These row keys don't look right to me.  We might be missing something in parsing the task attempts for 2.0.  The row key for a task attempt should only differ from the related task row by an additional "_[0-9]+".

So, for example, for the two keys:

+          "cluster1!user!Sleep!1!job_1329348432655_0001!m_000009",
+          "cluster1!user!Sleep!1!job_1329348432655_0001!attempt_1329348432655_0001_m_000009_0",

I would instead expect to see:

+          "cluster1!user!Sleep!1!job_1329348432655_0001!m_000009",
+          "cluster1!user!Sleep!1!job_1329348432655_0001!m_000009_0",