[TAJO-1340] Change the default output file format.

• Type: Improvement
• Status: Resolved
• Priority: Major
• Resolution: Fixed
• Fix Version/s: 0.11.0, 0.12.0
• Component/s: Java Client, JDBC Driver, Offheap, Storage
• Assignee: Jinho Kim
• Reporter: Hyunsik Choi
• Created: 06/Feb/15 08:02
• Updated: 14/Sep/15 08:03
• Resolved: 14/Sep/15 07:35

Description

Currently, the default output file is CSV. Due to its nature, CSV has mainly three problems:

• Its line or field delimiter can be duplicated to some character included in the result data.
• Plan text file is likely to be larger than other file formats.
• Its read and write performance is slow.

We need to change the default output file format into other file formats. We also need to investigate which file format is the best for it.

Issue Links

• contains: TAJO-1432 Support compressed result stream
• is blocked by: TAJO-1742 Remove hadoop dependency in DatumFactory
• is blocked by: TAJO-1738 Improve off-heap RowBlock
• relates to: TAJO-1339 Incorrect handling of tables with custom delimiter when their data contain '|'
• requires: TAJO-1743 Improve calculation of intermediate table statistics