Just add a comment to show that the code is related to #597
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@ -253,6 +253,9 @@ final class NioEventLoop extends SingleThreadEventLoop {
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private void processSelectedKeys() {
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private void processSelectedKeys() {
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Set<SelectionKey> selectedKeys = selector.selectedKeys();
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Set<SelectionKey> selectedKeys = selector.selectedKeys();
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// check if the set is empty and if so just return to not create garbage by
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// creating a new Iterator every time even if there is nothing to process.
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// See https://github.com/netty/netty/issues/597
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if (selectedKeys.isEmpty()) {
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if (selectedKeys.isEmpty()) {
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return;
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return;
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}
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}
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