walterddr commented on a change in pull request #7665:
URL: https://github.com/apache/pinot/pull/7665#discussion_r740659789
##########
File path: pinot-tools/src/main/java/org/apache/pinot/tools/Command.java
##########
@@ -18,12 +18,21 @@
*/
package org.apache.pinot.tools;
+import java.util.concurrent.Callable;
+
+
/**
* Interface class for pinot-admin commands.
*
*
*/
-public interface Command {
+public interface Command extends Callable<Integer> {
+
+ default Integer call() throws Exception {
+ // run execute() and returns 0 if success otherwise return -1.
+ return execute() ? 0 : -1;
Review comment:
```suggestion
return execute() ? 0 : 1;
```
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