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diffix / explorer

Tool to automatically explore and generate stats on data anonymized using Diffix
MIT License
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No metrics returned for some numerical columns #354

Closed sentry-io[bot] closed 3 years ago

sentry-io[bot] commented 3 years ago

This happens when there is little useful data to be extracted - and causes the multicolumn correlation to fail.

In these cases we ought to at least return the list of distinct values (if available).

Sentry Issue: EXPLORER-KQ

System.InvalidOperationException: Expected <descriptive_stats> metric of type Explorer.Components.NumericDistribution for column 'Line No_' but none was found.
  File "/workspaces/diffix-explorer/src/explorer/Queries/MultiColumn/MultiColumnScopeBuilder.cs", line 142, in TryGetMetric
  File "/workspaces/diffix-explorer/src/explorer/Queries/MultiColumn/MultiColumnScopeBuilder.cs", line 66, in <GetProjection>g__NumericProjection|6_0
  File "/workspaces/diffix-explorer/src/explorer/Queries/MultiColumn/MultiColumnScopeBuilder.cs", line 58, in GetProjection
  File "/workspaces/diffix-explorer/src/explorer/Queries/MultiColumn/MultiColumnScopeBuilder.cs", line 30, in Configure { <lambda> }
  File "/workspaces/diffix-explorer/src/explorer/ExplorationScope.cs", line 50, in MoveNext
...
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Error in MultiColumnExploration for NAV_W1_TENANT_WS001/SalesCrMemoLine/Document No_,Line No_.