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Posted to commits@doris.apache.org by GitBox <gi...@apache.org> on 2021/09/01 09:12:17 UTC

[GitHub] [incubator-doris] caiconghui commented on a change in pull request #6416: #6386 Enforce null check at Catalog.getDb and Database.getTable

caiconghui commented on a change in pull request #6416:
URL: https://github.com/apache/incubator-doris/pull/6416#discussion_r699112144



##########
File path: fe/fe-core/src/main/java/org/apache/doris/alter/Alter.java
##########
@@ -260,17 +251,11 @@ private void processModifyColumnComment(Database db, OlapTable tbl, List<AlterCl
         }
     }
 
-    public void replayModifyComment(ModifyCommentOperationLog operation) {
+    public void replayModifyComment(ModifyCommentOperationLog operation) throws MetaNotFoundException {

Review comment:
       @ccoffline   how about check db or table state after getting db or table lock , so that the edit log will always keep in order? we don't need some much check code?

##########
File path: fe/fe-core/src/main/java/org/apache/doris/alter/Alter.java
##########
@@ -260,17 +251,11 @@ private void processModifyColumnComment(Database db, OlapTable tbl, List<AlterCl
         }
     }
 
-    public void replayModifyComment(ModifyCommentOperationLog operation) {
+    public void replayModifyComment(ModifyCommentOperationLog operation) throws MetaNotFoundException {

Review comment:
       @ccoffline  so we only need to simply check null for getdb and get table in replay operation and just simply skip the following operation? 

##########
File path: fe/fe-core/src/main/java/org/apache/doris/alter/Alter.java
##########
@@ -260,17 +251,11 @@ private void processModifyColumnComment(Database db, OlapTable tbl, List<AlterCl
         }
     }
 
-    public void replayModifyComment(ModifyCommentOperationLog operation) {
+    public void replayModifyComment(ModifyCommentOperationLog operation) throws MetaNotFoundException {

Review comment:
       @ccoffline  so we only need to simply check null for getdb and get table in replay operation and just simply skip the following operation?  now, the only way that fe may crash is with that replay operation?

##########
File path: fe/fe-core/src/main/java/org/apache/doris/alter/Alter.java
##########
@@ -260,17 +251,11 @@ private void processModifyColumnComment(Database db, OlapTable tbl, List<AlterCl
         }
     }
 
-    public void replayModifyComment(ModifyCommentOperationLog operation) {
+    public void replayModifyComment(ModifyCommentOperationLog operation) throws MetaNotFoundException {

Review comment:
       @ccoffline  so we only need to simply check null for getdb and get table in replay operation and just simply skip the following operation?  now, the only way that fe may crash is with that replay operation when fe restart?

##########
File path: fe/fe-core/src/main/java/org/apache/doris/alter/Alter.java
##########
@@ -260,17 +251,11 @@ private void processModifyColumnComment(Database db, OlapTable tbl, List<AlterCl
         }
     }
 
-    public void replayModifyComment(ModifyCommentOperationLog operation) {
+    public void replayModifyComment(ModifyCommentOperationLog operation) throws MetaNotFoundException {

Review comment:
       is it better to split this PR into two PRs ? one for code refactor and another for db and table null check, I think it is easy to review and  not-error-prone when PR is not so big? @ccoffline 




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