zjffdu commented on a change in pull request #3696: [ZEPPELIN-4692]. zeppelin
pyspark doesn't print java output
URL: https://github.com/apache/zeppelin/pull/3696#discussion_r399064011
##########
File path:
spark/interpreter/src/main/java/org/apache/zeppelin/spark/PySparkInterpreter.java
##########
@@ -125,8 +127,18 @@ protected ZeppelinContext createZeppelinContext() {
@Override
public InterpreterResult interpret(String st, InterpreterContext context)
throws InterpreterException {
- Utils.printDeprecateMessage(sparkInterpreter.getSparkVersion(), context,
properties);
- return super.interpret(st, context);
+ // redirect java stdout/stdout to interpreter output. Because pyspark may
call java code.
+ PrintStream originalStdout = System.out;
+ PrintStream originalStderr = System.err;
+ try {
+ System.setOut(new PrintStream(context.out));
+ System.setErr(new PrintStream(context.out));
+ Utils.printDeprecateMessage(sparkInterpreter.getSparkVersion(), context,
properties);
+ return super.interpret(st, context);
Review comment:
They are here
https://github.com/apache/zeppelin/blob/master/spark/interpreter/src/main/java/org/apache/zeppelin/spark/PySparkInterpreter.java#L133
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