Github user hyunsik commented on a diff in the pull request:
https://github.com/apache/tajo/pull/356#discussion_r23396104
--- Diff: tajo-core/src/main/java/org/apache/tajo/master/QueryManager.java
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@@ -121,19 +126,27 @@ public EventHandler getEventHandler() {
public synchronized Collection<QueryInfo> getFinishedQueries() {
--- End diff --
In some cases, it may result in lots of histories. In that case, It will
cause long latency. Later, we need to improve the paging feature in new jira.
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