kvrocks2redis can't sync flush commands

[iushas]

Search before asking

• I had searched in the issues and found no similar issues.

Version

unstable 70fac37 Fri Feb

Minimal reproduce step

master -> slave -> kvrocks2redis -> target

1、master flush
2、aof only write one del command

What did you expect to see?

write flushcommand to aof file

What did you see instead?

aof only write one del command

Anything Else?

No response

Are you willing to submit a PR?

• I'm willing to submit a PR!

[git-hulk]

@iushas Thanks for your report, will take a look soon.

[iushas]

@iushas Thanks for your report, will take a look soon.

if put kvrocks2redis with master node ，result is In line with expectations ，all namespace aof file generate one flushdb command

[git-hulk]

Got your point, that said this issue only happened while syncing from the replica node and works well in the master node.

[iushas]

Got your point, that said this issue only happened while syncing from the replica node and works well in the master node.

yes, Not sure if there are any other commands that would have this problem

[git-hulk]

Got your point, that said this issue only happened while syncing from the replica node and works well in the master node.

yes, Not sure if there are any other commands that would have this problem

It's caused by the rocksdb's DeleteRange API which we didn't implement the batch extractor. And for parsing from the master node should have the same issue, guess the FLUSHDB you seen is the kvrocks2redis will send the FLUSHDB command first before parsing the full DB.

AFAIK, the DeleteRange API is only used in FLUSHDB/FLUSHALL command, so it should only affect those two.