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Caideyipi pushed a commit to branch fix-fast-last-empty-cache-placeholder-1.3
in repository https://gitbox.apache.org/repos/asf/iotdb.git

commit e758265666116ceb1e3622a8a5a085e858a4cf3d
Author: Caideyipi <[email protected]>
AuthorDate: Fri May 22 11:42:55 2026 +0800

    Fix fast last empty cache handling in 1.3
---
 .../org/apache/iotdb/db/protocol/thrift/impl/ClientRPCServiceImpl.java | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git 
a/iotdb-core/datanode/src/main/java/org/apache/iotdb/db/protocol/thrift/impl/ClientRPCServiceImpl.java
 
b/iotdb-core/datanode/src/main/java/org/apache/iotdb/db/protocol/thrift/impl/ClientRPCServiceImpl.java
index 2ae50d36057..f8bd094b69e 100644
--- 
a/iotdb-core/datanode/src/main/java/org/apache/iotdb/db/protocol/thrift/impl/ClientRPCServiceImpl.java
+++ 
b/iotdb-core/datanode/src/main/java/org/apache/iotdb/db/protocol/thrift/impl/ClientRPCServiceImpl.java
@@ -1008,7 +1008,8 @@ public class ClientRPCServiceImpl implements 
IClientRPCServiceWithHandler {
             if (timeValuePair == null) {
               allCached = false;
               break;
-            } else if (timeValuePair.getValue() == null) {
+            } else if (timeValuePair == DeviceLastCache.EMPTY_TIME_VALUE_PAIR
+                || timeValuePair.getValue() == null) {
               // there is no data for this sensor
               if (!canUseNullEntry) {
                 allCached = false;

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