fhueske commented on a change in pull request #8030: [FLINK-11991] Set headers
to use for CSV output
URL: https://github.com/apache/flink/pull/8030#discussion_r276161491
##########
File path:
flink-java/src/main/java/org/apache/flink/api/java/io/CsvOutputFormat.java
##########
@@ -161,6 +173,29 @@ public void open(int taskNumber, int numTasks) throws
IOException {
super.open(taskNumber, numTasks);
this.wrt = this.charsetName == null ? new
OutputStreamWriter(new BufferedOutputStream(this.stream, 4096)) :
new OutputStreamWriter(new
BufferedOutputStream(this.stream, 4096), this.charsetName);
+ // print headers
+ if (this.headers != null) {
+ for (int i = 0; i < headers.length; i++) {
+ String v = headers[i];
+ if (v != null) {
+ if (i != 0) {
+
this.wrt.write(this.fieldDelimiter);
Review comment:
Construct the header row in a `StringBuilder` and print it all at once?
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