HBASE-28643 An unbounded backup failure message can cause an irrecove…

…rable state for the given backup (#6088)

Co-authored-by: Ray Mattingly <rmattingly@hubspot.com>
Signed-off-by: Nick Dimiduk <ndimiduk@apache.org>

hbase-backup/src/main/java/org/apache/hadoop/hbase/backup/BackupInfo.java

@@ -44,6 +44,7 @@
 @InterfaceAudience.Private
 public class BackupInfo implements Comparable<BackupInfo> {
   private static final Logger LOG = LoggerFactory.getLogger(BackupInfo.class);
+  private static final int MAX_FAILED_MESSAGE_LENGTH = 1024;
 
   public interface Filter {
     /**
@@ -266,6 +267,9 @@ public String getFailedMsg() {
   }
 
   public void setFailedMsg(String failedMsg) {
+    if (failedMsg.length() > MAX_FAILED_MESSAGE_LENGTH) {
+      failedMsg = failedMsg.substring(0, MAX_FAILED_MESSAGE_LENGTH);
+    }
     this.failedMsg = failedMsg;
   }