Rollback is implemented and all existing tests pass.(The existing failure test cases work, but more test cases need to be added).

git-svn-id: https://asterixdb.googlecode.com/svn/branches/asterix_lsm_stabilization@979 eaa15691-b419-025a-1212-ee371bd00084
diff --git a/asterix-app/src/test/resources/runtimets/queries/failure/delete-rtree.aql b/asterix-app/src/test/resources/runtimets/queries/failure/delete-rtree.aql
index 465d94f..6fc11e5 100644
--- a/asterix-app/src/test/resources/runtimets/queries/failure/delete-rtree.aql
+++ b/asterix-app/src/test/resources/runtimets/queries/failure/delete-rtree.aql
@@ -18,7 +18,7 @@
 using "edu.uci.ics.asterix.external.dataset.adapter.NCFileSystemAdapter"
 (("path"="nc1://data/twitter/smalltweets.txt"),("format"="adm")) pre-sorted;
 
-delete $l from dataset MyData where $l.id>=50 die after 1500;
+delete $l from dataset MyData where $l.id>=50 die after 1000;
 
 write output to nc1:"rttest/failure_delete-rtree.adm";