Github user zentol commented on a diff in the pull request:
https://github.com/apache/flink/pull/2233#discussion_r70614465
--- Diff:
flink-streaming-java/src/main/java/org/apache/flink/streaming/api/functions/source/SocketTextStreamFunction.java
---
@@ -96,19 +96,21 @@ public void run(SourceContext<String> ctx) throws
Exception {
socket.connect(new InetSocketAddress(hostname,
port), CONNECTION_TIMEOUT_TIME);
BufferedReader reader = new BufferedReader(new
InputStreamReader(socket.getInputStream()));
- int data;
- while (isRunning && (data = reader.read()) !=
-1) {
- // check if the string is complete
- if (data != delimiter) {
- buffer.append((char) data);
- }
- else {
+ char[] cbuf = new char[8192];
+ int byteRead;
+ while (isRunning && (byteRead =
reader.read(cbuf)) != -1) {
+ buffer.append(cbuf, 0, byteRead);
+ int delimPos;
+ while (buffer.length() >=
delimiter.length() && (delimPos = buffer.indexOf(delimiter)) != -1) {
+ String token =
buffer.substring(0, delimPos);
// truncate trailing carriage
return
- if (delimiter == '\n' &&
buffer.length() > 0 && buffer.charAt(buffer.length() - 1) == '\r') {
-
buffer.setLength(buffer.length() - 1);
+ if (delimiter.equals("\n") &&
token.endsWith("\r")) {
+ token =
token.substring(0, token.length() - 1);
+ }
+ if (!token.isEmpty()) {
+ ctx.collect(token);
--- End diff --
This changes existing behavior. Empty strings are filtered out, which
wasn't done before.
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