This PR includes the following adjustments:
1. To prevent channelCP update task backlog, only one task with the same
vchannel is retained in the updater. Additionally, the lastUpdateTime is
refreshed after the flowgraph submits the update task, rather than in
the callBack function.
2. Batch updates of multiple vchannel checkpoints are performed in the
UpdateChannelCheckpoint RPC (default batch size is 128). Additionally,
the lock for channelCPs in DataCoord meta has been switched from key
lock to global lock.
3. The concurrency of UpdateChannelCheckpoint RPCs in the datanode has
been reduced from 1000 to 10.
issue: https://github.com/milvus-io/milvus/issues/30004
---------
Signed-off-by: bigsheeper <yihao.dai@zilliz.com>
Co-authored-by: jaime <yun.zhang@zilliz.com>
Co-authored-by: congqixia <congqi.xia@zilliz.com>
