add isDebug judgement

diff --git a/iotdb-core/datanode/src/main/java/org/apache/iotdb/db/queryengine/execution/operator/source/FileLoaderUtils.java b/iotdb-core/datanode/src/main/java/org/apache/iotdb/db/queryengine/execution/operator/source/FileLoaderUtils.java
index c8d8a4d..d825e13 100644
--- a/iotdb-core/datanode/src/main/java/org/apache/iotdb/db/queryengine/execution/operator/source/FileLoaderUtils.java
+++ b/iotdb-core/datanode/src/main/java/org/apache/iotdb/db/queryengine/execution/operator/source/FileLoaderUtils.java

@@ -187,12 +187,14 @@
               new MemAlignedChunkMetadataLoader(resource, alignedPath, context, globalTimeFilter));
           // mem's modification already done in generating chunkmetadata
         }
-        DEBUG_LOGGER.info(
-            "Get timeseries: {}.{}  metadata in file: {}  from memtable: {}.",
-            alignedPath.getDevice(),
-            alignedPath.getMeasurementList(),
-            resource,
-            alignedTimeSeriesMetadata);
+        if (context.isDebug()) {
+          DEBUG_LOGGER.info(
+              "Get timeseries: {}.{}  metadata in file: {}  from memtable: {}.",
+              alignedPath.getDevice(),
+              alignedPath.getMeasurementList(),
+              resource,
+              alignedTimeSeriesMetadata);
+        }
       }
 
       if (alignedTimeSeriesMetadata != null) {

diff --git a/iotdb-core/datanode/src/main/java/org/apache/iotdb/db/queryengine/execution/operator/source/SeriesScanUtil.java b/iotdb-core/datanode/src/main/java/org/apache/iotdb/db/queryengine/execution/operator/source/SeriesScanUtil.java
index c8b8238..4074592 100644
--- a/iotdb-core/datanode/src/main/java/org/apache/iotdb/db/queryengine/execution/operator/source/SeriesScanUtil.java
+++ b/iotdb-core/datanode/src/main/java/org/apache/iotdb/db/queryengine/execution/operator/source/SeriesScanUtil.java

@@ -1212,13 +1212,15 @@
         if (!ascending) {
           tsBlock.reverse();
         }
-        DEBUG_LOGGER.info(
-            "TsBlock from version {} is {}, isSeq: {}, isAligned: {}, isMem: {}",
-            version,
-            tsBlock,
-            isSeq,
-            isAligned,
-            isMem);
+        if (context.isDebug()) {
+          DEBUG_LOGGER.info(
+              "TsBlock from version {} is {}, isSeq: {}, isAligned: {}, isMem: {}",
+              version,
+              tsBlock,
+              isSeq,
+              isAligned,
+              isMem);
+        }
         return tsBlock;
       } finally {
         long time = System.nanoTime() - startTime;