kamalcph commented on code in PR #14176:
URL: https://github.com/apache/kafka/pull/14176#discussion_r1289553687


##########
storage/src/main/java/org/apache/kafka/storage/internals/log/LogConfig.java:
##########
@@ -459,49 +463,53 @@ public static void validateValues(Map<?, ?> props) {
         long maxCompactionLag = (Long) 
props.get(TopicConfig.MAX_COMPACTION_LAG_MS_CONFIG);
         if (minCompactionLag > maxCompactionLag) {
             throw new InvalidConfigurationException("conflict topic config 
setting "
-                + TopicConfig.MIN_COMPACTION_LAG_MS_CONFIG + " (" + 
minCompactionLag + ") > "
-                + TopicConfig.MAX_COMPACTION_LAG_MS_CONFIG + " (" + 
maxCompactionLag + ")");
+                    + TopicConfig.MIN_COMPACTION_LAG_MS_CONFIG + " (" + 
minCompactionLag + ") > "
+                    + TopicConfig.MAX_COMPACTION_LAG_MS_CONFIG + " (" + 
maxCompactionLag + ")");
         }
+    }
 
-        if (props.containsKey(TopicConfig.REMOTE_LOG_STORAGE_ENABLE_CONFIG)) {
-            boolean isRemoteStorageEnabled = (Boolean) 
props.get(TopicConfig.REMOTE_LOG_STORAGE_ENABLE_CONFIG);
-            String cleanupPolicy = 
props.get(TopicConfig.CLEANUP_POLICY_CONFIG).toString().toLowerCase(Locale.getDefault());
-            if (isRemoteStorageEnabled && 
cleanupPolicy.contains(TopicConfig.CLEANUP_POLICY_COMPACT)) {
-                throw new ConfigException("Remote log storage is unsupported 
for the compacted topics");
-            }
+    public static void validateValuesInBroker(Map<?, ?> props) {
+        validateValues(props);
+        Boolean isRemoteLogStorageSystemEnabled =
+                (Boolean) 
props.get(RemoteLogManagerConfig.REMOTE_LOG_STORAGE_SYSTEM_ENABLE_PROP);
+        Boolean isRemoteStorageEnabled = (Boolean) 
props.get(TopicConfig.REMOTE_LOG_STORAGE_ENABLE_CONFIG);

Review Comment:
   It takes the default value of `false`.



##########
storage/src/main/java/org/apache/kafka/storage/internals/log/LogConfig.java:
##########
@@ -459,49 +463,53 @@ public static void validateValues(Map<?, ?> props) {
         long maxCompactionLag = (Long) 
props.get(TopicConfig.MAX_COMPACTION_LAG_MS_CONFIG);
         if (minCompactionLag > maxCompactionLag) {
             throw new InvalidConfigurationException("conflict topic config 
setting "
-                + TopicConfig.MIN_COMPACTION_LAG_MS_CONFIG + " (" + 
minCompactionLag + ") > "
-                + TopicConfig.MAX_COMPACTION_LAG_MS_CONFIG + " (" + 
maxCompactionLag + ")");
+                    + TopicConfig.MIN_COMPACTION_LAG_MS_CONFIG + " (" + 
minCompactionLag + ") > "
+                    + TopicConfig.MAX_COMPACTION_LAG_MS_CONFIG + " (" + 
maxCompactionLag + ")");
         }
+    }
 
-        if (props.containsKey(TopicConfig.REMOTE_LOG_STORAGE_ENABLE_CONFIG)) {
-            boolean isRemoteStorageEnabled = (Boolean) 
props.get(TopicConfig.REMOTE_LOG_STORAGE_ENABLE_CONFIG);
-            String cleanupPolicy = 
props.get(TopicConfig.CLEANUP_POLICY_CONFIG).toString().toLowerCase(Locale.getDefault());
-            if (isRemoteStorageEnabled && 
cleanupPolicy.contains(TopicConfig.CLEANUP_POLICY_COMPACT)) {
-                throw new ConfigException("Remote log storage is unsupported 
for the compacted topics");
-            }
+    public static void validateValuesInBroker(Map<?, ?> props) {
+        validateValues(props);
+        Boolean isRemoteLogStorageSystemEnabled =
+                (Boolean) 
props.get(RemoteLogManagerConfig.REMOTE_LOG_STORAGE_SYSTEM_ENABLE_PROP);
+        Boolean isRemoteStorageEnabled = (Boolean) 
props.get(TopicConfig.REMOTE_LOG_STORAGE_ENABLE_CONFIG);
+        if (!isRemoteLogStorageSystemEnabled && isRemoteStorageEnabled) {
+            throw new ConfigException("Tiered Storage functionality is 
disabled in the broker. " +
+                    "Topic cannot be configured with remote log storage.");
         }
 
