chenjunjiedada commented on a change in pull request #887: Define file and
position based deletion file in spec
URL: https://github.com/apache/incubator-iceberg/pull/887#discussion_r402277896
##########
File path: site/docs/spec.md
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@@ -254,6 +255,33 @@ Notes:
1. Technically, data files can be deleted when the last snapshot that contains
the file as “live” data is garbage collected. But this is harder to detect and
requires finding the diff of multiple snapshots. It is easier to track what
files are deleted in a snapshot and delete them when that snapshot expires.
+#### Deletion Files
+
+Deletion files are files that indicate deletions of pre-existing rows to be
applied to the dataset at read time. Deletion files may either specify rows by
column value or by file name and row position.
+
+1. The file and position based deletion file has the schema as following:
+```
+{
+ filename string,
+ position long
+}
Review comment:
You mean json format, right?
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