electrum commented on code in PR #6772:
URL: https://github.com/apache/iceberg/pull/6772#discussion_r1100535487
##########
core/src/main/java/org/apache/iceberg/util/LocationUtil.java:
##########
@@ -33,4 +34,8 @@ public static String stripTrailingSlash(String path) {
}
return result;
}
+
+ public static String posixNormalize(String path) {
+ return Paths.get(path).normalize().toString();
Review Comment:
This method is not suitable for Iceberg paths, since Java `Path` is for
paths, but Iceberg paths are actually URIs. It mangles URIs and doesn't
understand the scheme vs path distinction:
```
jshell> Paths.get("s3://foo/bar").toString()
$2 ==> "s3:/foo/bar"
jshell> Paths.get("s3://foo/bar/../..").normalize().toString()
$5 ==> "s3:"
jshell> Paths.get("s3://foo/bar/../../..").normalize().toString()
$6 ==> ""
```
`URI.normalize()` seems better, though it has interesting behavior where it
preserves leading `..` path segments at the start of the path that would go
past the root:
```
jshell> URI.create("s3://foo/abc/../../..").normalize()
$11 ==> s3://foo/../..
```
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