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[RTO/RPO] Fix: NullPointer in ClusterTopology #15347

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Merged
OneSizeFitsQuorum merged 1 commit into from
Apr 16, 2025
Merged

[RTO/RPO] Fix: NullPointer in ClusterTopology #15347

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4 changes: 4 additions & 0 deletions iotdb-core/datanode/src/main/java/org/apache/iotdb/db/queryengine/plan/ClusterTopology.java
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Original file line number Diff line number Diff line change
Expand Up @@ -89,6 +89,10 @@ private List<TRegionReplicaSet> getReachableCandidates(List<TRegionReplicaSet> a
if (!isPartitioned.get() || all == null || all.isEmpty()) {
return all;
}
if (all.stream().anyMatch(set -> set.getDataNodeLocationsSize() == 0)) {
// some TRegionReplicaSet is unreachable since all DataNodes are down
return Collections.emptyList();
}
final Map<Integer, Set<Integer>> topologyMapCurrent =
Collections.unmodifiableMap(this.topologyMap.get());

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