lokesh-lingarajan commented on a change in pull request #11894:
URL: https://github.com/apache/druid/pull/11894#discussion_r752017835
##########
File path:
server/src/main/java/org/apache/druid/metadata/SQLMetadataConnector.java
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@@ -283,6 +283,11 @@ public void createSegmentTable(final String tableName)
"CREATE INDEX idx_%1$s_datasource_used_end ON %1$s(dataSource,
used, %2$send%2$s)",
tableName,
getQuoteString()
+ ),
+ StringUtils.format(
+ "CREATE INDEX idx_%1$s_datasource_used_start_end ON
%1$s(dataSource, used, start, %2$send%2$s)",
+ tableName,
+ getQuoteString()
Review comment:
@FrankChen021 - since the new index has "end" as the last column, may be
queries that rely only on (datasource, used, end) fields got slow enough to
induce ingestion lag in our environment. Since the symptoms were evident after
deleting the index with (datasource, used, end) columns, I feel we should have
both indexes. wdyt ?
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