issue: https://github.com/milvus-io/milvus/issues/44399
This PR implements STL_SORT for VARCHAR data type for both RAM and MMAP
mode.
The general idea is that we deduplicate field values and maintains a
posting list for each unique value.
The serialization format of the index is:
```
[unique_count][string_offsets][string_data][post_list_offsets][post_list_data][magic_code]
string_offsets: array of offsets into string_data section
string_data: str_len1, str1, str_len2, str2, ...
post_list_offsets: array of offsets into post_list_data section
post_list_data: post_list_len1, row_id1, row_id2, ..., post_list_len2, row_id1, row_id2, ...
```
---------
Signed-off-by: SpadeA <tangchenjie1210@gmail.com>
issue: #42942
This pr includes the following changes:
1. Added checks for index checker in querycoord to generate drop index
tasks
2. Added drop index interface to querynode
3. To avoid search failure after dropping the index, the querynode
allows the use of lazy mode (warmup=disable) to load raw data even when
indexes contain raw data.
4. In segcore, loading the index no longer deletes raw data; instead, it
evicts it.
5. In expr, the index is pinned to prevent concurrent errors.
---------
Signed-off-by: sunby <sunbingyi1992@gmail.com>
issue: https://github.com/milvus-io/milvus/issues/38877
1. refactor pymilvus client v2 testcasebase
2. add a test for search hint
3. update pymilvus to 2.6
---------
Signed-off-by: yanliang567 <yanliang.qiao@zilliz.com>
related issue: https://github.com/milvus-io/milvus/issues/32653
1. align some default index params
2. add a new range search tests for all indexes and float vectors
---------
Signed-off-by: yanliang567 <yanliang.qiao@zilliz.com>
