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Commita1ea5f5

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committed
Preserve commit order
1 parentc42c8d6 commita1ea5f5

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3 files changed

+22
-2
lines changed

3 files changed

+22
-2
lines changed

‎contrib/mmts/multimaster.c‎

Lines changed: 14 additions & 0 deletions
Original file line numberDiff line numberDiff line change
@@ -208,6 +208,7 @@ int MtmHeartbeatSendTimeout;
208208
intMtmHeartbeatRecvTimeout;
209209
boolMtmUseRaftable;
210210
boolMtmUseDtm;
211+
boolMtmPreserveCommitOrder;
211212
boolMtmVolksWagenMode;
212213

213214
TransactionIdMtmUtilityProcessedInXid;
@@ -2342,6 +2343,19 @@ _PG_init(void)
23422343
NULL
23432344
);
23442345

2346+
DefineCustomBoolVariable(
2347+
"multimaster.preserve_commit_order",
2348+
"Transactions from one node will be committed in same order al all nodes",
2349+
NULL,
2350+
&MtmPreserveCommitOrder,
2351+
true,
2352+
PGC_BACKEND,
2353+
0,
2354+
NULL,
2355+
NULL,
2356+
NULL
2357+
);
2358+
23452359
DefineCustomBoolVariable(
23462360
"multimaster.volkswagen_mode",
23472361
"Pretend to be normal postgres. This means skip some NOTICE's and use local sequences. Default false.",

‎contrib/mmts/multimaster.h‎

Lines changed: 2 additions & 1 deletion
Original file line numberDiff line numberDiff line change
@@ -58,7 +58,7 @@
5858
#defineMB (1024*1024L)
5959

6060
#defineUSEC_TO_MSEC(t) ((t)/1000)
61-
#defineMSEC_TO_USEC(t) ((t)*1000)
61+
#defineMSEC_TO_USEC(t) ((timestamp_t)(t)*1000)
6262

6363
#defineNatts_mtm_ddl_log 2
6464
#defineAnum_mtm_ddl_log_issued1
@@ -287,6 +287,7 @@ extern int MtmTransSpillThreshold;
287287
externintMtmHeartbeatSendTimeout;
288288
externintMtmHeartbeatRecvTimeout;
289289
externboolMtmUseDtm;
290+
externboolMtmPreserveCommitOrder;
290291
externHTAB*MtmXid2State;
291292
externHTAB*MtmGid2State;
292293

‎contrib/mmts/pglogical_receiver.c‎

Lines changed: 6 additions & 1 deletion
Original file line numberDiff line numberDiff line change
@@ -527,7 +527,12 @@ pglogical_receiver_main(Datum main_arg)
527527
spill_file=-1;
528528
resetStringInfo(&spill_info);
529529
}else {
530-
MtmExecute(buf.data,buf.used);
530+
if (MtmPreserveCommitOrder&&buf.used==rc-hdr_len) {
531+
/* Perform commit-prepared and rollback-prepared requested directly in receiver */
532+
MtmExecutor(nodeId,buf.data,buf.used);
533+
}else {
534+
MtmExecute(buf.data,buf.used);
535+
}
531536
}
532537
ByteBufferReset(&buf);
533538
}

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