Add a FileNotFoundException check to allow breaking out of the loop after shutdown.

Change-Id: I53a7d2800775d80c1db8feb159c5c258b3517f09

Author: RongtongJin

tieredstore/src/main/java/org/apache/rocketmq/tieredstore/index/IndexStoreFile.java

@@ -477,7 +477,7 @@ public void shutdown() {
                 this.compactMappedFile.shutdown(TimeUnit.SECONDS.toMillis(10));
                 this.compactMappedFile.cleanResources();
             }
-        } catch (Exception e) {
+        } catch (Throwable e) {
             log.error("IndexStoreFile shutdown failed, timestamp: {}, status: {}", this.getTimestamp(), fileStatus.get(), e);
         } finally {
             fileReadWriteLock.writeLock().unlock();

tieredstore/src/main/java/org/apache/rocketmq/tieredstore/index/IndexStoreService.java

@@ -438,13 +438,14 @@ public void run() {
             if (autoCreateNewFile) {
                 this.forceUpload();
             }
-            this.timeStoreTable.forEach((timestamp, file) -> file.shutdown());
-            this.timeStoreTable.clear();
         } catch (Exception e) {
             log.error("IndexStoreService shutdown error", e);
         } finally {
+            this.timeStoreTable.forEach((timestamp, file) -> file.shutdown());
+            this.timeStoreTable.clear();
             readWriteLock.writeLock().unlock();
         }
+
         log.info(this.getServiceName() + " service shutdown");
     }
 }