suneet-s commented on a change in pull request #11227:
URL: https://github.com/apache/druid/pull/11227#discussion_r629569200
##########
File path:
server/src/main/java/org/apache/druid/metadata/IndexerSQLMetadataStorageCoordinator.java
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@@ -1423,4 +1424,40 @@ public boolean insertDataSourceMetadata(String
dataSource, DataSourceMetadata me
.execute()
);
}
+
+ @Override
+ public int removeDataSourceMetadataOlderThan(long timestamp, @Nullable
Set<String> excludeDatasources)
+ {
+ DateTime dateTime = DateTimes.utc(timestamp);
+ List<String> datasources = connector.getDBI().withHandle(
+ handle -> handle
+ .createQuery(
+ StringUtils.format(
+ "SELECT dataSource FROM %1$s WHERE created_date < '%2$s'",
+ dbTables.getDataSourceTable(),
+ dateTime.toString()
+ )
+ )
+ .mapTo(String.class)
+ .list()
+ );
+ return connector.getDBI().withHandle(
+ handle -> {
+ final PreparedBatch batch = handle.prepareBatch(
+ StringUtils.format(
+ "DELETE FROM %1$s WHERE dataSource = :dataSource AND
created_date < '%2$s'",
Review comment:
Why did you choose to build the delete statements one at a time instead
of doing a batch delete?
I think we could encapsulate the `excludeDatasources` logic in a where
clause of this delete statement instead.
Something like `DELETE FROM datasources where created_date < "date" and
datasource not in ("excludeDataSources")`
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