HyukjinKwon commented on code in PR #42986:
URL: https://github.com/apache/spark/pull/42986#discussion_r1329392064
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connector/connect/server/src/main/scala/org/apache/spark/sql/connect/planner/StreamingForeachBatchHelper.scala:
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@@ -125,8 +128,21 @@ object StreamingForeachBatchHelper extends Logging {
dataOut.writeLong(args.batchId)
dataOut.flush()
- val ret = dataIn.readInt()
- logInfo(s"Python foreach batch for dfId ${args.dfId} completed (ret:
$ret)")
+ try {
+ dataIn.readInt() match {
+ case ret if ret == 0 =>
+ logInfo(s"Python foreach batch for dfId ${args.dfId} completed
(ret: $ret)")
+ case SpecialLengths.PYTHON_EXCEPTION_THROWN =>
+ val exLength = dataIn.readInt()
+ val obj = new Array[Byte](exLength)
+ dataIn.readFully(obj)
+ val msg = new String(obj, StandardCharsets.UTF_8)
+ throw new IllegalStateException(s"Found error inside foreachBatch
Python process: $msg")
Review Comment:
Should it be `PythonException`? To match with
`PythonRunner.handlePythonException`. Or it'd be great to see if we can reuse
them.
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