Yakov Goldberg created FLINK-4805:
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Summary: Stringify() crashes with Python3 (run with pyflink3)
Key: FLINK-4805
URL:
https://issues.apache.org/jira/browse/FLINK-4805 Project: Flink
Issue Type: Bug
Reporter: Yakov Goldberg
{code}
Caused by: java.lang.RuntimeException: External process for task MapPartition (PythonMap) terminated prematurely due to an error.
Traceback (most recent call last):
File "/tmp/flink-dist-cache-299804c6-813a-44de-9f62-c5f4cf415990/1527bd1cc45d6f67695c180762c614ef/flink/plan.py", line 548, in <module>
env.execute(local=True)
File "/tmp/flink-dist-cache-299804c6-813a-44de-9f62-c5f4cf415990/1527bd1cc45d6f67695c180762c614ef/flink/flink/plan/Environment.py", line 181, in execute
operator._go()
File "/tmp/flink-dist-cache-299804c6-813a-44de-9f62-c5f4cf415990/1527bd1cc45d6f67695c180762c614ef/flink/flink/functions/Function.py", line 64, in _go
self._run()
File "/tmp/flink-dist-cache-299804c6-813a-44de-9f62-c5f4cf415990/1527bd1cc45d6f67695c180762c614ef/flink/flink/functions/MapFunction.py", line 29, in _run
collector.collect(function(value))
File "/tmp/flink-dist-cache-299804c6-813a-44de-9f62-c5f4cf415990/1527bd1cc45d6f67695c180762c614ef/flink/flink/plan/DataSet.py", line 38, in map
return "(" + b", ".join([self.map(x) for x in value]) + ")"
File "/tmp/flink-dist-cache-299804c6-813a-44de-9f62-c5f4cf415990/1527bd1cc45d6f67695c180762c614ef/flink/flink/plan/DataSet.py", line 38, in <listcomp>
return "(" + b", ".join([self.map(x) for x in value]) + ")"
File "/tmp/flink-dist-cache-299804c6-813a-44de-9f62-c5f4cf415990/1527bd1cc45d6f67695c180762c614ef/flink/flink/plan/DataSet.py", line 38, in map
return "(" + b", ".join([self.map(x) for x in value]) + ")"
TypeError: sequence item 0: expected bytes, bytearray, or an object with the buffer interface, str found
at org.apache.flink.python.api.streaming.data.PythonStreamer.streamBufferWithoutGroups(PythonStreamer.java:268)
at org.apache.flink.python.api.functions.PythonMapPartition.mapPartition(PythonMapPartition.java:54)
at org.apache.flink.runtime.operators.MapPartitionDriver.run(MapPartitionDriver.java:98)
at org.apache.flink.runtime.operators.BatchTask.run(BatchTask.java:480)
at org.apache.flink.runtime.operators.BatchTask.invoke(BatchTask.java:345)
at org.apache.flink.runtime.taskmanager.Task.run(Task.java:559)
at java.lang.Thread.run(Thread.java:745)
{code}
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