Lei, HUANG

@kysshsy Since we've marked this issue as GFI, I think we can resort to a simple solution. We don't need to support complex time ranges expressed by `where` clause, but...

A similar issue: https://github.com/GreptimeTeam/greptimedb/issues/3085 Currently we use [periodical fsync](https://github.com/GreptimeTeam/greptimedb/pull/3114) to alleviate the problem. Before the periodical fsync the disk ioutil looks like:

> THx for your advices. This problems might not be similar to yours. And we've met this problem on Cloud Env when rewriting and fixed it in #347, by introducing...

> I think it's caused by file recycling (`SinglePipe::recycled_files`), some of obsolete log files will be kept around for future writes to reuse. After #310, those files no longer use...

> It's a good idea. I already have a PR that merge the file location field of multiple entries into one u32 (#208). We just need to move the entry...