Did pegasus support distributed transaction?

[kewei-wang]

just like the issue title,did it support distributed transaction so I can use it like the following code?

pegasus.beginTransaction();
pegasus.put("key",value);
v = pegasus.get("key");
v++;
pegasus.put("key",v);
pegasus.commit();

[shengofsun]

@kowayvwang currently we don't support distributed transaction. the only guarantee we can give is that multiple put operations of sortkeys on the same hashkey are atomic.
that is to say, if you write code like this:

pegasus.multi_set("aa", [("bb", "cc"), ("dd", ee), ("ff" -> "gg") ...])

the operations of "aa:bb -> cc" & "aa:dd -> ee" & "aa:ff" -> "gg" will all success or all fail.