jackylau created FLINK-14243:
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Summary: flink hiveudf need some check whether it is using cache
Key: FLINK-14243
URL: https://issues.apache.org/jira/browse/FLINK-14243
Project: Flink
Issue Type: Bug
Components: Connectors / Hive
Affects Versions: 1.9.0
Reporter: jackylau
Fix For: 1.10.0
Flink1.9 bring in hive connector, but it will have some problem when the
original hive udf using cache. We konw that hive is processed level parallel
based on jvm, while flink/spark is task level parallel. If flink just calls the
hive udf, it wll exists thread-safe problem when using cache.
So it may need check the hive udf code and if it is not thread-fase, and set
the flink parallize=1
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