suneet-s commented on a change in pull request #11227:
URL: https://github.com/apache/druid/pull/11227#discussion_r629564966
##########
File path:
server/src/main/java/org/apache/druid/metadata/IndexerSQLMetadataStorageCoordinator.java
##########
@@ -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'",
+ dbTables.getDataSourceTable(),
+ dateTime.toString()
+ )
+ );
+ for (String datasourceMetadataInDb : datasources) {
+ if (!excludeDatasources.contains(datasourceMetadataInDb)) {
Review comment:
possible NPE - `excludeDatasources` is marked as nullable in the
function definition
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