zhilinli123 commented on code in PR #7921:
URL: https://github.com/apache/seatunnel/pull/7921#discussion_r1820016570
##########
seatunnel-connectors-v2/connector-clickhouse/src/main/java/org/apache/seatunnel/connectors/seatunnel/clickhouse/source/ClickhouseSourceReader.java:
##########
@@ -75,28 +79,35 @@ public void close() throws IOException {
@Override
public void pollNext(Collector<SeaTunnelRow> output) throws Exception {
- if (!splits.isEmpty()) {
- try (ClickHouseResponse response =
this.request.query(sql).executeAndWait()) {
- response.stream()
- .forEach(
- record -> {
- Object[] values =
- new
Object[this.rowTypeInfo.getFieldNames().length];
- for (int i = 0; i < record.size(); i++) {
- if
(record.getValue(i).isNullOrEmpty()) {
- values[i] = null;
- } else {
- values[i] =
-
TypeConvertUtil.valueUnwrap(
-
this.rowTypeInfo.getFieldType(i),
-
record.getValue(i));
+ synchronized (output.getCheckpointLock()) {
+ if (!splits.isEmpty()) {
+ try (ClickHouseResponse response =
this.request.query(sql).executeAndWait()) {
+ response.stream()
+ .forEach(
+ record -> {
+ Object[] values =
+ new
Object[this.rowTypeInfo.getFieldNames().length];
+ for (int i = 0; i < record.size();
i++) {
+ if
(record.getValue(i).isNullOrEmpty()) {
+ values[i] = null;
+ } else {
+ values[i] =
+
TypeConvertUtil.valueUnwrap(
+
this.rowTypeInfo.getFieldType(i),
+
record.getValue(i));
+ }
}
- }
- output.collect(new SeaTunnelRow(values));
- });
+ output.collect(new
SeaTunnelRow(values));
+ });
+ }
+ this.readerContext.signalNoMoreElement();
+ this.splits.clear();
+ }
Review Comment:
Extract clickhouse Close the task method
```
this.readerContext.signalNoMoreElement();
this.splits.clear();
```
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