KevinGG opened a new pull request #12442: URL: https://github.com/apache/beam/pull/12442
The datatable now displays some info when there is no data and renders
datatable when data comes in for continuously updated visualization.
The problem was:
If the pcoll returns empty data for a streaming pipeline, it will cause
the header of the datatable to container only the index column. Later
when updating, if data is not empty, new rows are added but there are no
columns to display those data.
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