HDDS-2132. TestKeyValueContainer is failing (#1457).

(cherry picked from commit e54977f888e1a855e9f88b9fa41e0c8794bd0881)

hadoop-hdds/container-service/src/main/java/org/apache/hadoop/ozone/container/keyvalue/helpers/KeyValueContainerUtil.java

@@ -198,8 +198,9 @@ public final class KeyValueContainerUtil {
       kvContainerData.setKeyCount(liveKeys.size());
       byte[] bcsId = metadata.getStore().get(DFSUtil.string2Bytes(
           OzoneConsts.BLOCK_COMMIT_SEQUENCE_ID_PREFIX));
-      Preconditions.checkNotNull(bcsId);
-      kvContainerData.updateBlockCommitSequenceId(Longs.fromByteArray(bcsId));
+      if (bcsId != null) {
+        kvContainerData.updateBlockCommitSequenceId(Longs.fromByteArray(bcsId));
+      }
     }
   }