[Cherry-Pick] Minor fix on segment metric

[soothing-rain]

/kind improvement

Signed-off-by: Yuchen Gao yuchen.gao@zilliz.com

[congqixia]

/lgtm

[sre-ci-robot]

[APPROVALNOTIFIER] This PR is APPROVED

This pull-request has been approved by: congqixia, soothing-rain

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[mergify]

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

[codecov]

Codecov Report

Merging #21977 (ca9b307) into 2.2.0 (51f7519) will increase coverage by 0.04%.
The diff coverage is 100.00%.

@@            Coverage Diff             @@
##            2.2.0   #21977      +/-   ##
==========================================
+ Coverage   81.72%   81.77%   +0.04%     
==========================================
  Files         700      700              
  Lines       98041    98041              
==========================================
+ Hits        80124    80171      +47     
+ Misses      14807    14772      -35     
+ Partials     3110     3098      -12     

Impacted Files	Coverage Δ
internal/datacoord/meta.go	87.05% <100.00%> (+0.21%)	⬆️
internal/distributed/indexcoord/client/client.go	53.29% <0.00%> (-3.85%)	⬇️
internal/querynode/query_node.go	76.85% <0.00%> (-0.93%)	⬇️
internal/datacoord/segment_manager.go	87.25% <0.00%> (-0.84%)	⬇️
internal/distributed/datacoord/client/client.go	73.87% <0.00%> (-0.78%)	⬇️
internal/mq/msgstream/mq_msgstream.go	77.79% <0.00%> (-0.57%)	⬇️
internal/querynode/impl.go	66.55% <0.00%> (+0.16%)	⬆️
internal/proxy/util.go	91.52% <0.00%> (+0.43%)	⬆️
internal/querycoordv2/task/scheduler.go	78.93% <0.00%> (+0.59%)	⬆️
internal/datacoord/server.go	78.11% <0.00%> (+0.68%)	⬆️
... and 10 more

[soothing-rain]

/run-cpu-e2e