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Modifying index from druid_segments(datasource, used, end) to druid_segments(datasource, used, end, start) to support kill task (#11894) 

This index helps in faster query results during kill task's query on interval based unused segment listing. This can become a bottleneck in some production loads causing coordinator to wait longer for metadata db replies and impacting  Kafka ingestion. The modified index has helped reduce the query times for such queries.
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lokesh-lingarajan 2021-12-16 10:28:20 -08:00 committed by GitHub
parent 0cc998d8a1
commit 60a3a802b6
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server/src/main/java/org/apache/druid/metadata/SQLMetadataConnector.java
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@ -280,7 +280,7 @@ public abstract class SQLMetadataConnector implements MetadataStorageConnector
),
StringUtils.format("CREATE INDEX idx_%1$s_used ON %1$s(used)", tableName),
StringUtils.format(
"CREATE INDEX idx_%1$s_datasource_used_end ON %1$s(dataSource, used, %2$send%2$s)",
"CREATE INDEX idx_%1$s_datasource_used_end_start ON %1$s(dataSource, used, %2$send%2$s, start)",
tableName,
getQuoteString()
)