race condition

hms-dbmi · Dec 21, 2023 · 0d23a6e · 0d23a6e
1 parent c4a248d
commit 0d23a6e
Showing 1 changed file with 4 additions and 2 deletions.
diff --git a/...c/main/java/edu/harvard/hms/dbmi/avillach/hpds/service/filesharing/FileSystemService.java b/...c/main/java/edu/harvard/hms/dbmi/avillach/hpds/service/filesharing/FileSystemService.java
@@ -45,8 +45,10 @@ private boolean writeStreamToFile(String fileName, InputStream content, String q
 
         try {
             LOG.info("Writing query {} to file: {}", queryId, filePath);
-            if (!Files.exists(dirPath)) {
-                Files.createDirectory(dirPath);
+            synchronized (dirPath) {
+                if (!Files.exists(dirPath)) {
+                    Files.createDirectory(dirPath);
+                }
             }
             return Files.copy(content, filePath) > 0;
         } catch (IOException e) {