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Fix ZRANGESTORE not overwrite the dst key #1609

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merged 1 commit into from
Jul 25, 2023

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When the code is doing store, it calls the add method,
which leads us to perform zadd dst xxx in disguise. And
this result the following two issues.

The first one is we do a type check against dst:

127.0.0.1:6379> set dst value
OK
127.0.0.1:6379> zrangestore dst non 0 -1
(integer) 0
127.0.0.1:6379> get dst
(nil)

127.0.0.1:6666> set dst value
OK
127.0.0.1:6666> zrangestore dst non 0 -1
(error) ERR Invalid argument: WRONGTYPE Operation against a key holding
the wrong kind of value

The second one is when dst has members, we are doing zadd:

127.0.0.1:6379> zadd dst 1 a 2 b
(integer) 2
127.0.0.1:6379> zadd src 3 c 4 d
(integer) 2
127.0.0.1:6379> zrangestore dst src 0 -1
(integer) 2
127.0.0.1:6379> zrange dst 0 -1
1) "c"
2) "d"

127.0.0.1:6666> zadd dst 1 a 2 b
(integer) 2
127.0.0.1:6666> zadd src 3 c 4 d
(integer) 2
127.0.0.1:6666> zrangestore dst src 0 -1
(integer) 2
127.0.0.1:6666> zrange dst 0 -1
1) "a"
2) "b"
3) "c"
4) "d"

ZRANGESTORE was added in #1482

When the code is doing `store`, it calls the add method,
which leads us to perform zadd dst xxx in disguise. And
this result the following two issues.

The first one is we do a type check against dst:
```
127.0.0.1:6379> set dst value
OK
127.0.0.1:6379> zrangestore dst non 0 -1
(integer) 0
127.0.0.1:6379> get dst
(nil)

127.0.0.1:6666> set dst value
OK
127.0.0.1:6666> zrangestore dst non 0 -1
(error) ERR Invalid argument: WRONGTYPE Operation against a key holding
the wrong kind of value
```

The second one is when dst has members, we are doing zadd:
```
127.0.0.1:6379> zadd dst 1 a 2 b
(integer) 2
127.0.0.1:6379> zadd src 3 c 4 d
(integer) 2
127.0.0.1:6379> zrangestore dst src 0 -1
(integer) 2
127.0.0.1:6379> zrange dst 0 -1
1) "c"
2) "d"

127.0.0.1:6666> zadd dst 1 a 2 b
(integer) 2
127.0.0.1:6666> zadd src 3 c 4 d
(integer) 2
127.0.0.1:6666> zrangestore dst src 0 -1
(integer) 2
127.0.0.1:6666> zrange dst 0 -1
1) "a"
2) "b"
3) "c"
4) "d"
```

ZRANGESTORE was added in apache#1482
@enjoy-binbin enjoy-binbin requested review from torwig and git-hulk July 25, 2023 10:06
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LGTM, good catch.

@enjoy-binbin enjoy-binbin merged commit 0e28dac into apache:unstable Jul 25, 2023
@enjoy-binbin enjoy-binbin deleted the fix_zrangestore_dst branch July 25, 2023 16:01
git-hulk pushed a commit to git-hulk/kvrocks that referenced this pull request Jul 30, 2023
When the code is doing `store`, it calls the add method,
which leads us to perform zadd dst xxx in disguise. And
this result the following two issues.

The first one is we do a type check against dst:
```
127.0.0.1:6379> set dst value
OK
127.0.0.1:6379> zrangestore dst non 0 -1
(integer) 0
127.0.0.1:6379> get dst
(nil)

127.0.0.1:6666> set dst value
OK
127.0.0.1:6666> zrangestore dst non 0 -1
(error) ERR Invalid argument: WRONGTYPE Operation against a key holding
the wrong kind of value
```

The second one is when dst has members, we are doing zadd:
```
127.0.0.1:6379> zadd dst 1 a 2 b
(integer) 2
127.0.0.1:6379> zadd src 3 c 4 d
(integer) 2
127.0.0.1:6379> zrangestore dst src 0 -1
(integer) 2
127.0.0.1:6379> zrange dst 0 -1
1) "c"
2) "d"

127.0.0.1:6666> zadd dst 1 a 2 b
(integer) 2
127.0.0.1:6666> zadd src 3 c 4 d
(integer) 2
127.0.0.1:6666> zrangestore dst src 0 -1
(integer) 2
127.0.0.1:6666> zrange dst 0 -1
1) "a"
2) "b"
3) "c"
4) "d"
```

ZRANGESTORE was added in apache#1482
@git-hulk git-hulk mentioned this pull request Jul 31, 2023
git-hulk pushed a commit that referenced this pull request Aug 1, 2023
When the code is doing `store`, it calls the add method,
which leads us to perform zadd dst xxx in disguise. And
this result the following two issues.

The first one is we do a type check against dst:
```
127.0.0.1:6379> set dst value
OK
127.0.0.1:6379> zrangestore dst non 0 -1
(integer) 0
127.0.0.1:6379> get dst
(nil)

127.0.0.1:6666> set dst value
OK
127.0.0.1:6666> zrangestore dst non 0 -1
(error) ERR Invalid argument: WRONGTYPE Operation against a key holding
the wrong kind of value
```

The second one is when dst has members, we are doing zadd:
```
127.0.0.1:6379> zadd dst 1 a 2 b
(integer) 2
127.0.0.1:6379> zadd src 3 c 4 d
(integer) 2
127.0.0.1:6379> zrangestore dst src 0 -1
(integer) 2
127.0.0.1:6379> zrange dst 0 -1
1) "c"
2) "d"

127.0.0.1:6666> zadd dst 1 a 2 b
(integer) 2
127.0.0.1:6666> zadd src 3 c 4 d
(integer) 2
127.0.0.1:6666> zrangestore dst src 0 -1
(integer) 2
127.0.0.1:6666> zrange dst 0 -1
1) "a"
2) "b"
3) "c"
4) "d"
```

ZRANGESTORE was added in #1482
p1u3o pushed a commit to p1u3o/incubator-kvrocks that referenced this pull request Aug 1, 2023
When the code is doing `store`, it calls the add method,
which leads us to perform zadd dst xxx in disguise. And
this result the following two issues.

The first one is we do a type check against dst:
```
127.0.0.1:6379> set dst value
OK
127.0.0.1:6379> zrangestore dst non 0 -1
(integer) 0
127.0.0.1:6379> get dst
(nil)

127.0.0.1:6666> set dst value
OK
127.0.0.1:6666> zrangestore dst non 0 -1
(error) ERR Invalid argument: WRONGTYPE Operation against a key holding
the wrong kind of value
```

The second one is when dst has members, we are doing zadd:
```
127.0.0.1:6379> zadd dst 1 a 2 b
(integer) 2
127.0.0.1:6379> zadd src 3 c 4 d
(integer) 2
127.0.0.1:6379> zrangestore dst src 0 -1
(integer) 2
127.0.0.1:6379> zrange dst 0 -1
1) "c"
2) "d"

127.0.0.1:6666> zadd dst 1 a 2 b
(integer) 2
127.0.0.1:6666> zadd src 3 c 4 d
(integer) 2
127.0.0.1:6666> zrangestore dst src 0 -1
(integer) 2
127.0.0.1:6666> zrange dst 0 -1
1) "a"
2) "b"
3) "c"
4) "d"
```

ZRANGESTORE was added in apache#1482
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3 participants