some quick variants around independent exec activity at multiple nodes
Merge branch 'master' of github.com:0xdata/h2o
target each hdfs cluster here
Merge branch 'master' of github.com:0xdata/h2o
Merge branch 'master' of github.com:0xdata/h2o

Conflicts:
	py/testdir_single_jvm_fvec/test_exec2_operators2.py
typo