[SPARK-10721] Log warning when file deletion fails

Author: tedyu <yuzhihong@gmail.com>

Closes #8843 from tedyu/master.

1 files changed, 6 insertions, 2 deletions

diff --git a/network/shuffle/src/main/java/org/apache/spark/network/shuffle/ExternalShuffleBlockResolver.java b/network/shuffle/src/main/java/org/apache/spark/network/shuffle/ExternalShuffleBlockResolver.java
index c5f93bb47f..0d4dd6afac 100644
--- a/network/shuffle/src/main/java/org/apache/spark/network/shuffle/ExternalShuffleBlockResolver.java
+++ b/network/shuffle/src/main/java/org/apache/spark/network/shuffle/ExternalShuffleBlockResolver.java
@@ -114,10 +114,14 @@ public class ExternalShuffleBlockResolver {
             "recover state for existing applications", registeredExecutorFile, e);
           if (registeredExecutorFile.isDirectory()) {
             for (File f : registeredExecutorFile.listFiles()) {
-              f.delete();
+              if (!f.delete()) {
+                logger.warn("error deleting {}", f.getPath());
+              }
             }
           }
-          registeredExecutorFile.delete();
+          if (!registeredExecutorFile.delete()) {
+            logger.warn("error deleting {}", registeredExecutorFile.getPath());
+          }
           options.createIfMissing(true);
           try {
             tmpDb = JniDBFactory.factory.open(registeredExecutorFile, options);