[core] fix

Author: LinMingQiang

paimon-common/src/main/java/org/apache/paimon/CoreOptions.java

@@ -2272,17 +2272,13 @@ public boolean writeOnly() {
     }
 
     public Set<WriteAction> writeActions() {
-        return options.getOptional(WRITE_ACTIONS)
-                .map(
-                        str ->
-                                Arrays.stream(str.split(","))
-                                        .map(
-                                                action ->
-                                                        WriteAction.valueOf(
-                                                                action.toUpperCase()
-                                                                        .replace('-', '_')))
-                                        .collect(Collectors.toCollection(HashSet::new)))
-                .orElseGet(() -> new HashSet<>(0));
+        String str = options.get(WRITE_ACTIONS);
+        if (StringUtils.isNullOrWhitespaceOnly(str)) {
+            return new HashSet<>(0);
+        }
+        return Arrays.stream(str.split(","))
+                .map(action -> WriteAction.valueOf(action.toUpperCase().replace('-', '_')))
+                .collect(Collectors.toCollection(HashSet::new));
     }
 
     public boolean doPartitionExpireAction(Set<WriteAction> doWriteActions) {
@@ -2321,7 +2317,7 @@ public boolean doCompact() {
     }
 
     public boolean doAllWriteActions(Set<WriteAction> doWriteActions) {
-        return doWriteActions.contains(WriteAction.ALL);
+        return doWriteActions.isEmpty() || doWriteActions.contains(WriteAction.ALL);
     }
 
     public boolean streamingReadOverwrite() {