This commit adds sparse float vector support to segcore with the
following:
1. data type enum declarations
2. Adds corresponding data structures for handling sparse float vectors
in various scenarios, including:
* FieldData as a bridge between the binlog and the in memory data
structures
* mmap::Column as the in memory representation of a sparse float vector
column of a sealed segment;
* ConcurrentVector as the in memory representation of a sparse float
vector of a growing segment which supports inserts.
3. Adds logic in payload reader/writer to serialize/deserialize from/to
binlog
4. Adds the ability to allow the index node to build sparse float vector
index
5. Adds the ability to allow the query node to build growing index for
growing segment and temp index for sealed segment without index built
This commit also includes some code cleanness, comment improvement, and
some unit tests for sparse vector.
https://github.com/milvus-io/milvus/issues/29419
Signed-off-by: Buqian Zheng <zhengbuqian@gmail.com>
/kind improvement
this removes the 1x copying while loading variable length data, also
avoids constructing std::string, which could lead to memory
fragmentation
---------
Signed-off-by: yah01 <yah2er0ne@outlook.com>
Signed-off-by: longjiquan <jiquan.long@zilliz.com>
Co-authored-by: yah01 <yah2er0ne@outlook.com>
for now the assert method in segcore could accept a string information,
too many codes don't print the value they assert.
make it happy
related #28811
---------
Signed-off-by: yah01 <yah2er0ne@outlook.com>
before this, Milvus use container/system's memory info to get the memory
usage, which could be inaccurate.
we allocates the memory by private anon mmap,
then `rss - shared` would be the accurate memory usage
resolve#28553
---------
Signed-off-by: yah01 <yah2er0ne@outlook.com>
This will significantly reduce the memory usage while loading
- 1x memory usage and MBs overhead for buffer (memory mode)
- only MBs overhead for buffer (mmap mode)
Signed-off-by: yah01 <yang.cen@zilliz.com>
