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Adjust comment about timeout when waiting for WAL at recovery

author Michael Paquier <michael@paquier.xyz>

Fri, 1 Feb 2019 01:46:45 +0000 (10:46 +0900)

committer Michael Paquier <michael@paquier.xyz>

Fri, 1 Feb 2019 01:46:45 +0000 (10:46 +0900)

A timeout of 5s is used when waiting for WAL to become available at
recovery so as the startup process is able to react promptly if a
trigger file shows up. However this missed the fact that the startup
process also relies on the timeout to check periodically the status of
any active WAL receiver.

Discussion: https://postgr.es/m/20190131070956.GE13429@paquier.xyz

src/backend/access/transam/xlog.c patch | blob | blame | history

diff --git a/src/backend/access/transam/xlog.c b/src/backend/access/transam/xlog.c

index 2ab7d804f032a60f1f23bdcdb1ad991aecd5b3a7..a9f3272849550ebe9854d20a9a72281e965f63a4 100644 (file)

--- a/src/backend/access/transam/xlog.c

+++ b/src/backend/access/transam/xlog.c

@@ -12104,7 +12104,8 @@ WaitForWALToBecomeAvailable(XLogRecPtr RecPtr, bool randAccess,

* Wait for more WAL to arrive. Time out after 5 seconds

- * to react to a trigger file promptly.

+ * to react to a trigger file promptly and to check if the

+ * WAL receiver is still active.

(void) WaitLatch(&XLogCtl->recoveryWakeupLatch,

WL_LATCH_SET | WL_TIMEOUT |

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