Related to #27675
Use `struct{}` instead `error` for sync task future result type to
reduce result size and preventing logci error.
Also change some unused parameter to `_` to suppress lint warning
Signed-off-by: Congqi Xia <congqi.xia@zilliz.com>
See also #27675
Since serialization segment buffer does not related to sync manager can
shall be done before submit into sync manager. So that the pk statistic
file could be more accurate and reduce complex logic inside sync
manager.
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Signed-off-by: Congqi Xia <congqi.xia@zilliz.com>
- Change flowgraphManager to fgManagerImpl
- Change close to stop
- change execute to controlMemWaterLevel
- Change method name of fgManager for readability
- Add mockery for fgmanager
Issue: #28853
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Signed-off-by: yangxuan <xuan.yang@zilliz.com>