* rewrite config module
Signed-off-by: Nwxyu <xy.wang@zilliz.com>

* clang-format
Signed-off-by: Nwxyu <xy.wang@zilliz.com>

* remove empty test
Signed-off-by: Nwxyu <xy.wang@zilliz.com>

* fix include
Signed-off-by: Nwxyu <xy.wang@zilliz.com>

* fix compile
Signed-off-by: Nwxyu <xy.wang@zilliz.com>

* fix clang-format
Signed-off-by: Nwxyu <xy.wang@zilliz.com>

* Add root path for snapshot GC
Signed-off-by: Nyhz <413554850@qq.com>

* Change Fun name from GetResPath to GetRootPath
Signed-off-by: Nyhz <413554850@qq.com>

* Add root path for snapshot GC
Signed-off-by: Nyhz <413554850@qq.com>

* Add subfolder db in root path
Signed-off-by: Nyhz <413554850@qq.com>

* (db/snapshot): update for row count
Signed-off-by: Npeng.xu <peng.xu@zilliz.com>

* (db/snapshot): fix bug in NewSegmentOperation
Signed-off-by: Npeng.xu <peng.xu@zilliz.com>

* (db/snapshot): remove dummy print
Signed-off-by: Npeng.xu <peng.xu@zilliz.com>

* (db/snapshot): Add some test for row count
Signed-off-by: Npeng.xu <peng.xu@zilliz.com>

* (db/snapshot): update size logic
Signed-off-by: Npeng.xu <peng.xu@zilliz.com>

* (db/snapshot): update size logic related ut
Signed-off-by: Npeng.xu <peng.xu@zilliz.com>

* (db/snapshot): rollback if operation is not done
Signed-off-by: Npeng.xu <peng.xu@zilliz.com>

* (db/snapshot): clean store
Signed-off-by: Npeng.xu <peng.xu@zilliz.com>

* (db/snapshot): remove some dependency
Signed-off-by: Npeng.xu <peng.xu@zilliz.com>

* (db/snapshot): update for store
Signed-off-by: Npeng.xu <peng.xu@zilliz.com>

* (db/snapshot): update Store.h
Signed-off-by: Npeng.xu <peng.xu@zilliz.com>

* (db/snapshot): update store related code
Signed-off-by: Npeng.xu <peng.xu@zilliz.com>

* (db/snapshot): add field element modification operation
Signed-off-by: Npeng.xu <peng.xu@zilliz.com>

* (db/snapshot): change new operation name
Signed-off-by: Npeng.xu <peng.xu@zilliz.com>

* (db/snapshot): fix lint error
Signed-off-by: Npeng.xu <peng.xu@zilliz.com>

* (db/snapshot): integrate stage 1
Signed-off-by: Npeng.xu <peng.xu@zilliz.com>

* (db/snapshot): integrate stage 2
Signed-off-by: Npeng.xu <peng.xu@zilliz.com>

* (db/snapshot): integrate stage 3
Signed-off-by: Npeng.xu <peng.xu@zilliz.com>

* (db/snapshot): fix ut
Signed-off-by: Npeng.xu <peng.xu@zilliz.com>

* (db/snapshot): integrate stage 4
Signed-off-by: Npeng.xu <peng.xu@zilliz.com>

* (db/snapshot): integrate stage 5
Signed-off-by: Npeng.xu <peng.xu@zilliz.com>

* (db/snapshot): integrate stage 6
Signed-off-by: Npeng.xu <peng.xu@zilliz.com>

* (db/snapshot): integrate stage 7
Signed-off-by: Npeng.xu <peng.xu@zilliz.com>

* (db/snapshot): add params for some resources
Signed-off-by: Npeng.xu <peng.xu@zilliz.com>

* (db/snapshot): add field type
Signed-off-by: Npeng.xu <peng.xu@zilliz.com>

* (db/snapshot): implement iterate framework for Snapshot
Signed-off-by: Npeng.xu <peng.xu@zilliz.com>

* (db/snapshot): refactor code
Signed-off-by: Npeng.xu <peng.xu@zilliz.com>

* (db/snapshot): fix lint errors
Signed-off-by: Npeng.xu <peng.xu@zilliz.com>

* (db/snapshot): add SnapshotHandlers
Signed-off-by: Npeng.xu <peng.xu@zilliz.com>

