attilapiros commented on code in PR #39728:
URL: https://github.com/apache/spark/pull/39728#discussion_r1087250704
##########
core/src/main/scala/org/apache/spark/util/Utils.scala:
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@@ -1118,7 +1118,7 @@ private[spark] object Utils extends Logging {
// This means some invalid addresses are treated as v6 addresses, but
since they are
// not valid hostnames it doesn't matter.
// See https://www.rfc-editor.org/rfc/rfc1123#page-13 for context around
valid hostnames.
- val addressRe = """^\[{0,1}([0-9:]+?:[0-9]+)\]{0,1}$""".r
+ val addressRe = """^\[{0,1}([0-9:]+?:[0-9]*)\]{0,1}$""".r
Review Comment:
Is there any reason why not use just this tiny regexp:
```
"""^\[{0,1}([0-9:]+)\]{0,1}$"""
```
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