huangdx0726 commented on code in PR #19455:
URL: https://github.com/apache/shardingsphere/pull/19455#discussion_r928180570
##########
shardingsphere-kernel/shardingsphere-data-pipeline/shardingsphere-data-pipeline-core/src/main/java/org/apache/shardingsphere/data/pipeline/scenario/rulealtered/RuleAlteredJobPreparer.java:
##########
@@ -142,10 +141,19 @@ private void prepareTarget(final RuleAlteredJobContext
jobContext) {
log.info("dataSourcePreparer null, ignore prepare target");
return;
}
+ DatabaseType sourceDatabaseType =
DatabaseTypeFactory.getInstance(jobConfig.getSourceDatabaseType());
+ DatabaseType targetDatabaseType =
DatabaseTypeFactory.getInstance(jobConfig.getTargetDatabaseType());
+ if (!sourceDatabaseType.isSchemaAvailable() ||
!targetDatabaseType.isSchemaAvailable()) {
+ log.info("prepareTargetSchemas, one of source or target database
type schema is not available, ignore");
+ return;
+ }
Review Comment:
Could you tell me the idea for the method？
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