rkhachatryan commented on a change in pull request #15420:
URL: https://github.com/apache/flink/pull/15420#discussion_r647761028
##########
File path:
flink-runtime/src/main/java/org/apache/flink/runtime/state/changelog/StateChangelogHandleStreamImpl.java
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@@ -29,28 +30,45 @@
import org.apache.flink.util.CloseableIterator;
import org.apache.flink.util.ExceptionUtils;
+import org.slf4j.Logger;
+import org.slf4j.LoggerFactory;
+
import javax.annotation.Nullable;
import java.io.IOException;
import java.util.Iterator;
import java.util.List;
+import java.util.stream.Collectors;
/** {@link StateChangelogHandle} implementation based on {@link
StreamStateHandle}. */
@Internal
public final class StateChangelogHandleStreamImpl
Review comment:
`StateChangelogHandleStreamImpl` is using `StreamStateHandle` which can
be implemented not only using files (though we currently only have File and
ByteStream).
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