dennis zhuang

> We need to find a way to pass region filters to datanode through substrait plans so that we don't have to iterate all regions > on some datanode. Can...

Complete backtrace and log: ``` 2022-12-02T06:14:47.655187Z ERROR servers::mysql::server: Internal error occurred during query exec, server actively close the channel to let client try next time. err.msg=Internal IO error, source: received...

@SSebo Thanks. But we still don't know the root cause, let's keep this issue open until we find out the cause.

> > Thanks, `RENAME TABLE` is really a nice feature! > > To implement the [`RENAME TABLE` statement](https://dev.mysql.com/doc/refman/8.0/en/rename-table.html), the most challenging part is to deal with the table's storage path....

> * support renaming tables in the `mito` table engine, this may require to > > * persist the change to manifest (maybe a new `MetaAction` is required) > *...

> Since the RegionChange does not contain information about the table name, and as [the documentation](https://docs.greptime.com/developer-guide/datanode/storage-engine#region) states, "Mito table engine divides a table into one or multiple regions," maybe we...

@e1ijah1 Persists the change to manifest, you can refer to https://github.com/GreptimeTeam/greptimedb/blob/develop/src/mito/src/table.rs#L362-L374 And you should update the `table_info` in `MitoTable` after persistence, it's the in-memory table metadata.

Already implemented. Tracked in #723.

@waynexia The ignoring looks like not working at all.

遵循的是 Double.compare 和 Float.compare 的规则，确实跟其他语言不一样 https://docs.oracle.com/javase/8/docs/api/java/lang/Double.html#compareTo-java.lang.Double- 我想想怎么修复。