Vladimir Ozerov created IGNITE-1510:
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Summary: Weird format() and remove() semantics.
Key: IGNITE-1510
URL: https://issues.apache.org/jira/browse/IGNITE-1510
Project: Ignite
Issue Type: Task
Components: hadoop
Affects Versions: 1.1.4
Reporter: Vladimir Ozerov
Priority: Critical
Fix For: ignite-1.5
Currently we have two methods to remove something from IGFS:
1) remove - performs soft delete for PRIMARY mode and hard delete for others
2) format - delete of all IGFS data without touching seocndary file system,
which can be either soft or hard depending on some very coutner-intuitive
conditions.
I think we should do the following:
1) remove operation stays as is.
2) format method is deprecated and just falls-back to a new method
"clear(ROOT)".
3) "clear" operation is semantically identical to cache clear: remove in-memory
data, do not touch persistence layer. Essentially it just moves a tree into the
trash just like remove does. But also this operation will offer sync and async
modes. In sync mode operation exits when all data in-memory data is really
removed even from trash.
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