diff --git a/src/main/java/com/kamco/cd/training/train/service/JobRecoveryOnStartupService.java b/src/main/java/com/kamco/cd/training/train/service/JobRecoveryOnStartupService.java
index f2510e5..61644d1 100644
--- a/src/main/java/com/kamco/cd/training/train/service/JobRecoveryOnStartupService.java
+++ b/src/main/java/com/kamco/cd/training/train/service/JobRecoveryOnStartupService.java
@@ -349,33 +349,66 @@ public class JobRecoveryOnStartupService {
    */
   private OutputResult probeOutputs(ModelTrainJobDto job) {
     try {
+
+      log.info(
+          "[RECOVERY] probeOutputs start. jobId={}, modelId={}", job.getId(), job.getModelId());
+
+      // 1) 출력 디렉토리 확인
       Path outDir = resolveOutputDir(job);
       if (outDir == null || !Files.isDirectory(outDir)) {
+        log.warn("[RECOVERY] output directory missing. jobId={}, path={}", job.getId(), outDir);
         return new OutputResult(false, "output-dir-missing");
       }
 
+      log.info("[RECOVERY] output directory found. jobId={}, path={}", job.getId(), outDir);
+
+      // 2) totalEpoch 확인
       Integer totalEpoch = extractTotalEpoch(job).orElse(null);
       if (totalEpoch == null || totalEpoch <= 0) {
+        log.warn(
+            "[RECOVERY] totalEpoch missing or invalid. jobId={}, totalEpoch={}",
+            job.getId(),
+            totalEpoch);
         return new OutputResult(false, "total-epoch-missing");
       }
 
+      log.info("[RECOVERY] totalEpoch={}. jobId={}", totalEpoch, job.getId());
+
+      // 3) val.csv 존재 확인
       Path valCsv = outDir.resolve("val.csv");
       if (!Files.exists(valCsv)) {
+        log.warn("[RECOVERY] val.csv missing. jobId={}, path={}", job.getId(), valCsv);
         return new OutputResult(false, "val.csv-missing");
       }
 
+      // 4) val.csv 라인 수 확인
       long lines = countNonHeaderLines(valCsv);
 
-      // “같아야 완료” 정책
+      log.info(
+          "[RECOVERY] val.csv lines counted. jobId={}, lines={}, expected={}",
+          job.getId(),
+          lines,
+          totalEpoch);
+
+      // 5) 완료 판정
       if (lines == totalEpoch) {
+        log.info("[RECOVERY] outputs look COMPLETE. jobId={}", job.getId());
         return new OutputResult(true, "ok");
       }
 
+      log.warn(
+          "[RECOVERY] val.csv line mismatch. jobId={}, lines={}, expected={}",
+          job.getId(),
+          lines,
+          totalEpoch);
+
       return new OutputResult(
           false, "val.csv-lines-mismatch lines=" + lines + " expected=" + totalEpoch);
 
     } catch (Exception e) {
+
       log.error("[RECOVERY] probeOutputs error. jobId={}", job.getId(), e);
+
       return new OutputResult(false, "probe-error");
     }
   }