ISSUE:
Unified Console "Segments" UI is unavailable after 3.4 upgrade.
The error states "Unknown exception / org.apache.calcite.runtime.CalciteContextException: From line 1, column 182 to line 1, column 190: Column 'payload' not found in any table / org.apache.calcite.tools.ValidationException"
ENVIRONMENT:
3.4.7, after upgrading from 3.3.3
ADDITIONAL INFORMATION:
Release notes state the following related to this error and change:
"The payload column has been removed from the sys.segments table, which should make queries on this table much more efficient. The most useful fields, the list of dimensions, metrics, and the shardSpec, have been split out, and still available to devote to processing queries."
CAUSE:
This error is due to having used the older Druid console in the browser. Launching a new browser or clearing the cache will correct this problem.
REFERENCES:
https://docs.imply.io/3.4/on-prem/release
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