* (db/snapshot): add SnapshotVistor
Signed-off-by: Npeng.xu <peng.xu@zilliz.com>

* (db/snapshot): add SizeField for all resource commit
Signed-off-by: Npeng.xu <peng.xu@zilliz.com>

* (db/snapshot): add SegmentsToSearch collector
Signed-off-by: Npeng.xu <peng.xu@zilliz.com>

* (db/snapshot): Iterate handler update
Signed-off-by: Npeng.xu <peng.xu@zilliz.com>

* (db/snapshot): Update IterateHandler
Signed-off-by: Npeng.xu <peng.xu@zilliz.com>

* (db/snapshot): Add some hooks for IterateHandler
Signed-off-by: Npeng.xu <peng.xu@zilliz.com>

* (db/snapshot): Small code refactor
Signed-off-by: Npeng.xu <peng.xu@zilliz.com>

* (db/snapshot): Add const for some snapshot APIs
Signed-off-by: Npeng.xu <peng.xu@zilliz.com>

* (db/snapshot): Add const for some snapshots APIs
Signed-off-by: Npeng.xu <peng.xu@zilliz.com>

* (db/snapshot): Update create collection
Signed-off-by: Npeng.xu <peng.xu@zilliz.com>

* (db/snapshot): merge to new ssdb
Signed-off-by: Npeng.xu <peng.xu@zilliz.com>

* (db/snapshot): fix lint errors
Signed-off-by: Npeng.xu <peng.xu@zilliz.com>

* (db/snapshot): add test_db in ssdb
Signed-off-by: Npeng.xu <peng.xu@zilliz.com>

* (db/snapshot): update test_ssdb
Signed-off-by: Npeng.xu <peng.xu@zilliz.com>

* (db/snapshot): add PartitionTest
Signed-off-by: Npeng.xu <peng.xu@zilliz.com>

* (db/snapshot): add DropIndexOperation
Signed-off-by: Npeng.xu <peng.xu@zilliz.com>

* (db/snapshot): Add IndexTest
Signed-off-by: Npeng.xu <peng.xu@zilliz.com>

* (db/snapshot): Fix some bugs
Signed-off-by: Npeng.xu <peng.xu@zilliz.com>

* (db/snapshot): add RowCount for some resources
Signed-off-by: Npeng.xu <peng.xu@zilliz.com>

* (db/snapshot): code refactor
Signed-off-by: Npeng.xu <peng.xu@zilliz.com>

* (db/snapshot): fix compile error
Signed-off-by: Npeng.xu <peng.xu@zilliz.com>

* rename StatusField to StateField
Signed-off-by: Nyudong.cai <yudong.cai@zilliz.com>

* fix typo
Signed-off-by: Nyudong.cai <yudong.cai@zilliz.com>

* enable GC in OnNoRefCallBack
Signed-off-by: Nyudong.cai <yudong.cai@zilliz.com>

* code opt
Signed-off-by: Nyudong.cai <yudong.cai@zilliz.com>

* Format code style
Signed-off-by: NJinHai-CN <hai.jin@zilliz.com>

* Fix bug && Format code style

* Format code style

* Format code style
Signed-off-by: NJinHai-CN <hai.jin@zilliz.com>

* Update lint
Signed-off-by: NJinHai-CN <hai.jin@zilliz.com>

* Update merge config
Signed-off-by: NJinHai-CN <hai.jin@zilliz.com>

* Fix compiling error
Signed-off-by: NJinHai-CN <hai.jin@zilliz.com>

* opt test_snapshot
Signed-off-by: Nyudong.cai <yudong.cai@zilliz.com>

* rename BaseHolders to ResourceHolder
Signed-off-by: Nyudong.cai <yudong.cai@zilliz.com>

* rename DBBaseResource to BaseResource
Signed-off-by: Nyudong.cai <yudong.cai@zilliz.com>

* remove ResourceHolder.inl
Signed-off-by: Nyudong.cai <yudong.cai@zilliz.com>

* fix clang-format
Signed-off-by: Nyudong.cai <yudong.cai@zilliz.com>