Chen Chuanle
Chen Chuanle
ch7中的本质矩阵中(P146), 这个公式是不是错了啊。  原公式是  ， 所以我感觉书本上的写反了，x1应该写在右边，x2写左边，你们怎么看啊？
### Search before asking - [X] I had searched in the [issues](https://github.com/apache/doris/issues?q=is%3Aissue) and found no similar issues. ### Description To be done... ### Use case _No response_ ### Related issues...
# Proposed changes Issue Number: close #17308 ## Problem summary Describe your changes. ## Checklist(Required) * [ ] Does it affect the original behavior * [ ] Has unit tests...
The probe side sits on the lhs, and the build side sits on the rhs. Therefore, the range of the build side should be calculated based on the rhs. Also,...
This is a minor optimization for InsertionSort: we only need to compare the data starting from `col_offset` with a length of `sorting_size`, without comparing the entire data.
Fixes #11936 . Back to the code, we have used two bytes, one to indicate whether it is null, and the other to indicate whether the list is empty, so...
### What happens? ORDER BY with nested list type gives wrong result. ### To Reproduce ```sql CREATE TABLE test(col1 INT, col2 INT2[][][][][][]); INSERT INTO test VALUES(1000000000, null), (1000000001, [[[[[[]]]]]]), (null,...
As described in #13624 , this PR fixes a DB open failure caused by duplicate `VersionEdit` records in the MANIFEST. The issue stems from a bug in FIFO compaction in...
We encountered a backward compatibility issue when upgrading a production RocksDB instance from version 6.x to version 7.10.2. Specifically, RocksDB fails to open a database that previously ran with FIFO...
Hi, I'm reading the braft source code and came across the following implementation of `is_leader()`: ```cpp bool is_leader() { BAIDU_SCOPED_LOCK(_mutex); return _state == STATE_LEADER; } ``` From the code, it...