HyukjinKwon commented on a change in pull request #33934:
URL: https://github.com/apache/spark/pull/33934#discussion_r704875880
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File path: core/src/main/scala/org/apache/spark/deploy/PythonRunner.scala
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@@ -92,15 +92,19 @@ object PythonRunner {
// see https://github.com/numpy/numpy/issues/10455
sparkConf.getOption("spark.driver.cores").foreach(env.put("OMP_NUM_THREADS", _))
}
- builder.redirectErrorStream(true) // Ugly but needed for stdout and stderr
to synchronize
try {
val process = builder.start()
+ val stderrBuffer = new CircularBuffer(2048)
+ new RedirectThread(
+ process.getErrorStream,
+ stderrBuffer,
+ "Thread-ScriptTransformation-STDERR-Consumer").start()
new RedirectThread(process.getInputStream, System.out, "redirect
output").start()
Review comment:
Is there any easy way to get the stderr stream, and manually merge
stderr and stdout to printout? I think we shouldn't remove this from stdout.
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