-        if (props.containsKey(TopicConfig.LOCAL_LOG_RETENTION_BYTES_CONFIG)) {
-            Long retentionBytes = (Long) 
props.get(TopicConfig.RETENTION_BYTES_CONFIG);
-            Long localLogRetentionBytes = (Long) 
props.get(TopicConfig.LOCAL_LOG_RETENTION_BYTES_CONFIG);
-            if (retentionBytes > -1 && localLogRetentionBytes != -2) {
-                if (localLogRetentionBytes == -1) {
-                    String message = String.format("Value must not be -1 as %s 
value is set as %d.",
-                            TopicConfig.RETENTION_BYTES_CONFIG, 
retentionBytes);
-                    throw new 
ConfigException(TopicConfig.LOCAL_LOG_RETENTION_BYTES_CONFIG, 
localLogRetentionBytes, message);
-                }
-                if (localLogRetentionBytes > retentionBytes) {
-                    String message = String.format("Value must not be more 
than %s property value: %d",
-                            TopicConfig.RETENTION_BYTES_CONFIG, 
retentionBytes);
-                    throw new 
ConfigException(TopicConfig.LOCAL_LOG_RETENTION_BYTES_CONFIG, 
localLogRetentionBytes, message);
-                }
+        String cleanupPolicy = 
props.get(TopicConfig.CLEANUP_POLICY_CONFIG).toString().toLowerCase(Locale.getDefault());
+        if (isRemoteStorageEnabled && 
cleanupPolicy.contains(TopicConfig.CLEANUP_POLICY_COMPACT)) {
+            throw new ConfigException("Remote log storage is unsupported for 
the compacted topics");
+        }
+
+        Long retentionBytes = (Long) 
props.get(TopicConfig.RETENTION_BYTES_CONFIG);
+        Long localLogRetentionBytes = (Long) 
props.get(TopicConfig.LOCAL_LOG_RETENTION_BYTES_CONFIG);
+        if (isRemoteStorageEnabled && retentionBytes > -1 && 
localLogRetentionBytes != -2) {
+            if (localLogRetentionBytes == -1) {
+                String message = String.format("Value must not be -1 as %s 
value is set as %d.",
+                        TopicConfig.RETENTION_BYTES_CONFIG, retentionBytes);
+                throw new 
ConfigException(TopicConfig.LOCAL_LOG_RETENTION_BYTES_CONFIG, 
localLogRetentionBytes, message);
+            }
+            if (localLogRetentionBytes > retentionBytes) {
+                String message = String.format("Value must not be more than %s 
property value: %d",
+                        TopicConfig.RETENTION_BYTES_CONFIG, retentionBytes);
+                throw new 
ConfigException(TopicConfig.LOCAL_LOG_RETENTION_BYTES_CONFIG, 
localLogRetentionBytes, message);
             }

Review Comment:
   Client don't know the value configured in the broker for 
`log.local.retention.ms`, `log.retention.ms`, `log.local.retention.bytes` and 
`log.retention.bytes`. It takes the default value from LogConfig when doing 
`CONFIG.parse(props)` so doing this validation on the client side might be 
incorrect. 
   
   We can move the validation for `compact` topic to client-side but it will 
also by-pass when using incrementalAlterConfigs API so kept all the validations 
in the broker side. 



##########
server-common/src/main/java/org/apache/kafka/server/config/ServerTopicConfigSynonyms.java:
##########
@@ -85,7 +85,8 @@ public final class ServerTopicConfigSynonyms {
         
sameNameWithLogPrefix(TopicConfig.MESSAGE_TIMESTAMP_DIFFERENCE_MAX_MS_CONFIG),
         
sameNameWithLogPrefix(TopicConfig.MESSAGE_DOWNCONVERSION_ENABLE_CONFIG),
         sameNameWithLogPrefix(TopicConfig.LOCAL_LOG_RETENTION_MS_CONFIG),
-        sameNameWithLogPrefix(TopicConfig.LOCAL_LOG_RETENTION_BYTES_CONFIG)
+        sameNameWithLogPrefix(TopicConfig.LOCAL_LOG_RETENTION_BYTES_CONFIG),
+        sameName("remote.log.storage.system.enable")

Review Comment:
   Using the constant from RemoteLogMangerConfig requires adding `storage` 
module as dependency for `server-common` module which brings circular 
dependency.
   
   Reusing the constant can be done in the next PR. 



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