Github user hyunsik commented on a diff in the pull request:
https://github.com/apache/tajo/pull/671#discussion_r39362251
--- Diff: tajo-common/src/main/java/org/apache/tajo/conf/TajoConf.java ---
@@ -377,6 +381,7 @@ public static int setDateOrder(int dateOrder) {
// ResultSet
---------------------------------------------------------
$RESULT_SET_FETCH_ROWNUM("tajo.resultset.fetch.rownum", 200),
--- End diff --
Yes, you are right. Too big rows will cause OOM. If we find proper default
row number, it will result in better compression ratio.
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