adarshsanjeev commented on code in PR #13205:
URL: https://github.com/apache/druid/pull/13205#discussion_r1024033929
##########
integration-tests-ex/cases/src/test/java/org/apache/druid/testsEx/msq/ITMultiStageQuery.java:
##########
@@ -122,4 +126,144 @@ public void testMsqIngestionAndQuerying() throws Exception
msqHelper.testQueriesFromFile(QUERY_FILE, datasource);
}
+
+ @Test
+ public void testMsqIngestionParallelMerging() throws Exception
+ {
+ String datasource = "dst";
+
+ // Clear up the datasource from the previous runs
+ coordinatorClient.unloadSegmentsForDataSource(datasource);
+
+ String queryLocal =
+ StringUtils.format(
+ "INSERT INTO %s\n"
+ + "SELECT\n"
+ + " TIME_PARSE(\"timestamp\") AS __time,\n"
+ + " isRobot,\n"
+ + " diffUrl,\n"
+ + " added,\n"
+ + " countryIsoCode,\n"
+ + " regionName,\n"
+ + " channel,\n"
+ + " flags,\n"
+ + " delta,\n"
+ + " isUnpatrolled,\n"
+ + " isNew,\n"
+ + " deltaBucket,\n"
+ + " isMinor,\n"
+ + " isAnonymous,\n"
+ + " deleted,\n"
+ + " cityName,\n"
+ + " metroCode,\n"
+ + " namespace,\n"
+ + " comment,\n"
+ + " page,\n"
+ + " commentLength,\n"
+ + " countryName,\n"
+ + " user,\n"
+ + " regionIsoCode\n"
+ + "FROM TABLE(\n"
+ + " EXTERN(\n"
+ + "
'{\"type\":\"local\",\"files\":[\"/resources/data/batch_index/json/wikipedia_index_data1.json\"]}',\n"
+ + " '{\"type\":\"json\"}',\n"
+ + "
'[{\"type\":\"string\",\"name\":\"timestamp\"},{\"type\":\"string\",\"name\":\"isRobot\"},{\"type\":\"string\",\"name\":\"diffUrl\"},{\"type\":\"long\",\"name\":\"added\"},{\"type\":\"string\",\"name\":\"countryIsoCode\"},{\"type\":\"string\",\"name\":\"regionName\"},{\"type\":\"string\",\"name\":\"channel\"},{\"type\":\"string\",\"name\":\"flags\"},{\"type\":\"long\",\"name\":\"delta\"},{\"type\":\"string\",\"name\":\"isUnpatrolled\"},{\"type\":\"string\",\"name\":\"isNew\"},{\"type\":\"double\",\"name\":\"deltaBucket\"},{\"type\":\"string\",\"name\":\"isMinor\"},{\"type\":\"string\",\"name\":\"isAnonymous\"},{\"type\":\"long\",\"name\":\"deleted\"},{\"type\":\"string\",\"name\":\"cityName\"},{\"type\":\"long\",\"name\":\"metroCode\"},{\"type\":\"string\",\"name\":\"namespace\"},{\"type\":\"string\",\"name\":\"comment\"},{\"type\":\"string\",\"name\":\"page\"},{\"type\":\"long\",\"name\":\"commentLength\"},{\"type\":\"string\",\"name\":\"countryName\"},{\"type\":
\"string\",\"name\":\"user\"},{\"type\":\"string\",\"name\":\"regionIsoCode\"}]'\n"
+ + " )\n"
+ + ")\n"
+ + "PARTITIONED BY DAY\n"
+ + "CLUSTERED BY \"__time\"",
+ datasource
+ );
+
+ ImmutableMap<String, Object> context = ImmutableMap.of(
+ MultiStageQueryContext.CTX_CLUSTER_STATISTICS_MERGE_MODE,
+ ClusterStatisticsMergeMode.PARALLEL
Review Comment:
An IT test for AUTO mode would test either PARALLEL or SEQUENTIAL, which are
already tested. Would a unit test that checks the thresholds for AUTO be better?
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