TAJO-1000: Improve Repartitioner for join queries
Merge pull request #83 from hyunsik/TAJO-1000

TAJO-1000: Improve Repartitioner for join queries
#84 - DDL statements cause NPE
Add license files.
Merge pull request #84 from hyunsik/issue_84

DDL statements cause NPE
Merge pull request #85 from hyunsik/add_license

Add license files.
TAJO-1002: Implement a way to determine the number of non-leaf tasks

https://dbserver.korea.ac.kr/jira/browse/TAJO-1002
Merge pull request #87 from hyunsik/TAJO-1002

TAJO-1002: Implement a way to determine the number of non-leaf tasks
TAJO-1003: Resource leak bug in RMContainerAllocator

https://dbserver.korea.ac.kr/jira/browse/TAJO-1003
Merge pull request #88 from hyunsik/TAJO-1003

TAJO-1003: Resource leak bug in RMContainerAllocator
TAJO-1005: SubQuery requests more containers than available containers in cluster

https://dbserver.korea.ac.kr/jira/browse/TAJO-1005
Merge pull request #89 from hyunsik/TAJO-1005_PC

TAJO-1005: SubQuery requests more containers than available containers i...
Fixed NPE bugs of Repartitioner.
Merge pull request #90 from hyunsik/Q6_WORKAROUND

Fixed NPE bugs of Repartitioner
Adjusted the default parameters for experiments
Merge pull request #91 from hyunsik/ADJUST_PARAM

Adjusted the default parameters for experiments
TAJO-1006: Measuring the query execution time

https://dbserver.korea.ac.kr/jira/browse/TAJO-1006
Merge pull request #92 from hyunsik/TAJO-1006

TAJO-1006: Measuring the query execution time
TAJO-1007: Resource starvation during the integrating unit test

https://dbserver.korea.ac.kr/jira/browse/TAJO-1007
Merge pull request #93 from hyunsik/TAJO-1007

TAJO-1007: Resource starvation during the integrating unit test