klsince commented on code in PR #11978:
URL: https://github.com/apache/pinot/pull/11978#discussion_r1406600662
##########
pinot-core/src/main/java/org/apache/pinot/core/routing/RoutingTable.java:
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@@ -18,27 +18,39 @@
*/
package org.apache.pinot.core.routing;
+import java.util.HashMap;
import java.util.List;
import java.util.Map;
+import org.apache.commons.lang3.tuple.Pair;
import org.apache.pinot.core.transport.ServerInstance;
public class RoutingTable {
- private final Map<ServerInstance, List<String>> _serverInstanceToSegmentsMap;
+ // Optional segments are those not online as in ExternalView but might have
been online on servers already, e.g.
+ // the newly created consuming segments. Such segments were simply skipped
by brokers at query routing time, but that
+ // had caused wrong query results, particularly for upsert tables. Instead,
we should pass such segments to servers
+ // and let them decide how to handle them, e.g. skip them upon issues or
include them for better query results.
+ private final Map<ServerInstance, Pair<List<String>, List<String>/*optional
segments*/>> _serverInstanceToSegmentsMap;
private final List<String> _unavailableSegments;
private final int _numPrunedSegments;
- public RoutingTable(Map<ServerInstance, List<String>>
serverInstanceToSegmentsMap, List<String> unavailableSegments,
- int numPrunedSegments) {
+ public RoutingTable(Map<ServerInstance, Pair<List<String>, List<String>>>
serverInstanceToSegmentsMap,
Review Comment:
server side logic handles null, and I'll document that the contract is to
use null for empty optional segment list
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