Github user jihoonson commented on a diff in the pull request:
https://github.com/apache/tajo/pull/965#discussion_r55160199
--- Diff: tajo-core/src/main/java/org/apache/tajo/querymaster/Query.java ---
@@ -653,12 +679,19 @@ public void execute(QueryMaster.QueryMasterContext
context, QueryContext queryCo
TableDesc resultTableDesc =
new TableDesc(
query.getId().toString(),
- lastStage.getOutSchema(),
+ lastStage.getOutSchema(),
meta,
finalOutputDir.toUri());
resultTableDesc.setExternal(true);
- stats.setNumBytes(getTableVolume(query.systemConf,
finalOutputDir));
+ if (query.hasUnionPlan()) {
+ TableStats aggregated =
query.aggregateTableStatsOfTerminalBlock();
+ stats.setNumRows(aggregated.getNumRows());
+ stats.setNumBytes(aggregated.getNumBytes());
--- End diff --
Copying numRows and numBytes is insufficient. ```aggretated``` should be
set as the stats of ```resultTableDesc```.
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