[ISSUE #10038] Fix checkCommitLogOffsetOnRecover to skip validation for BLANK_MAGIC_CODE messages (#10039)

Change-Id: If1913db5155fe4135f2dbd1b58417b3afc6748c1

Co-authored-by: guyinyou <[email protected]>

Author: guyinyou

store/src/main/java/org/apache/rocketmq/store/CommitLog.java

@@ -795,7 +795,7 @@ public void recoverAbnormally(long maxPhyOffsetOfConsumeQueue) throws RocksDBExc
                 int size = dispatchRequest.getMsgSize();
                 if (dispatchRequest.isSuccess()) {
                     // Check commitlog offset validity if enabled
-                    if (checkCommitLogOffsetOnRecover) {
+                    if (size > 0 && checkCommitLogOffsetOnRecover) {
                         if (dispatchRequest.getCommitLogOffset() < mappedFile.getFileFromOffset()
                             || dispatchRequest.getCommitLogOffset() > mappedFile.getFileFromOffset() + mappedFile.getFileSize()) {
                             log.warn("found illegal commitlog offset {} in {}, current pos={}, it will be truncated.",