[
https://issues.apache.org/jira/browse/FLINK-14243?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16968168#comment-16968168
]
jackylau commented on FLINK-14243:
----------------------------------
[~lzljs3620320] [~jark] yep, i read this HIVE-16196 and related issue . And it
is hive bug, and my hive is hive-1.1.0-cdh5.7.0-src which is affected from the
issue. thanks!
> flink hiveudf needs some check when it is using cache
> -----------------------------------------------------
>
> Key: FLINK-14243
> URL: https://issues.apache.org/jira/browse/FLINK-14243
> Project: Flink
> Issue Type: Bug
> Components: Connectors / Hive, Table SQL / Planner
> Affects Versions: 1.9.0
> Reporter: jackylau
> Priority: Major
> Fix For: 1.10.0
>
> Attachments: Snipaste_2019-10-30_15-34-09.png
>
>
> Flink1.9 brings 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-safe, and set
> the flink parallize=1
--
This message was sent by Atlassian Jira
(v8.3.4#803005)
