Improves performance of inprocess testing (#442).

This commit works only hadoop1.
Merge remote-tracking branch 'private/issue/442-M0' into 0.7-develop
Merge tag '0.7.1-M1' into 0.7-hadoop1-develop

Released version 0.7.1-M1
Changed version to 0.7-hadoop1-SNAPSHOT
Refactor #442.
Merge remote-tracking branch 'private/issue/442-M2' into 0.7-develop
Merge tag '0.7.1-M3' into 0.7-hadoop1-develop

Released version 0.7.1-M3