Check whether segments are fully loaded while fetching shard leaders

[yah01]

Signed-off-by: yah01 yang.cen@zilliz.com
/kind bug
related #20841

[mergify]

@yah01 ut workflow job failed, comment rerun ut can trigger the job again.

[mergify]

@yah01 E2e jenkins job failed, comment /run-cpu-e2e can trigger the job again.

[mergify]

@yah01 ut workflow job failed, comment rerun ut can trigger the job again.

[codecov]

Codecov Report

Merging #20991 (3cbac4c) into master (243d8cf) will increase coverage by 0.03%.
The diff coverage is 94.73%.

@@            Coverage Diff             @@
##           master   #20991      +/-   ##
==========================================
+ Coverage   81.75%   81.79%   +0.03%     
==========================================
  Files         693      697       +4     
  Lines       93318    93686     +368     
==========================================
+ Hits        76293    76629     +336     
- Misses      14005    14027      +22     
- Partials     3020     3030      +10     

Impacted Files	Coverage Δ
internal/querycoordv2/services.go	82.44% <94.73%> (+2.71%)	⬆️
internal/querycoordv2/job/scheduler.go	88.42% <0.00%> (-6.32%)	⬇️
internal/rootcoord/scheduler.go	96.29% <0.00%> (-3.71%)	⬇️
internal/querycoordv2/dist/dist_handler.go	74.57% <0.00%> (-3.39%)	⬇️
internal/mq/mqimpl/rocksmq/client/client_impl.go	77.96% <0.00%> (-2.55%)	⬇️
internal/config/manager.go	76.02% <0.00%> (-1.54%)	⬇️
internal/distributed/querycoord/client/client.go	79.02% <0.00%> (-1.40%)	⬇️
internal/indexcoord/flush_segment_watcher.go	95.88% <0.00%> (-1.24%)	⬇️
internal/distributed/datacoord/client/client.go	75.34% <0.00%> (-0.80%)	⬇️
internal/querycoordv2/checkers/segment_checker.go	84.89% <0.00%> (-0.53%)	⬇️
... and 26 more

[congqixia]

/lgtm

[sre-ci-robot]

[APPROVALNOTIFIER] This PR is APPROVED

This pull-request has been approved by: congqixia, yah01

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