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[TAJO-1664] Implement ODBC driver - Tajo - [issue]
...Many BI and visualization tools require ODBC driver. We need to support it....
http://issues.apache.org/jira/browse/TAJO-1664    Author: Hyunsik Choi , 2017-12-02, 17:33
[TAJO-2084] Add global plan verifier - Tajo - [issue]
...We have two plan verifiers (PreLogicalPlanVerifier and PostLogicalPlanVerifier) to test logical plan, but nothing for global plan. Global plan verifier will be helpful to find potential bugs...
http://issues.apache.org/jira/browse/TAJO-2084    Author: Jihoon Son , 2017-12-02, 17:33
[TAJO-2096] Apply offheap to the join operator - Tajo - [issue]
...Join operator is kept target table in the heap memory. but it causes too many GC. If memory type is choosable, it would be better...
http://issues.apache.org/jira/browse/TAJO-2096    Author: Jinho Kim , 2017-12-02, 17:33
[TAJO-1910] Code migration for Java 8 - Tajo - [issue]
...See the title. This is an umbrella issue to track the migration issues for Java 8....
http://issues.apache.org/jira/browse/TAJO-1910    Author: Hyunsik Choi , 2017-12-02, 17:33
[TAJO-1364] Nested record support in Parquet Scanner and Appender. - Tajo - [issue]
...Currently, Parquet Scanner and Appender do not support nested message type. We need to implement them....
http://issues.apache.org/jira/browse/TAJO-1364    Author: Hyunsik Choi , 2017-12-02, 17:33
[TAJO-1456] Add a filter pushdown optimization phase after join ordering - Tajo - [issue]
...Currently, filter pushdown optimization is conducted only before join order optimization.However, the join order can be changed after its optimization, and thus the best position for each pr...
http://issues.apache.org/jira/browse/TAJO-1456    Author: Jihoon Son , 2017-12-02, 17:33
[TAJO-1879] Add enabled and description fields to tablespace entry in storage-site.json - Tajo - [issue]
...It would great if tablespace entry has two fields: enabled: it can enables or disable the tablespace. description: the description of tablespace...
http://issues.apache.org/jira/browse/TAJO-1879    Author: Hyunsik Choi , 2017-12-02, 17:33
[TAJO-1666] Allow multiple columns for IN predicates - Tajo - [issue]
...A single column is currently allowed for IN predicates. We should improve it....
http://issues.apache.org/jira/browse/TAJO-1666    Author: Jihoon Son , 2017-12-02, 17:33
[TAJO-1120] Enable collecting column stats when storing a table if necessary - Tajo - [issue]
...Currently, the number of null values and the max/min values of a column are collected only in the shuffle stage.In addition, the number of distinct values of a column seems not to be collect...
http://issues.apache.org/jira/browse/TAJO-1120    Author: Jihoon Son , 2017-12-02, 17:33
[TAJO-1968] Change 'threshold' in the name of configuration and session variables to 'limit' - Tajo - [issue]
...See the discussion at https://github.com/apache/tajo/pull/848#discussion_r44101976.We need to make the configuration names consistent....
http://issues.apache.org/jira/browse/TAJO-1968    Author: Jihoon Son , 2017-12-02, 17:33