LuciferYang commented on code in PR #49531:
URL: https://github.com/apache/spark/pull/49531#discussion_r1924639668
##########
core/src/test/scala/org/apache/spark/network/netty/NettyBlockTransferServiceSuite.scala:
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@@ -130,6 +132,62 @@ class NettyBlockTransferServiceSuite
assert(hitExecutorDeadException)
}
+ test("SPARK-50853 - example of simple download file writable channel not
being closed") {
Review Comment:
Personally, I think this test case is a bit heavy. According to the pr
description, perhaps the new case just needs to ensure that after calling the
`closeAndRead()` method on `SimpleDownloadWritableChannel`, the `isOpen()`
status should return false (Before this PR, this assertion would fail.).
For example, maybe we could add a very simple case in the network-shuffle
module:
```java
@Test
public void testIsOpenAfterCallCloseAndRead() throws IOException {
File tempFile = File.createTempFile("test", ".tmp");
tempFile.deleteOnExit();
Map<String, String> confMap = new HashMap<>();
// Perhaps some additional configuration options need to be put into
the confMap.
TransportConf shuffle = new TransportConf("shuffle", new
MapConfigProvider(confMap));
DownloadFile downloadFile = null;
try {
downloadFile = new SimpleDownloadFile(tempFile, shuffle);
DownloadFileWritableChannel channel =
downloadFile.openForWriting();
// ...
// ... Perhaps some other operations are needed.
channel.closeAndRead();
Assertions.assertFalse(channel.isOpen(), "Channel should be
closed after closeAndRead.");
// ... Perhaps some additional assertions need to be added.
} finally {
if (downloadFile != null) {
downloadFile.delete();
}
}
}
```
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