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update src/gausskernel/storage/replication/logical/logical.cpp.

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maxiang
2021-05-29 10:12:08 +08:00
committed by Gitee
parent 3d4c33b931
commit 2901293d8b
1 changed files with 8 additions and 0 deletions
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8
src/gausskernel/storage/replication/logical/logical.cpp
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@ -825,6 +825,14 @@ void LogicalIncreaseRestartDecodingForSlot(XLogRecPtr current_lsn, XLogRecPtr re
*/
void LogicalConfirmReceivedLocation(XLogRecPtr lsn)
{
/*
* Check if the slot is not moving backwards. Logical slots have confirmed
* consumption up to confirmed_lsn, meaning that data older than that is
* not available anymore.
*/
if (XLByteLE(lsn, t_thrd.slot_cxt.MyReplicationSlot->data.confirmed_flush))
return;
Assert(!XLByteEQ(lsn, InvalidXLogRecPtr));
(void)LWLockAcquire(LogicalReplicationSlotPersistentDataLock, LW_EXCLUSIVE);
/* Do an unlocked check for candidate_lsn first. */