liugddx commented on code in PR #4227:
URL: 
https://github.com/apache/incubator-seatunnel/pull/4227#discussion_r1118580546


##########
seatunnel-engine/seatunnel-engine-storage/checkpoint-storage-plugins/checkpoint-storage-hdfs/src/main/java/org/apache/seatunnel/engine/checkpoint/storage/hdfs/HdfsStorage.java:
##########
@@ -242,8 +243,8 @@ public PipelineState getCheckpoint(String jobId, String 
pipelineId, String check
         String path = getStorageParentDirectory() + jobId;
         List<String> fileNames = getFileNames(path);
         if (fileNames.isEmpty()) {
-            throw new CheckpointStorageException(
-                    "No checkpoint found for job, job id is: " + jobId);
+            log.info("No checkpoint found for job, job id is: " + jobId);

Review Comment:
   ```suggestion
               log.info("No checkpoint found for this job,  the job id is: " + 
jobId);
   ```



##########
seatunnel-engine/seatunnel-engine-storage/checkpoint-storage-plugins/checkpoint-storage-hdfs/src/main/java/org/apache/seatunnel/engine/checkpoint/storage/hdfs/HdfsStorage.java:
##########
@@ -174,7 +174,7 @@ public List<PipelineState> getLatestCheckpoint(String 
jobId) throws CheckpointSt
                 });
 
         if (latestPipelineStates.isEmpty()) {
-            throw new CheckpointStorageException("No checkpoint found for job, 
job id:{} " + jobId);
+            log.info("No checkpoint found for job, job id:{} " + jobId);

Review Comment:
   ```suggestion
               log.info("No checkpoint found for this job,  the job id:{} " + 
jobId);
   ```



##########
seatunnel-engine/seatunnel-engine-storage/checkpoint-storage-plugins/checkpoint-storage-hdfs/src/main/java/org/apache/seatunnel/engine/checkpoint/storage/hdfs/HdfsStorage.java:
##########
@@ -135,8 +135,8 @@ public List<PipelineState> getAllCheckpoints(String jobId) 
throws CheckpointStor
         String path = getStorageParentDirectory() + jobId;
         List<String> fileNames = getFileNames(path);
         if (fileNames.isEmpty()) {
-            throw new CheckpointStorageException(
-                    "No checkpoint found for job, job id is: " + jobId);
+            log.info("No checkpoint found for job, job id is: " + jobId);

Review Comment:
   ```suggestion
               log.info("No checkpoint found for this job, the job id is: " + 
jobId);
   ```



##########
seatunnel-engine/seatunnel-engine-storage/checkpoint-storage-plugins/checkpoint-storage-hdfs/src/main/java/org/apache/seatunnel/engine/checkpoint/storage/hdfs/HdfsStorage.java:
##########
@@ -159,8 +159,8 @@ public List<PipelineState> getLatestCheckpoint(String 
jobId) throws CheckpointSt
         String path = getStorageParentDirectory() + jobId;
         List<String> fileNames = getFileNames(path);
         if (fileNames.isEmpty()) {
-            throw new CheckpointStorageException(
-                    "No checkpoint found for job, job id is: " + jobId);
+            log.info("No checkpoint found for job, job id is: " + jobId);

Review Comment:
   ```suggestion
               log.info("No checkpoint found for this  job, the job id is: " + 
jobId);
   ```



##########
seatunnel-engine/seatunnel-engine-storage/checkpoint-storage-plugins/checkpoint-storage-hdfs/src/main/java/org/apache/seatunnel/engine/checkpoint/storage/hdfs/HdfsStorage.java:
##########
@@ -185,18 +185,19 @@ public PipelineState 
getLatestCheckpointByJobIdAndPipelineId(String jobId, Strin
         String path = getStorageParentDirectory() + jobId;
         List<String> fileNames = getFileNames(path);
         if (fileNames.isEmpty()) {
-            throw new CheckpointStorageException(
-                    "No checkpoint found for job, job id is: " + jobId);
+            log.info("No checkpoint found for job, job id is: " + jobId);
+            return null;
         }
 
         String latestFileName =
                 getLatestCheckpointFileNameByJobIdAndPipelineId(fileNames, 
pipelineId);
         if (latestFileName == null) {
-            throw new CheckpointStorageException(
+            log.info(
                     "No checkpoint found for job, job id is: "

Review Comment:
   ```suggestion
                       "No checkpoint found for this job, the job id is: "
   ```



##########
seatunnel-engine/seatunnel-engine-storage/checkpoint-storage-plugins/checkpoint-storage-hdfs/src/main/java/org/apache/seatunnel/engine/checkpoint/storage/hdfs/HdfsStorage.java:
##########
@@ -207,8 +208,8 @@ public List<PipelineState> 
getCheckpointsByJobIdAndPipelineId(String jobId, Stri
         String path = getStorageParentDirectory() + jobId;
         List<String> fileNames = getFileNames(path);
         if (fileNames.isEmpty()) {
-            throw new CheckpointStorageException(
-                    "No checkpoint found for job, job id is: " + jobId);
+            log.info("No checkpoint found for job, job id is: " + jobId);

Review Comment:
   ```suggestion
               log.info("No checkpoint found for this job, the job id is: " + 
jobId);
   ```



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