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Avoid exiting to allow diskless loading to recover from RDB short read on module AUX data (#9199) 

Currently a replica is able to recover from a short read (when diskless loading
is enabled) and avoid crashing/exiting, replying to the master and then the rdb
could be sent again by the master for another load attempt by the replica.
There were a few scenarios that were not behaving similarly, such as when
there is no end-of-file marker, or when module aux data failed to load, which
should be allowed to occur due to a short read.

(cherry picked from commit f06d782f5a)
This commit is contained in:
Omer Shadmi 2021-07-06 08:21:17 +03:00 committed by Oran Agra
parent abd44c8393
commit 9914b676b3
1 changed files with 5 additions and 3 deletions
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8
src/rdb.c
View File

@ -2484,8 +2484,10 @@ int rdbLoadRio(rio *rdb, int rdbflags, rdbSaveInfo *rsi) {
int when_opcode = rdbLoadLen(rdb,NULL);
int when = rdbLoadLen(rdb,NULL);
if (rioGetReadError(rdb)) goto eoferr;
if (when_opcode != RDB_MODULE_OPCODE_UINT)
if (when_opcode != RDB_MODULE_OPCODE_UINT) {
rdbReportReadError("bad when_opcode");
goto eoferr;
}
moduleType *mt = moduleTypeLookupModuleByID(moduleid);
char name[10];
moduleTypeNameByID(name,moduleid);
@ -2509,7 +2511,7 @@ int rdbLoadRio(rio *rdb, int rdbflags, rdbSaveInfo *rsi) {
if (mt->aux_load(&io,moduleid&1023, when) != REDISMODULE_OK || io.error) {
moduleTypeNameByID(name,moduleid);
serverLog(LL_WARNING,"The RDB file contains module AUX data for the module type '%s', that the responsible module is not able to load. Check for modules log above for additional clues.", name);
exit(1);
goto eoferr;
}
if (io.ctx) {
moduleFreeContext(io.ctx);
@ -2518,7 +2520,7 @@ int rdbLoadRio(rio *rdb, int rdbflags, rdbSaveInfo *rsi) {
uint64_t eof = rdbLoadLen(rdb,NULL);
if (eof != RDB_MODULE_OPCODE_EOF) {
serverLog(LL_WARNING,"The RDB file contains module AUX data for the module '%s' that is not terminated by the proper module value EOF marker", name);
exit(1);
goto eoferr;
}
continue;
} else {