kangpinghuang commented on a change in pull request #516: Modify compaction 
code to be adapted to Rowset interface
URL: https://github.com/apache/incubator-doris/pull/516#discussion_r246647352
 
 

 ##########
 File path: be/src/olap/schema_change.cpp
 ##########
 @@ -1523,22 +1523,21 @@ OLAPStatus SchemaChangeHandler::_do_alter_tablet(
         }
 
         // acquire data sources correspond to history versions
-        ref_tablet->acquire_data_sources_by_versions(
-                versions_to_be_changed, &olap_data_arr);
-        if (olap_data_arr.size() < 1) {
+        ref_tablet->capture_rs_readers(versions_to_be_changed, &rs_readers);
+        if (rs_readers.size() < 1) {
             OLAP_LOG_WARNING("fail to acquire all data sources."
                              "[version_num=%d data_source_num=%d]",
                              versions_to_be_changed.size(),
-                             olap_data_arr.size());
+                             rs_readers.size());
 
 Review comment:
   change OLAP_LOG_WARNING -> LOG(WARNING)

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