Incorrect path in metadata of a local Iceberg table

[zvonand]

Repro

Follow the steps in the readme: https://github.com/Altinity/ice/blob/master/examples/localfileio/README.md

Problem

ice writes an incorrect path to manifest-list to metadata.json. Here is what is inside it:

.....
  "snapshots" : [ {
.......
    "manifest-list" : "file://warehouse/flowers/iris/metadata/snap-9165133074007388014-1-33c60bf9-ba48-4ac1-9742-cb6d08b57412.avro",
.....

However, this path is malformed. If prefixed by scheme description (file://), it must be an absolute path (file:///...). Same incorrectness can be found in manifest list and manifest file.

Now upstream ClickHouse reads such tables properly, but this is the case where negative * negative = positive (CH also parses path incorrectly).

Solution proposed

Absolute path shall be written there (file:///absolute/path/to/location).

[zvonand]

cc @alsugiliazova