Github user vanzin commented on a diff in the pull request:
https://github.com/apache/spark/pull/7839#discussion_r36353966
--- Diff:
network/shuffle/src/main/java/org/apache/spark/network/shuffle/ExternalShuffleBlockResolver.java
---
@@ -252,4 +273,19 @@ public String toString() {
.toString();
}
}
+
+ /**
+ * write out the set of registered executors to a file so we can reload
them on restart.
+ * You must have a lock on executors when calling this
+ */
+ private void saveRegisteredExecutors() throws IOException {
+ if (registeredExecutorFile != null) {
+ File tmp = new File(registeredExecutorFile.getAbsolutePath() +
".tmp");
+ ObjectOutputStream out = new ObjectOutputStream(new
FileOutputStream(tmp));
+ out.writeObject(executors);
+ out.close();
--- End diff --
This needs to be in a `finally` block.
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