Some questions when I start project in standalone

[azhsmesos]

• First.
  I found that tables would be deleted for no reason. For example, I created table a on the first day, then killed the process, and found that the table did not exist when I queried it on the second day

• Second.

2022-11-25T02:34:47.261949Z  INFO log_store::fs::log: Log store active log file: 00000000000000000000.log
2022-11-25T02:34:47.262087Z  INFO log_store::fs::file: Flush task started: 00000000000000000000.log
2022-11-25T02:34:47.262175Z  INFO log_store::fs::log: Successfully started current active file: 00000000000000000000.log
2022-11-25T02:34:47.268038Z ERROR storage::region::writer: Sequence should not decrease during replay, found 1 <= 3, region_id: 0, region_name: 0_0000000000, flushed_sequence: 0, num_requests: 4
2022-11-25T02:34:50.242181Z  INFO log_store::fs::file: Stopping log file 00000000000000000000.log
2022-11-25T02:34:50.242365Z ERROR greptime: Fatal error occurs! err.msg=Failed to start datanode, source: Failed to access catalog, source: Failed to open system catalog table, source: Failed to open region, region: 0_0000000000, source: Sequence of region should increase monotonically (3 > 1) err.code=Internal err.source=Failed to access catalog, source: Failed to open system catalog table, source: Failed to open region, region: 0_0000000000, source: Sequence of region should increase monotonically (3 > 1) err.source.sources=[Failed to open system catalog table, source: Failed to open region, region: 0_0000000000, source: Sequence of region should increase monotonically (3 > 1), Failed to open region, region: 0_0000000000, source: Sequence of region should increase monotonically (3 > 1), Sequence of region should increase monotonically (3 > 1)] err.backtrace= 0 backtrace::backtrace::libunwind::trace::hf2d887c9c7b89b87

when I run cargo run -- standalone start I get these errors

[killme2008]

What's the configuration of your instance? Are u using the default setup?
GreptimeDB is using /tmp folder as WAL and data directories by default, it's only for testing.
You must specify the storage paths if you want to persist the data, refer to https://docs.greptime.com/user-guide/deployments/configuration#storage-options for details.

[tisonkun]

Closed as no response.