walreceiver.c`

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