Github user gaborgsomogyi commented on the issue:
https://github.com/apache/spark/pull/22952
@HeartSaVioR
I've taken a deeper look at the overlap thing and found the following.
* Added an additional test which produced odd result:
```
...
val sourcePath = "/hello/worl"
val archivePath = "/hello/world/spark"
...
```
This has thrown `IllegalArgumentException` but the `sourcePath` is
different than `archivePath`.
This happens without any glob magic.
* This approach may not work if there are symlinks involved
(`fs.makeQualified` doesn't make any link resolve).
* HDFS does not support it yet, though on the way, see
https://issues.apache.org/jira/browse/HADOOP-10019
* S3 and ADLS does not support it
All in all this part is fine now.
Checking the glob part...
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