See also #29625
This PR:
- Add a new implemention of `DeleteBuffer`: listDeleteBuffer
- holds cacheBlock slice
- `Put` method append new delete data into last block
- when a block is full, append a new block into the list
- Add `TryDiscard` method for `DeleteBuffer` interface
- For doubleCacheBuffer, do nothing
- For listDeleteBuffer, try to evict "old" blocks, which are blocks
before the first block whose start ts is behind provided ts
- Add checkpoint field for `UpdateVersion` sync action, which shall be
used to discard old cache delete block
---------
Signed-off-by: Congqi Xia <congqi.xia@zilliz.com>
See also #29332
The segment may be released before or during the request when delegator
tries to forward delete request to yet. Currently, these two situation
returns different error code.
In this particular case, `ErrSegmentNotLoaded` and `ErrSegmentNotFound`
shall both be ignored preventing return search service unavailable by
mistake.
---------
Signed-off-by: Congqi Xia <congqi.xia@zilliz.com>
Fix#28386
Current code snippet
```
// get delegator
sd, ok := node.delegators.Get(channel)
if !ok {
err := merr.WrapErrChannelNotFound(channel)
log.Warn("Query failed, failed to get shard delegator for search", zap.Error(err))
return nil, err
}
req, err = node.optimizeSearchParams(ctx, req, sd)
if err != nil {
log.Warn("failed to optimize search params", zap.Error(err))
return nil, err
}
// do search
results, err := sd.Search(searchCtx, req)
```
We could move these into `ShardDelegator`, and directly use sealed
segment num in `Search` methods, also segment num got outside could be
wrong when we specify partitions.
Signed-off-by: chasingegg <chao.gao@zilliz.com>
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