Fix decimal comparison in Qgen
Fix decimal comparison in Qgen

Change-Id: I399dc0906c051b8d42abd99349783f2d60b687c7
Reviewed-on: http://gerrit.cloudera.org:8080/2241
Reviewed-by: Casey Ching <77bc9a9984e6786c5799d7a71768cf023120ef76@cloudera.com>
Tested-by: Internal Jenkins

ibmsoe/ImpalaPPC,ibmsoe/ImpalaPPC,ibmsoe/ImpalaPPC,ibmsoe/ImpalaPPC,ibmsoe/ImpalaPPC,ibmsoe/ImpalaPPC,ibmsoe/ImpalaPPC