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pingcap · May 29, 2023 · 33af013 · 33af013
1 parent 8a4b0bf
commit 33af013
Showing 1 changed file with 2 additions and 0 deletions.
diff --git a/tikv-client/src/main/java/com/pingcap/tikv/operation/iterator/DAGIterator.java b/tikv-client/src/main/java/com/pingcap/tikv/operation/iterator/DAGIterator.java
@@ -239,6 +239,8 @@ private SelectResponse process(RegionTask regionTask) {
                 RangeSplitter.newSplitter(clientSession.getTiKVSession().getRegionManager())
                     .splitRangeByRegion(ranges, storeType));
           } catch (Exception e) {
+            // If the pd is switching leader, the region invalid exception will be thrown. In this
+            // case, we can retry with the original task.
             logger.warn("split range by region error, retry with the original task", e);
             remainTasks.add(task);
           }