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Fix miscreating column families when opening with the readonly mode #1645

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merged 3 commits into from
Aug 7, 2023

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@git-hulk git-hulk commented Aug 6, 2023

Currently, kvrocks2redis will read and parse data from the local DB
with opening in read-only mode, and it will be failed if the Kvrocks
is running on the same DB dir.

The root cause is the running Kvrocks would acquire the DB lock and
kvrocks2redis would try to acquire this DB lock as well when creating
column families.

Before applying this patch:

❯ ./kvrocks2redis -c kvrocks2redis.conf
Version: unstable @6350d72
E20230806 23:46:56.435000 18548092 main.cc:151] Failed to create pidfile './kvrocks2redis.pid': File exists

After applying this patch:

❯ ./kvrocks2redis -c kvrocks2redis.conf
Version: unstable @6350d72
Start parse increment batch ...

This fixes #1644.

…only mode

Currently, kvrocks2redis will read and parse data from local DB with
openning in readonly mode, and it will be failed if the Kvrocks is
running on the same DB dir. The root cause is the running Kvrocks would
acquire the DB lock and kvrocks2redis would try to acquire this DB
lock as well when creating column familes.
@git-hulk git-hulk requested review from torwig and PragmaTwice August 6, 2023 16:11
@PragmaTwice PragmaTwice changed the title Fix shouldn't try to create column families when opening with the readonly mode Fix miscreating column families when opening with the readonly mode Aug 7, 2023
@PragmaTwice PragmaTwice merged commit 20b49b4 into apache:unstable Aug 7, 2023
p1u3o pushed a commit to p1u3o/incubator-kvrocks that referenced this pull request Aug 15, 2023
…pache#1645)

Currently, kvrocks2redis will read and parse data from the local DB
with opening in read-only mode, and it will be failed if the Kvrocks
is running on the same DB dir.

The root cause is the running Kvrocks would acquire the DB lock and
kvrocks2redis would try to acquire this DB lock as well when creating
column families.

Before applying this patch:
```shell
❯ ./kvrocks2redis -c kvrocks2redis.conf
Version: unstable @6350d72
E20230806 23:46:56.435000 18548092 main.cc:151] Failed to create pidfile './kvrocks2redis.pid': File exists
```

After applying this patch:
```shell
❯ ./kvrocks2redis -c kvrocks2redis.conf
Version: unstable @6350d72
Start parse increment batch ...
```

This fixes apache#1644.
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Failed to open Kvrocks storage when running the kvrocks2redis
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