clintropolis commented on a change in pull request #10088:
URL: https://github.com/apache/druid/pull/10088#discussion_r446727236
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File path:
extensions-core/datasketches/src/main/java/org/apache/druid/query/aggregation/datasketches/quantiles/DoublesSketchComplexMetricSerde.java
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@@ -77,7 +78,7 @@ public Object extractValue(final InputRow inputRow, final
String metricName)
// This corresponds to "A" in base64, so it is not a digit
if (objectString.isEmpty()) {
return DoublesSketchOperations.EMPTY_SKETCH;
- } else if (Character.isDigit(objectString.charAt(0))) {
+ } else if (NumberUtils.isParsable(objectString)) {
Review comment:
Since this method is going to look at every character of the string to
check if it's a number, I wonder if it's better to just try to parse it to a
double and then use it if it's not null, maybe
```java
...
final Double doubleValue;
if (objectString.isEmpty()) {
return DoublesSketchOperations.EMPTY_SKETCH;
} else if ((doubleValue = Doubles.tryParse(objectString)) != null)
{
UpdateDoublesSketch sketch =
DoublesSketch.builder().setK(MIN_K).build();
sketch.update(doubleValue);
return sketch;
}
...
```
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