See also #32860
SyncMgr did not ensure task key is locked before `SyncData` returning
which may cause concurrent problem during sync wich multiple policies.
This PR change sync mgr implementation to make sure the key is locked
before returning task result `*conc.Future`
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Signed-off-by: Congqi Xia <congqi.xia@zilliz.com>
See also #27675#30469
For a sync task, the segment could be compacted during sync task. In
previous implementation, this sync task will hold only the old segment
id as KeyLock, in which case compaction on compacted to segment may run
in parallel with delta sync of this sync task.
This PR introduces sync target segment verification logic. It shall
check target segment lock it's holding beforing actually syncing logic.
If this check failed, sync task shall return`errTargetSegementNotMatch`
error and make manager re-fetch the current target segment id.
Signed-off-by: Congqi Xia <congqi.xia@zilliz.com>
