XenosK commented on code in PR #7840:
URL: https://github.com/apache/seatunnel/pull/7840#discussion_r1843262081
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seatunnel-connectors-v2/connector-cdc/connector-cdc-base/src/main/java/org/apache/seatunnel/connectors/cdc/base/source/enumerator/splitter/AbstractJdbcSourceChunkSplitter.java:
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@@ -379,12 +383,41 @@ protected SnapshotSplit createSnapshotSplit(
protected Column getSplitColumn(
JdbcConnection jdbc, JdbcDataSourceDialect dialect, TableId
tableId)
throws SQLException {
- Optional<PrimaryKey> primaryKey = dialect.getPrimaryKey(jdbc, tableId);
Column splitColumn = null;
+ Table table = dialect.queryTableSchema(jdbc, tableId).getTable();
+
+ // first , compare user defined split column is in the primary key or
unique key
+ Map<String, String> splitColumnsConfig = new HashMap<>();
+ try {
+ splitColumnsConfig = sourceConfig.getSplitColumn();
+ } catch (Exception e) {
+ log.error("Config snapshot.split.column get exception in {}:{}",
tableId, e);
+ }
+ String tableSc =
+ splitColumnsConfig.getOrDefault(tableId.catalog() + "." +
tableId.table(), null);
+
+ if (StringUtils.isNotEmpty(tableSc)) {
+ boolean isUniqueKey = dialect.isUniqueKey(jdbc, tableId, tableSc);
Review Comment:
> The above is pseudo code
>
> this method `getUniqueKeys ` return `List<ConstraintKey>`...
done @hailin0
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