Merge branch '11614-skip-extant-stream-files' into mod-run-migration

hedera-node/hedera-app/src/main/java/com/hedera/node/app/records/impl/producers/formats/v6/SignatureWriterV6.java

@@ -31,6 +31,7 @@
 import edu.umd.cs.findbugs.annotations.NonNull;
 import java.io.IOException;
 import java.io.UncheckedIOException;
+import java.nio.file.FileAlreadyExistsException;
 import java.nio.file.Files;
 import java.nio.file.Path;
 import java.nio.file.StandardOpenOption;
@@ -107,6 +108,10 @@ static void writeSignatureFile(
             logger.debug("signature file saved: {}", sigFilePath);
             // flush
             fileOut.flush();
+        } catch (final FileAlreadyExistsException ignore) {
+            // This is part of normal operations, as a reconnected node will very commonly
+            // re-create an existing record stream file while REPLAYING_EVENTS
+            logger.info("Skipping signature file for {} as it already exists", recordFilePath);
         } catch (final IOException e) {
             logger.error("Fail to generate signature file for {}", recordFilePath, e);
             throw new UncheckedIOException(e);