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https://issues.apache.org/jira/browse/TAJO-1340?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14742436#comment-14742436
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ASF GitHub Bot commented on TAJO-1340:
--------------------------------------
Github user jinossy commented on a diff in the pull request:
https://github.com/apache/tajo/pull/671#discussion_r39346362
--- Diff:
tajo-core-tests/src/test/resources/results/TestTajoCli/testHelpSessionVars.result
---
@@ -42,4 +42,5 @@ Available Session Variables:
\set ARITHABORT [true or false] - If true, a running query will be
terminated when an overflow or divide-by-zero occurs.
\set FETCH_ROWNUM [int value] - Sets the number of rows at a time from
Master
\set BLOCK_ON_RESULT [true or false] - Whether to block result set on
query execution
+\set RESULT_COMPRESS [true or false] - Enable resultSet compression
--- End diff --
Thanks for your detailed review
"useCompression=true" looks great to me. also I’m going to change to
COMPRESSED_RESULT_TRENSFER for session variable
> Change the default output file format.
> --------------------------------------
>
> Key: TAJO-1340
> URL: https://issues.apache.org/jira/browse/TAJO-1340
> Project: Tajo
> Issue Type: Improvement
> Components: Java Client, JDBC Driver, Offheap, Storage
> Reporter: Hyunsik Choi
> Assignee: Jinho Kim
> Fix For: 0.11.0, 0.12.0
>
> Attachments: TAJO-1340.patch, TAJO-1340_2.patch
>
>
> 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.
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