Add debug log in removing assignment

[XuanYang-cn]

Signed-off-by: yangxuan xuan.yang@zilliz.com
/kind improvement

[codecov]

Codecov Report

Merging #17427 (a18a06e) into master (a9ec1f8) will increase coverage by 0.01%.
The diff coverage is 100.00%.

@@            Coverage Diff             @@
##           master   #17427      +/-   ##
==========================================
+ Coverage   81.07%   81.09%   +0.01%     
==========================================
  Files         466      466              
  Lines       73360    73400      +40     
==========================================
+ Hits        59480    59527      +47     
+ Misses      11259    11249      -10     
- Partials     2621     2624       +3     

Impacted Files	Coverage Δ
internal/datacoord/channel_manager.go	72.07% <100.00%> (+0.20%)	⬆️
internal/indexnode/indexnode_mock.go	84.79% <0.00%> (-3.05%)	⬇️
internal/proxy/channels_time_ticker.go	80.59% <0.00%> (-2.24%)	⬇️
internal/proxy/segment.go	87.87% <0.00%> (-1.52%)	⬇️
internal/proxy/util.go	85.71% <0.00%> (-0.72%)	⬇️
internal/datacoord/services.go	86.35% <0.00%> (-0.15%)	⬇️
internal/datanode/data_node.go	81.10% <0.00%> (+0.06%)	⬆️
internal/rootcoord/root_coord.go	79.47% <0.00%> (+0.31%)	⬆️
internal/rootcoord/task.go	77.57% <0.00%> (+0.38%)	⬆️
internal/rootcoord/meta_table.go	90.00% <0.00%> (+0.65%)	⬆️
... and 5 more

[congqixia]

/lgtm

[sre-ci-robot]

[APPROVALNOTIFIER] This PR is APPROVED

This pull-request has been approved by: congqixia, XuanYang-cn

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• internal/datacoord/OWNERS [congqixia]

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