Github user lw-lin commented on a diff in the pull request: https://github.com/apache/spark/pull/16673#discussion_r97225131 --- Diff: streaming/src/main/resources/org/apache/spark/streaming/ui/static/streaming-page.js --- @@ -169,7 +169,7 @@ function drawTimeline(id, data, minX, maxX, minY, maxY, unitY, batchInterval) { .style("cursor", "pointer") .attr("cx", function(d) { return x(d.x); }) .attr("cy", function(d) { return y(d.y); }) - .attr("r", function(d) { return isFailedBatch(d.x) ? "2" : "0";}) + .attr("r", function(d) { return isFailedBatch(d.x) ? "2" : "3";}) --- End diff -- This changes the radius of a blue circle (which represents a successful batch) in the svg. Prior to this patch, the radius was 0 thus the blue circle could not be hovered and tooltip would not show. This patch alters the radius to 3 for each blue circle.
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