richardstartin commented on a change in pull request #7776:
URL: https://github.com/apache/pinot/pull/7776#discussion_r750305717
##########
File path:
pinot-segment-spi/src/main/java/org/apache/pinot/segment/spi/creator/name/SimpleSegmentNameGenerator.java
##########
@@ -50,6 +50,12 @@ public SimpleSegmentNameGenerator(String segmentNamePrefix,
@Nullable String seg
@Override
public String generateSegmentName(int sequenceId, @Nullable Object
minTimeValue, @Nullable Object maxTimeValue) {
+ if (minTimeValue != null) {
+ minTimeValue = minTimeValue.toString().replaceAll("[: \\/]", "_");
Review comment:
It's better to precompile these i.e.
```java
private static final Pattern REPLACEMENT_REGEX = Pattern.compile("[: \\/]");
...
minTimeValue = minTimeValue.toString().replaceAll(REPLACEMENT_REGEX, "_");
```
This isn't a very hot code path but always doing this will make it easier to
ban on the fly regex compilation with static analysis.
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