virajjasani commented on code in PR #5675:
URL: https://github.com/apache/hadoop/pull/5675#discussion_r1212472590
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hadoop-common-project/hadoop-common/src/main/java/org/apache/hadoop/fs/impl/prefetch/SingleFilePerBlockCache.java:
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@@ -268,12 +310,15 @@ public void close() throws IOException {
int numFilesDeleted = 0;
for (Entry entry : blocks.values()) {
+ entry.takeLock(Entry.LockType.WRITE);
Review Comment:
> also, L303: should closed be atomic?
+1 to this suggestion, let me create a separate patch with HADOOP-18756 to
better track it.
> good: no race condition in close
> bad) the usual
sounds reasonable, let me try setting timeout
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