EMsnap commented on code in PR #7750:
URL: https://github.com/apache/inlong/pull/7750#discussion_r1173380929
##########
inlong-sort/sort-connectors/mysql-cdc/src/main/java/org/apache/inlong/sort/cdc/mysql/source/reader/MySqlRecordEmitter.java:
##########
@@ -219,12 +239,73 @@ private boolean shouldOutputRenameDdl(SourceRecord
element, TableId tableId) {
}
}
}
- } catch (Exception e) {
- LOG.error("parse ddl error {}", element, e);
+ } catch (JSQLParserException e) {
+ LOG.error("parse ddl error {}", historyRecord, e);
}
return false;
}
+ /**
+ * after setting `gh-ost.ddl.change=true`, the alter ddl statements
generated by gh-ost
+ * will be captured and stored in the state.
+ */
+ private void collectGhostDdl(SourceRecord element, MySqlSplitState
splitState, HistoryRecord historyRecord) {
+ String ddl = historyRecord.document().getString(Fields.DDL_STATEMENTS);
+ if (StringUtils.isBlank(ddl)) {
+ return;
+ }
+ String tableName =
org.apache.inlong.sort.cdc.mysql.source.utils.RecordUtils.getTableName(element);
+ Pattern compile = Pattern.compile(this.ghostTableRegex);
+ Matcher matcher = compile.matcher(tableName);
+ if (matcher.find()) {
+ tableName = matcher.group(1);
+ String dbName =
org.apache.inlong.sort.cdc.mysql.source.utils.RecordUtils.getDbName(element);
+ TableId tableId =
org.apache.inlong.sort.cdc.mysql.source.utils.RecordUtils.getTableId(
+ dbName,
+ tableName);
+ MySqlBinlogSplitState mySqlBinlogSplitState =
splitState.asBinlogSplitState();
+ if (ddl.toUpperCase().startsWith(DDL_OP_ALTER)
+ &&
mySqlBinlogSplitState.getTableSchemas().containsKey(tableId)) {
+ String matchTableInSqlRegex = ghostTableRegex;
+ if (matchTableInSqlRegex.startsWith(CARET) &&
matchTableInSqlRegex.endsWith(DOLLAR)) {
+ matchTableInSqlRegex = matchTableInSqlRegex.substring(1,
matchTableInSqlRegex.length() - 1);
+ }
+ mySqlBinlogSplitState.recordTableDdl(
Review Comment:
I guess overwrite means the data is lost then ?
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